J.W. DONCHIN CO. 4841-43 W. Chicago Ave. • Chicago, IL 60651-3224 Ph: 773-261-2182 • Fax: 773-261-2867 •
[email protected] • www.jwdonchin,com
REFERENCE TABLES Contents Page 647 648 649 650 651 652 653 654
655 656 657 658
659 660 661
662
663 664
Description Range REFERENCE TABLES Metric and English Equivalents Inch to Millimeter Conversion Table Millimeter to Inch Conversion Table Decimal Equivalents of 8ths, 16ths, 32nds, 64ths Decimal Equivalents of Number Size Drills American Standard Pipe Thread and Tap Drill Sizes American National and Unified Coarse and Fine Thread Dimensions and Tap Drill Sizes American National and Unified Coarse and Fine Thread Dimensions and Tap Drill Sizes (continued) Millimeter Tap Drill Sizes Tap Drill Sizes For Fractional Size Threads Approximately 65% Depth Thread / AMERICAN NATIONAL THREAD FORM Double Depth of Screw Threads ISO External Threads Medium Fit American Standard Acme Screw Thread Dimensions Tapers and Angles General Guide for Cutting Speeds and Feeds for Drills Guide for Drill Feeds Guide for Peripheral Speeds Pitch Diameter Tables – American National Thread Form For Nos. 575 and 585 Screw Thread Micrometers Pitch Diameter Tables For Nos. 575 and 585 Screw Thread Micrometers Pitch Diameter Table For Nos. 575 and 585 Screw Thread Micrometers “V” Standard Thread Form American Standard Acme Screw Thread Dimensions Temperature Conversion High Temperatures Judged by Color and Colors for Tempering Rules Relative to the Circle Standards for Sheet and Wire Gages with corresponding Starrett Gages Dimensions of Sizes in Decimal Parts of an Inch Triangle Chart For the Rapid Solution of Right-Angle and Oblique-Angle Triangles
ⴞ关 .001 兴 REFERENCE TABLES
⫹
⭿
⯝ ⱡ FPM ⳝ mm ⱢInch Ⱕ ⱔ⬏⬐⬍⬎ ⱡ ⴚ ⴛⴜⴝ a
b
REFERENCE TABLES Metric and English Equivalents Linear Measure Metric to Inch
Inch to Metric
1 millimeter = 0.03937 inch 1 centimeter = 0.3937 inch 39.37 inches 1 meter = 3.2808 feet 1.0936 yards 1 kilometer = 0.6214 mile
1 inch =
{
1 foot =
millimeters { 25.4 2.54 centimeters
millimeters { 304.8 0.3048 meter
1 yard = 0.9144 meter 1 mile = 1.609 kilometers
Square Measure Metric to Inch 1 square millimeter = 0.00155 square inch 1 square centimeter = 0.155 square inch 1 square meter = 10.764 square feet = 1.196 square yards 1 are = 0.0247 acre = 1076.4 square feet 1 hectare = 2.471 acres = 107,639 square feet 1 square kilometer = 0.3861 square mile = 247.1 acres
Inch to Metric 1 square inch = 6.452 square centimeters = 645.2 square millimeters 1 square foot = 0.0929 square meter = 929 square centimeters 1 square yard = 0.836 square meter 1 acre = 0.4047 hectare = 40.47 ares 1 square mile = 2.5900 square kilometers
Cubic Measure Metric to English 1 liter = 0.2642 U.S. gallon = 1.0567 U.S. quarts 1 liter (cubic decimeter) = 0.0353 cubic foot = 61.024 cubic inches 1 cubic centimeter = 0.061 cubic inch 1 cubic meter = 264.2 U.S. gallons 1 cubic meter = 35.315 cubic feet = 1.308 cubic yards
English to Metric 1 U.S. quart = 0.946 liter 1 U.S. gallon = 3.785 liters = 231 cubic inches 1 cubic inch = 16.38706 cubic centimeters 1 cubic foot = 0.02832 cubic meter = 28.317 liters 1 cubic yard = 0.7646 cubic meter
Weight Metric to English 1 gram = 15.432 grains 1 gram = 0.03527 ounce avoirdupois (Commercial) 1 kilogram = 2.2046 pounds = 35.274 ounces avoirdupois (Commercial) 1 metric ton = 0.9842 ton (of 2240 pounds) = 2204.6 pounds
648
English to Metric 1 grain = 0.0648 gram 1 ounce avoirdupois (Commercial) = 28.35 grams 1 pound = 0.4536 kilogram = 453.6 grams 1 short ton (2,000 pounds) = .907 metric ton = 907 kilograms 1 long ton (2,240 pounds) = 1.016 metric ton = 1016 kilograms
REFERENCE TABLES Inch to Millimeter Conversion Table Decimals to Millimeters
Fractions to Decimals to Millimeters
Decimal
mm
Decimal
mm
Fraction
Decimal
mm
Fraction
Decimal
mm
0.001 0.002 0.003 0.004 0.005 0.006 0.007 0.008 0.009
0.0254 0.0508 0.0762 0.1016 0.1270 0.1524 0.1778 0.2032 0.2286
0.0156 0.0312 0.0469
0.3969 0.7938 1.1906
33/64 17/32 35/64
0.5156 0.5312 0.5469
13.0969 13.4938 13.8906
1/16
0.0625
1.5875
9/16
0.5625
14.2875
0.2540 0.5080 0.7620 1.0160 1.2700 1.5240 1.7780 2.0320 2.2860
12.7000 12.9540 13.2080 13.4620 13.7160 13.9700 14.2240 14.4780 14.7320 14.9860
1/64 1/32 3/64
0.010 0.020 0.030 0.040 0.050 0.060 0.070 0.080 0.090
0.500 0.510 0.520 0.530 0.540 0.550 0.560 0.570 0.580 0.590
5/64 3/32 7/64
0.0781 0.0938 0.1094
1.9844 2.3812 2.7781
37/64 19/32 39/64
0.5781 0.5938 0.6094
14.6844 15.0812 15.4781
0.1250
3.1750
5/8
0.6250
15.8750
2.5400 2.7940 3.0480 3.3020 3.5560 3.8100 4.0640 4.3180 4.5720 4.8260
15.2400 15.4940 15.7480 16.0020 16.2560 16.5100 16.7640 17.0180 17.2720 17.5260
1/8
0.100 0.110 0.120 0.130 0.140 0.150 0.160 0.170 0.180 0.190
0.600 0.610 0.620 0.630 0.640 0.650 0.660 0.670 0.680 0.690
9/64 5/32 11/64
0.1406 0.1562 0.1719
3.5719 3.9688 4.3656
41/64 21/32 43/64
0.6406 0.6562 0.6719
16.2719 16.6688 17.0656
3/16
0.1875
4.7625
11/16
0.6875
17.4625
0.2031 0.2188 0.2344
5.1594 5.5562 5.9531
45/64 23/32 47/64
0.7031 0.7188 0.7344
17.8594 18.2562 18.6531
5.0800 5.3340 5.5880 5.8420 6.0690 6.3500 6.6040 6.8580 7.1120 7.3660
17.7800 18.0340 18.2880 18.5420 18.7960 19.0500 19.3040 19.5580 19.8120 20.0660
13/64 7/32 15/64
0.200 0.210 0.220 0.230 0.240 0.250 0.260 0.270 0.280 0.290
0.700 0.710 0.720 0.730 0.740 0.750 0.760 0.770 0.780 0.790
1/4
0.2500
6.3500
3/4
0.7500
19.0500
17/64 9/32 19/64
0.2656 0.2812 0.2969
6.7469 7.1438 7.5406
49/64 25/32 51/64
0.7656 0.7812 0.7969
19.4469 19.8438 20.2406
0.3125
7.9375
13/16
0.8125
20.6375
7.6200 7.8740 8.1280 8.3820 8.6360 8.8900 9.1440 9.3980 9.6520 9.9060
20.3200 20.5740 20.8280 21.0820 21.3360 21.5900 21.8440 22.0980 22.3520 22.6060
5/16
0.300 0.310 0.320 0.330 0.340 0.350 0.360 0.370 0.380 0.390
0.800 0.810 0.820 0.830 0.840 0.850 0.860 0.870 0.880 0.890
21/64 11/32 23/64
0.3281 0.3438 0.3594
8.3344 8.7312 9.1281
53/64 27/32 55/64
0.8281 0.8438 0.8594
21.0344 21.4312 21.8281
3/8
0.3750
9.5250
7/8
0.8750
22.2250
9.9219 10.3188 10.7156
57/64 29/32 59/64
0.8906 0.9062 0.9219
22.6219 23.0188 23.4156
10.1600 10.4140 10.6680 10.9220 11.1760 11.4300 11.6840 11.9380 12.1920 12.4460
22.8600 23.1140 23.3680 23.6220 23.8760 24.1300 24.3840 24.6380 24.8920 25.1460 25.4000
0.3906 0.4062 0.4219
0.400 0.410 0.420 0.430 0.440 0.450 0.460 0.470 0.480 0.490
0.900 0.910 0.920 0.930 0.940 0.950 0.960 0.970 0.980 0.990 1.000
25/64 13/32 27/64 7/16
0.4375
11.1125
15/16
0.9375
23.8125
29/64 15/32 31/64
0.4531 0.4688 0.4844
11.5094 11.9062 12.3031
61/64 31/32 63/64
0.9531 0.9688 0.9844
24.2094 24.6062 25.0031
1/2
0.5000
12.700
1.0000
25.4000
1
649
REFERENCE TABLES Millimeter to Inch Conversion Table mm
Decimal
mm
Decimal
mm
Decimal
mm
Decimal
mm
Decimal
0.01 0.02 0.03 0.04 0.05
.00039 .00079 .00118 .00157 .00197
0.41 0.42 0.43 0.44 0.45
.01614 .01654 .01693 .01732 .01772
0.81 0.82 0.83 0.84 0.85
.03189 .03228 .03268 .03307 .03346
21 22 23 24 25
.82677 .86614 .90551 .94488 .98425
61 62 63 64 65
2.40157 2.44094 2.48031 2.51969 2.55906
0.06 0.07 0.08 0.09 0.10
.00236 .00276 .00315 .00354 .00394
0.46 0.47 0.48 0.49 0.50
.01811 .01850 .01890 .01929 .01969
0.86 0.87 0.88 0.89 0.90
.03386 .03425 .03465 .03504 .03543
26 27 28 29 30
1.02362 1.06299 1.10236 1.14173 1.18110
66 67 68 69 70
2.59843 2.63780 2.67717 2.71654 2.75591
0.11 0.12 0.13 0.14 0.15
.00433 .00472 .00512 .00551 .00591
0.51 0.52 0.53 0.54 0.55
.02008 .02047 .02087 .02126 .02165
0.91 0.92 0.93 0.94 0.95
.03583 .03622 .03661 .03701 .03740
31 32 33 34 35
1.22047 1.25984 1.29921 1.33858 1.37795
71 72 73 74 75
2.79528 2.83465 2.87402 2.91339 2.95276
0.16 0.17 0.18 0.19 0.20
.00630 .00669 .00709 .00748 .00787
0.56 0.57 0.58 0.59 0.60
.02205 .02244 .02283 .02323 .02362
0.96 0.97 0.98 0.99 1.00
.03780 .03819 .03858 .03898 .03937
36 37 38 39 40
1.41732 1.45669 1.49606 1.53543 1.57480
76 77 78 79 80
2.99213 3.03150 3.07087 3.11024 3.14961
0.21 0.22 0.23 0.24 0.25
.00827 .00866 .00906 .00945 .00984
0.61 0.62 0.63 0.64 0.65
.02402 .02441 .02480 .02520 .02559
1 2 3 4 5
.03937 .07874 .11811 .15748 .19685
41 42 43 44 45
1.61417 1.65354 1.69291 1.73228 1.77165
81 82 83 84 85
3.18898 3.22835 3.26772 3.30709 3.34646
0.26 0.27 0.28 0.29 0.30
.01024 .01063 .01102 .01142 .01181
0.66 0.67 0.68 0.69 0.70
.02598 .02638 .02677 .02717 .02756
6 7 8 9 10
.23622 .27559 .31496 .35433 .39370
46 47 48 49 50
1.81102 1.85039 1.88976 1.92913 1.96850
86 87 88 89 90
3.38583 3.42520 3.46457 3.50394 3.54331
0.31 0.32 0.33 0.34 0.35
.01220 .01260 .01299 .01339 .01378
0.71 0.72 0.73 0.74 0.75
.02795 .02835 .02874 .02913 .02953
11 12 13 14 15
.43307 .47244 .51181 .55118 .59055
51 52 53 54 55
2.00787 2.04724 2.08661 2.12598 2.16535
91 92 93 94 95
3.58268 3.62205 3.66142 3.70079 3.74016
0.36 0.37 0.38 0.39 0.40
.01417 .01457 .01496 .01535 .01575
0.76 0.77 0.78 0.79 0.80
.02992 .03031 .03071 .03110 .03150
16 17 18 19 20
.62992 .66929 .70866 .74803 .78740
56 57 58 59 60
2.20472 2.24409 2.28346 2.32283 2.36220
96 97 98 99 100
3.77953 3.81890 3.85827 3.89764 3.93701
650
REFERENCE TABLES Decimal Equivalents of 8ths, 16ths, 32nds, 64ths 8ths
32nds
64ths
64ths
1/8 = .125
1/32 = .03125
1/64 = .015625
33/64 = .515625
1/4 = .250
3/32 = .09375
3/64 = .046875
35/64 = .546875
3/8 = .375
5/32 = .15625
5/64 = .078125
37/64 = .578125
1/2 = .500
7/32 = .21875
7/64 = .109375
39/64 = .609375
9/32 = .28125
9/64 = .140625
41/64 = .640625
11/32 = .34375
11/64 = .171875
43/64 = .671875
13/32 = .40625
13/64 = .203125
45/64 = .703125
15/32 = .46875
15/64 = .234375
47/64 = .734375
17/32 = .53125
17/64 = .265625
49/64 = .765625
19/32 = .59375
19/64 = .296875
51/64 = .796875
21/32 = .65625
21/64 = .328125
53/64 = .828125
7/16 = .4375
23/32 = .71875
23/64 = .359375
55/64 = .859375
9/16 = .5625
25/32 = .78125
25/64 = .390625
57/64 = .890625
11/16 = .6875
27/32 = .84375
27/64 = .421875
59/64 = .921875
13/16 = .8125
29/32 = .90625
29/64 = .453125
61/64 = .953125
15/16 = .9375
31/32 = .96875
31/64 = .484375
63/64 = .984375
5/8 = .625 3/4 = .750 7/8 = .875
16ths 1/16 = .0625 3/16 = .1875 5/16 = .3125
Decimal Equivalents of Letter Size Drills Letter
Size of Drill in Inches
Letter
Size of Drill in Inches
A B C D
.234 .238 .242 .246
N O P Q
.302 .316 .323 .332
E F G H
.250 .257 .261 .266
R S T U
.339 .348 .358 .368
I J K L M
.272 .277 .281 .290 .295
V W X Y Z
.377 .386 .397 .404 .413
651
REFERENCE TABLES Decimal Equivalents of Number Size Drills Size of Drill in Inches
No.
Size of Drill in Inches
No.
Size of Drill in Inches
No.
Size of Drill in Inches
1
.2280
21
.1590
41
.0960
61
.0390
2
.2210
22
.1570
42
.0935
62
.0380
3
.2130
23
.1540
43
.0890
63
.0370
4
.2090
24
.1520
44
.0860
64
.0360
5
.2055
25
.1495
45
.0820
65
.0350
6
.2040
26
.1470
46
.0810
66
.0330
7
.2010
27
.1440
47
.0785
67
.0320
8
.1990
28
.1405
48
.0760
68
.0310
9
.1960
29
.1360
49
.0730
69
.0292
10
.1935
30
.1285
50
.0700
70
.0280
11
.1910
31
.1200
51
.0670
71
.0260
12
.1890
32
.1160
52
.0635
72
.0250
13
.1850
33
.1130
53
.0595
73
.0240
14
.1820
34
.1110
54
.0550
74
.0225
15
.1800
35
.1100
55
.0520
75
.0210
16
.1770
36
.1065
56
.0465
76
.0200
17
.1730
37
.1040
57
.0430
77
.0180
18
.1695
38
.1015
58
.0420
78
.0160
19
.1660
39
.0995
59
.0410
79
.0145
20
.1610
40
.0980
60
.0400
80
.0135
No.
American Standard Pipe Thread and Tap Drill Sizes Pipe Size Inches
652
Threads Per Inch
Root Diameter Small End of Pipe and Gage
Tap Drill Taper NPT
Straight NPS
1/8
27
.3339⬙
Q
11/32⬙
1/4
18
.4329⬙
7/16⬙
7/16⬙
3/8
18
.5676⬙
9/16⬙
37/64⬙
1/2
14
.7013⬙
45/64⬙
23/32⬙
3/4
14
.9105⬙
29/32⬙
59/64⬙
1
11 1/2
1.1441⬙
1 9/64⬙
1 5/32⬙
1 1/4
11 1/2
1.4876⬙
1 31/64⬙
1 1/2⬙
1 1/2
11 1/2
1.7265⬙
1 47/64⬙
1 3/4⬙
2
11 1/2
2.1995⬙
2 13/64⬙
2 7/32⬙
REFERENCE TABLES American National and Unified Coarse and Fine Thread Dimensions and Tap Drill Sizes p = pitch =
p
1 No. thread per inch
f 60º
d = depth = p X .649519
d
f
f = flat = p 8 pitch diameter = D – .6495 N
Size
Threads per inch NC NF UNC UNF
Outside Diameter Inches
Pitch Diameter Inches
Root Diameter Inches
Tap Drill Approx. 75% Full Thread
Decimal Equiv. of Tap Drill
0 1 1 2 2 3 3 4 4 5 5
– 64 – 56 – 48 – 40 – 40 –
80 – 72 – 64 – 56 – 48 – 44
.0600 .0730 .0730 .0860 .0860 .0990 .0990 .1120 .1120 .1250 .1250
.0519 .0629 .0640 .0744 .0759 .0855 .0874 .0958 .0985 .1088 .1102
.0438 .0527 .0550 .0628 .0657 .0719 .0758 .0795 .0849 .0925 .0955
3/64⬙ 53 53 50 50 47 46 43 42 38 37
.0469 .0595 .0595 .0700 .0700 .0785 .0810 .0890 .0935 .1015 .1040
6 6 8 8 10 10 12 12
32 – 32 – 24 – 24 –
– 40 – 36 – 32 – 28
.1380 .1380 .1640 .1640 .1900 .1900 .2160 .2160
.1177 .1218 .1437 .1460 .1629 .1697 .1889 .1928
.0974 .1055 .1234 .1279 .1359 .1494 .1619 .1696
36 33 29 29 26 21 16 15
.1065 .1130 .1360 .1360 .1470 .1590 .1770 .1800
1/4⬙ 1/4⬙ 5/16⬙ 5/16⬙ 3/8⬙ 3/8⬙ 7/16⬙ 7/16⬙ 1/2⬙ 1/2⬙
20 – 18 – 16 – 14 – 13 –
– 28 – 24 – 24 – 20 – 20
.2500 .2500 .3125 .3125 .3750 .3750 .4375 .4375 .5000 .5000
.2175 .2268 .2764 .2854 .3344 .3479 .3911 .4050 .4500 .4675
.1850 .2036 .2403 .2584 .2938 .3209 .3447 .3726 .4001 .4351
7 3
25/64⬙ 27/64⬙ 29/64⬙
.2010 .2130 .2570 .2720 .3125 .3320 .3680 .3906 .4219 .4531
9/16⬙ 9/16⬙ 5/8⬙ 5/8⬙ 3/4⬙ 3/4⬙ 7/8⬙ 7/8⬙
12 – 11 – 10 – 9 –
– 18 – 18 – 16 – 14
.5625 .5625 .6250 .6250 .7500 .7500 .8750 .8750
.5084 .5264 .5660 .5889 .6850 .7094 .8028 .8286
.4542 .4903 .5069 .5528 .6201 .6688 .7307 .7822
31/64⬙ 33/64⬙ 17/32⬙ 37/64⬙ 21/32⬙ 11/16⬙ 49/64⬙ 13/16⬙
.4844 .5156 .5312 .5781 .6562 .6875 .7656 .8125
(Continued on next page.)
F I 5/16⬙
Q U
653
REFERENCE TABLES American National and Unified Coarse and Fine Thread Dimensions and Tap Drill Sizes (continued)
Size
Threads per inch NC NF UNC UNF
1⬙ 1⬙ 1 1/8⬙ 1 1/8⬙ 1 1/4⬙
8 – 7 – 7
– 12 – 12 –
1.0000 1.0000 1.1250 1.1250 1.2500
.9188 .9459 1.0322 1.0709 1.1572
.8376 .8917 .9394 1.0168 1.0644
7/8⬙ 59/64⬙ 63/64⬙ 1 3/64⬙ 1 7/64⬙
.8750 .9219 .9844 1.0469 1.1094
1 1/4⬙ 1 3/8⬙ 1 3/8⬙ 1 1/2⬙
– 6 – 6
12 – 12 –
1.2500 1.3750 1.3750 1.5000
1.1959 1.2667 1.3209 1.3917
1.1418 1.1585 1.2668 1.2835
1 11/64⬙ 1 7/32⬙ 1 19/64⬙ 1 11/32⬙
1.1719 1.2187 1.2969 1.3437
1 1/2⬙
–
12
1.5000
1.4459
1.3918
1 27/64⬙
1.4219
1 3/4⬙ 2⬙ 2 1/4⬙ 2 1/2⬙
5 4 1/2 4 1/2 4 1/2
– – – –
1.7500 2.0000 2.2500 2.5000
1.6201 1.8557 2.1057 2.3376
1.4902 1.7113 1.9613 2.1752
1 9/16⬙ 1 25/32⬙ 2 1/32⬙ 2 1/4⬙
1.5625 1.7812 2.0313 2.2500
2 3/4⬙
4
–
2.7500
2.5876
2.4252
2 1/2⬙
2.5000
3⬙ 3 1/4⬙ 3 1/2⬙ 3 3/4⬙ 4⬙
4 4 4 4 4
– – – – –
3.0000 3.2500 3.5000 3.7500 4.0000
2.8376 3.0876 3.3376 3.5876 3.3786
2.6752 2.9252 3.1752 3.4252 3.6752
2 3/4⬙ 3⬙ 3 1/4⬙ 3 1/2⬙ 3 3/4⬙
2.7500 3.0000 3.2500 3.5000 3.7500
Outside Diameter Inches
Pitch Diameter Inches
Root Diameter Inches
Tap Drill Approx. 75% Full Thread
Decimal Equiv. of Tap Drill
Millimeter Tap Drill Sizes Decimal Equiv. Inches
Metric Tap
Tap Drill mm
Decimal Equiv. Inches
Metric Tap
Decimal Equiv. Inches
Metric Tap
Tap Drill mm
M1.6 x 0.35 1.25
.0492
M6 x 1
5.00
.1968
M16 x 2
14.00
.5512
M27 x 3
24.00
.9449
M1.8 x 0.35 1.45
.0571
M7 x 1
6.00
.2362
M16 x 1.5
14.50
.5709
M27 x 2
25.00
.9843
M2 x 0.4
1.60
.0630
M8 x 1.25
6.70
.2638
M18 x 2.5
15.50
.6102
M30 x 3.5
26.50
1.0433
M2.2 x 0.45 1.75
.0689
M8 x 1
7.00
.2756
M18 x 1.5
16.50
.6496
M30 x 2
28.00
1.1024
M2.5 x 0.45 2.05
.0807
M10 x 1.5
8.50
.3346
M20 x 2.5
17.50
.6890
M33 x 3.5
29.50
1.1614
M3 x 0.5
2.50
.0984
M10 x 1.25
8.70
.3425
M20 x 1.5
18.50
.7283
M33 x 2
31.00
1.2205
M3.5 x 0.6
2.90
.1142
M12 x 1.75
10.20
.4016
M22 x 2.5
19.50
.7677
M36 x 4
32.00
1.2598
M4 x 0.7
3.30
.1299
M12 x 1.25
10.80
.4252
M22 x 1.5
20.50
.8071
M36 x 3
33.00
1.2992
M4.5 x 0.75 3.70
.1457
M14 x 2
12.00
.4724
M24 x 3
21.00
.8268
M39 x 4
35.00
1.3780
M5 x 0.8
.1654
M14 x 1.5
12.50
.4921
M24 x 2
22.00
.8661
M39 x 3
36.00
1.4173
Metric Tap
654
Tap Drill mm
4.20
Tap Drill mm
Decimal Equiv. Inches
REFERENCE TABLES Tap Drill Sizes For Fractional Size Threads Approximately 65% Depth Thread / AMERICAN NATIONAL THREAD FORM Tap Size 1/16 1/16 1/16 5/64 5/64 5/64 5/64 3/32 3/32 3/32 3/32 7/64 7/64 7/64 1/8 1/8 1/8 1/8 9/64 9/64 9/64 5/32 5/32 5/32 11/64 11/64 3/16 3/16 3/16 3/16 13/64 13/64 13/64 7/32 7/32 7/32 15/64 15/64 15/64 1/4 1/4 1/4 1/4 1/4 5/16 5/16 5/16 5/16 5/16 3/8 3/8 3/8 3/8 7/16 7/16 7/16 7/16 1/2 1/2
Threads per Inch 72 64 60 72 64 60 56 60 56 50 48 56 50 48 48 40 36 32 40 36 32 40 36 32 36 32 36 32 30 24 32 30 24 32 28 24 32 28 24 32 28 27 24 20 32 27 24 20 18 27 24 20 16 27 24 20 14 27 24
Hole Diameter .049 .047 .046 .065 .063 .062 .061 .077 .076 .074 .073 .092 .090 .089 .105 .101 .098 .095 .116 .114 .110 .132 .129 .126 .145 .141 .161 .157 .155 .147 .173 .171 .163 .188 .184 .178 .204 .200 .194 .220 .215 .214 .209 .201 .282 .276 .272 .264 .258 .339 .334 .326 .314 .401 .397 .389 .368 .464 .460
Drill 3/64 3/64 56 52 1/16 1/16 53 5/64 48 49 49 42 43 43 36 38 40 3/32 32 33 35 30 30 1/8 27 9/64 20 22 23 26 17 11/64 20 12 13 16 6 8 10 7/32 3 3 4 7 9/32 J I 17/64 F R Q 21/64 5/16 Y X 25/64 U 15/32 29/64
Tap Size 1/2 1/2 1/2 9/16 9/16 9/16 5/8 5/8 5/8 5/8 11/16 11/16 3/4 3/4 3/4 3/4 13/16 13/16 7/8 7/8 7/8 7/8 7/8 15/16 15/16 1 1 1 1 1 1/16 1 1/8 1 1/8 1 3/16 1 1/4 1 1/4 1 5/16 1 3/8 1 3/8 1 1/2 1 1/2 1 5/8 1 3/4 1 7/8 2 2 1/8 2 1/4 2 3/8 2 1/2 2 5/8 2 3/4 2 7/8 3 3 1/8 3 1/4 3 3/8 3 1/2 3 5/8 3 3/4 4
Threads per Inch 20 13 12 27 18 12 27 18 12 11 16 11 27 16 12 10 12 10 27 18 14 12 9 12 9 27 14 12 8 8 12 7 7 12 7 7 12 6 12 6 5 1/2 5 5 4 1/2 4 1/2 4 1/2 4 4 4 4 3 1/2 3 1/2 3 1/2 3 1/2 3 1/4 3 1/4 3 1/4 3 3
Hole Diameter .451 .425 .419 .526 .508 .481 .589 .571 .544 .536 .627 .599 .714 .689 .669 .653 .731 .715 .839 .821 .805 .794 .767 .856 .829 .964 .930 .919 .878 .941 1.044 .986 1.048 1.169 1.111 1.173 1.294 1.213 1.419 1.338 1.448 1.555 1.680 1.783 1.909 2.034 2.131 2.256 2.381 2.506 2.597 2.722 2.847 2.972 3.075 3.200 3.325 3.425 3.675
Drill 29/64 27/64 27/64 17/32 33/64 31/64 19/32 37/64 35/64 17/32 5/8 19/32 23/32 11/16 43/64 21/32 47/64 23/32 27/32 53/64 13/16 51/64 49/64 55/64 53/64 31/32 15/16 59/64 7/8 15/16 1 3/64 63/64 1 3/64 1 11/64 1 7/64 1 11/64 1 19/64 1 7/32 1 27/64 1 11/32 1 29/64 1 9/16 1 11/16 1 25/32 1 29/32 2 1/32 2 1/8 2 1/4 2 3/8 2 1/2 2 19/32 2 23/32 2 27/32 2 31/32 3 1/16 3 3/16 3 5/16 3 7/16 3 11/16
655
REFERENCE TABLES Double Depth of Screw Threads
Millimeter Standard p
D.D. = 1.732 For V Thread N
f 60º
D.D. = 1.299 For American Nat. Form, U.S. Std. N
f
d
D.D. = 1.28 For Whitworth Standard N
Threads per Inch N
656
V Threads D.D.
Am. Nat. Form U.S. Standard D.D.
Whitworth Standard D.D.
2 3 4 10 13
.86600 .57733 .43300 .17320 .13323
.64950 .43300 .32475 .12990 .09992
.64000 .42666 .32000 .12800 .09846
18 20 22 24 26
.09622 .08660 .07872 .07216 .06661
.07216 .06495 .05904 .05412 .04996
.07111 .06400 .05818 .05333 .04923
27 28 30 32 34
.06415 .06185 .05773 .05412 .05094
.04811 .04639 .04330 .04059 .03820
.04740 .04571 .04266 .04000 .03764
36 38 40 56 60 80
.04811 .04558 .04330 .03093 .02887 .02165
.03608 .03418 .03247 .02319 .02165 .01623
.03555 .03368 .03200 .02285 .02133 .01600
p = distance between any point on a thread to the corresponding point on the adjacent thread d = depth – 0.64952P f = flat – 0.125P
ISO External Threads Medium Fit Designation
mm Diameter
mm Pitch
M2 x 0.4
2
0.4
M3 x 0.5
3
0.5
M4 x 0.7
4
0.7
M5 x 0.8
5
0.8
M6 x 1
6
1.0
M8 x 1.25
8
1.25
M10 x 1.5
10
1.5
M12 x 1.75
12
1.75
M16 x 2
16
2.0
M20 x 2.5
20
2.5
M24 x 3
24
3.0
M30 x 3.5
30
3.5
REFERENCE TABLES American Standard Acme Screw Thread Dimensions p
h = Basic depth of thread h⬘ = Depth of thread with clearance K = Tap drill Basic minor diameter of nut Fc = Width of flat at crest of thread Fr = Width of flat at bottom of space
n p Kr D T
FOR 10 OR LESS THREADS PER INCH h⬘ = P plus .010 2 Fr = .3707 minus .0052 n T = D plus .020
FOR MORE THAN 10 THREADS PER INCH h⬘ = P plus .005 2 Fr = .3707 minus .0026 n T = D plus .010
Threads per inch (n)
= = = = =
Depth of Thread with Clearance (h⬘)
1 1 1/3 2 3 4 5 6 7 8 9 10 12 14 16
Number of threads per inch Pitch of thread Minor diameter of screw Major diameter of screw Major diameter of tap
Flat at Top of Thread (Fc)
.5100 .3850 .2600 .1767 .1350 .1100 .0933 .0814 .0725 .0655 .0600 .0467 .0407 .0363
.3707 .2780 .1854 .1236 .0927 .0741 .0618 .0530 .0463 .0412 .0371 .0309 .0265 .0232
Fc
29º h⬘
Fr
p=1 n K = D minus p
Fc = .3707 n Kr = D minus 2h⬘
Flat at Bottom of Space (Fr)
Space at Top of Thread
Thickness at Root of Thread
.3655 .2728 .1802 .1184 .0875 .0689 .0566 .0478 .0411 .0360 .0319 .0283 .0239 .0206
.6293 .4720 .3146 .2097 .1573 .1259 .1049 .0899 .0787 .0699 .0629 .0524 .0449 .0393
.6345 .4772 .3198 .2149 .1625 .1311 .1101 .0951 .0839 .0751 .0681 .0550 .0475 .0419
Tapers and Angles Included Angle
Angle With Center Line
Taper per Foot
Degree
Minute
Second
Degree
Minute
Second
Taper per inch
Taper per inch from Center Line
1/8⬙ 1/4⬙ 3/8⬙
0 1 1
35 11 47
49 37 25
0 0 0
17 35 53
54 49 43
.010417 .020833 .031250
.005208 .010417 .015625
1/2⬙ 5/8⬙ 3/4⬙ 7/8⬙
2 2 3 4
23 59 34 10
13 1 47 33
1 1 1 2
11 29 47 5
37 30 24 17
.041667 .052083 .062500 .072917
.020833 .026042 .031250 .036458
1⬙ 1 1/4⬙ 1 1/2⬙ 1 3/4⬙
4 5 7 8
46 57 9 20
19 47 10 27
2 2 3 4
23 58 34 10
9 53 35 14
.083333 .104167 .125000 .145833
.041667 .052084 .062500 .072917
2⬙ 2 1/2⬙ 3⬙ 3 1/2⬙
9 11 14 16
31 53 2 35
38 37 0 39
4 5 7 8
45 56 1 17
49 49 30 50
.166667 .208333 .250000 .291667
.083333 .104167 .125000 .145833
4⬙ 4 1/2⬙ 5⬙ 6⬙
18 21 23 28
55 14 32 4
29 22 12 21
9 10 11 14
27 37 46 2
44 11 6 10
.333333 .375000 .416667 .500000
.166667 .187500 .208333 .250000
657
REFERENCE TABLES General Guide for Cutting Speeds and Feeds for Drills The following information is a general guide. Specific jobs may need to be modified because of varying job conditions, such as coolant, equipment and job requirements.
Guide for Drill Feeds
Drill Dia.
Feed per Rev.
Drill Dia.
Feed per Rev.
Drill feeds are governed by the size of the drill and also the material to be drilled.
Under 1/8⬙
.001⬙ - .002⬙
Under 3 mm
.025 - .05 mm
1/8⬙ - 1/4⬙
.002⬙ - .004⬙
3 - 6 mm
.05 - .100 mm
The lower feeds should be used when drilling relatively hard materials such as alloy steels. The higher feeds should be used when drilling relatively soft materials such as aluminum and brass.
1/4⬙ - 1/2⬙
.004⬙ - .007⬙
6 - 13 mm
.100 - .180 mm
1/2⬙ - 1⬙
.007⬙ - .015⬙
13 - 25 mm
.180 - .370 mm
These feeds are based on the peripheral speed of a drill.
Over 1⬙
.015⬙ - .025⬙
Over 25 mm
.370 - .630 mm
Guide for Peripheral Speeds Material
Feet/Minute Carbon Drill HSS Drill
Meters/Minute Carbon Drill HSS Drill
Machinery 30 Steel
80
9
24
Cast Iron
35
100
10.5
30
Brass
60
200
18
60
50
–
15
Alloy Steel –
Drill Dia. Inches mm 1/8 1/4 1/2 1 1 1/2 2 3
658
3 mm 6 mm 13 mm 25 mm 38 mm 50 mm 75 mm
30 (9 ) 917 458 229 115 76 57 38
PERIPHERAL SPEEDS – FEET PER MINUTE (METERS PER MINUTE) 50 (15) 60 (18) 80 (24) 100 (30) REVOLUTIONS PER MINUTE 1528 764 382 191 127 96 64
1833 917 458 229 153 115 76
2445 1222 611 306 204 153 102
3056 1528 764 382 255 191 127
200 (60) 6112 3056 1528 764 509 382 255
REFERENCE TABLES Pitch Diameter Tables – American National Thread Form For Nos. 575 and 585 Screw Thread Micrometers Number Sizes
Fractional Sizes
Caliper Reading or Pitch Diameter = D – .6495 N
Caliper Reading or Pitch Diameter = D – .6495 N
0 1 2 3 4 5 6 7 8 9 10 12 14 16 18 20 22 24 26 28 30
Caliper Reading or Max. Pitch Diameter
Single Depth of Thread
Threads Per Inch
D
N
D – .6495 N
.6495 N
.060 .073 .086 .099 .112 .125 .138 .151 .164 .177 .190 .216 .242 .268 .294 .320 .346 .372 .398 .424 .450
80 72 64 56 48 44 40 36 36 32 30 28 24 22 20 20 18 16 16 14 14
.0519 .0640 .0759 .0874 .0985 .1102 .1218 .1330 .1460 .1567 .1684 .1928 .2149 .2385 .2615 .2875 .3099 .3314 .3574 .3776 .4036
.0081 .0090 .0101 .0116 .0135 .0148 .0162 .0180 .0180 .0203 .0217 .0232 .0271 .0295 .0325 .0325 .0361 .0406 .0406 .0464 .0464
Diameter Inches D
Note: As there is no standard of diameter for the finer pitches, this column is left blank.
No.
Basic and Max. Outside Diameter
1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1 1 1/8 1 1/4 1 3/8 1 1/2 1 5/8 1 3/4 1 7/8 2 2 1/2 3 3 1/2 4
Threads per Inch N
64 62 60 58 56 54 52 50 48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 13 12 11 10 9 8 7 7 6 6 5 1/2 5 5 4 1/2 4 3 1/2 3 1/4 3
Caliper Reading of Pitch Diameter
Single Depth of Thread
D – .6495 N
.6495 N
— — — — — — — — — — — — — — — — — — — — — — .2175 .2764 .3344 .3911 .4501 .5084 .5660 .6851 .8029 .9188 1.0322 1.1572 1.2668 1.3918 1.5070 1.6201 1.7451 1.8557 2.3376 2.8145 3.3002 3.7835
.0101 .0105 .0108 .0112 .0116 .0120 .0125 .0130 .0135 .0141 .0148 .0155 .0162 .0171 .0180 .0191 .0203 .0217 .0232 .0250 .0271 .0295 .0325 .0361 .0406 .0464 .0499 .0541 .0590 .0649 .0721 .0812 .0928 .0928 .1082 .1082 .1180 .1299 .1299 .1443 .1624 .1855 .1998 .2165
659
REFERENCE TABLES Pitch Diameter Tables For Nos. 575 and 585 Screw Thread Micrometers p
Whitworth Standard
f
Caliper Reading or Pitch Diameter for Whitworth Threads = D – .640 N
660
d
f
Caliper Reading or Pitch Diameter
Single Depth of Thread
Diameter Inches
Threads per Inch
D
N
D – .640 N
.640 N
48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 12 11 11 10 10 9 9 8 7 7 6 6 5 5 4 1/2 4 1/2 4 1/2
— — — — — — — — — — — — — — .2180 .2769 .3350 .3918 .4467 .5092 .5668 .6293 .6860 .7485 .8039 .8664 .9200 1.0336 1.1586 1.2684 1.3934 1.4970 1.6220 1.7328 1.8578 1.9828
.0133 .0139 .0146 .0152 .0160 .0168 .0178 .0188 .0200 .0213 .0229 .0246 .0267 .0291 .0320 .0355 .0400 .0457 .0533 .0533 .0582 .0582 .0640 .0640 .0711 .0711 .0800 .0914 .0914 .1066 .1066 .1280 .1280 .1422 .1422 .1422
— — — — — — — — — — — — — — 1/4 5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 13/16 7/8 15/16 1 1 1/8 1 1/4 1 3/8 1 1/2 1 5/8 1 3/4 1 7/8 2 2 1/8
60º
p = pitch =
Metric Standard
1 No. thread per inch
d = depth = p X .6495
f = flat = pitch 8 Pitch
Size Mm
Intl. Std.
French Std.
2 3 4 5 6 7 8 9 10 11 12 14 16 18 20 22 24 26 27 28 30 32 33 34 36 38 39 40
.45 .55 .70 .85 1.00 1.00 1.25 1.25 1.50 1.50 1.75 2.00 2.00 2.50 2.50 2.50 3.00 — 3.00 — 3.50 — 3.50 — 4.00 — 4.00 —
.50 .50 .75 .75 1.00 1.00 1.00 1.00 1.50 — 1.50 2.00 2.00 2.50 2.50 2.50 3.00 3.00 — 3.00 3.50 3.50 3.50 3.50 4.00 4.00 — 4.00
REFERENCE TABLES Pitch Diameter Table For Nos. 575 and 585 Screw Thread Micrometers “V” Standard Thread Form Caliper Reading or Pitch Diameter for “V” Threads = D – .866 N Caliper Reading Single Depth Diameter Threads or Pitch Diameter of Thread Inches* per Inch
Threads per Inch
D
N
D – .866 N
.866 N
D
N
64 62 60 58 56 54 52 50 48 46 44 42 40 38 36 34 32 30 28 26
— — — — — — — — — — — — — — — — — — — — — —
.0135 .0140 .0144 .0149 .0155 .0161 .0167 .0173 .0180 .0188 .0197 .0206 .0217 .0228 .0241 .0255 .0271 .0289 .0309 .0333
1/4 1/4 5/16 5/16 3/8 3/8 7/16 7/16 1/2 1/2 1/2 9/16 9/16 5/8 5/8 11/16 3/4 7/8 1 1 1/8 1 1/4 1 1/2
24 20 20 18 18 16 16 14 14 13 12 14 12 11 10 10 10 9 8 8 7 6
Note: As there is no standard of diameter for the finer pitches, this column is left blank.
Diameter Inches
— —
— —
Caliper Reading or Pitch Diameter
Single Depth of Thread
D – .866 N
.866 N
.2139 .2067 .2692 .2644 .3269 .3209 .3834 .3756 .4381 .4334 .4278 .5006 .4903 .5463 .5384 .6009 .6634 .7788 .8918 1.0168 1.1263 1.3557
.0361 .0433 .0433 .0481 .0481 .0541 .0541 .0619 .0619 .0666 .0722 .0619 .0722 .0787 .0866 .0866 .0866 .0962 .1082 .1082 .1237 .1443
figures give the outside diameter for screws with threads cut theoretically sharp. As it is not practical to make these threads sharp, the outside diameter will measure * These less than the figures given, the pitch diameter remaining the same.
American Standard Acme Screw Thread Dimensions p
h = Basic depth of thread h⬘ = Depth of thread with clearance K = Tap drill Basic minor diameter of nut Fc = Width of flat at crest of thread Fr = Width of flat at bottom of space
n p Kr D T
FOR 10 OR LESS THREADS PER INCH h⬘ = p plus .010 2 Fr = .3707 minus .0052 n T = D plus .020
FOR MORE THAN 10 THREADS PER INCH h⬘ = p plus .005 2 Fr = .3707 minus .0026 n T = D plus .010
= = = = =
Number of threads per inch Pitch of thread Minor diameter of screw Major diameter of screw Major diameter of tap
Fc
29º h⬘
Fr
Threads per inch (n) 1 1 1/3 2 3 4 5 6 7 8 9 10 12 14 16
Depth of Thread with Clearance (h⬘) .5100 .3850 .2600 .1767 .1350 .1100 .0933 .0814 .0725 .0655 .0600 .0467 .0407 .0363
Flat at Top of Thread (Fc) .3707 .2780 .1854 .1236 .0927 .0741 .0618 .0530 .0463 .0412 .0371 .0309 .0265 .0232
Flat at Bottom of Space (Fr) .3655 .2728 .1802 .1184 .0875 .0689 .0566 .0478 .0411 .0360 .0319 .0283 .0239 .0206
p=1 n K = D minus p
Space at Top of Thread .6293 .4720 .3146 .2097 .1573 .1259 .1049 .0899 .0787 .0699 .0629 .0524 .0449 .0393
Fc = .3707 n Kr = D minus 2h⬘
Thickness at Root of Thread .6345 .4772 .3198 .2149 .1625 .1311 .1101 .0951 .0839 .0751 .0681 .0550 .0475 .0419
661
REFERENCE TABLES Temperature Conversion Using this table to convert Fahrenheit degrees (Fº) directly to Celsius degrees (Cº) and vice versa. It covers the range of temperatures used in most hardening, tempering and annealing operations.
Lower, higher and intermediate conversions can be made by substituting a known Fahrenheit (Fº) or Celsius (Cº) temperature figure in either of the following formulas. Cº = Fº 9- 32 x 5
Fº = Cº 5x 9 + 32 Fº
Cº
Fº
Cº
Fº
Cº
Fº
Cº
Fº
Cº
–160 –140 –120 –100 –80 –60 –40
–107 –96 –84 –73 –62 –51 –40
–20 –0 –20 –32 –40 –60 –80
–29 –18 –7 0 4 16 27
–100 –120 –140 –160 –180 –200 –212
–38 –49 –60 –71 –82 –93 –100
220 300 400 500 600 700 800
–104 –149 –204 –260 –316 –371 –427
–1000 –1200 –1400 –1600 –1800 –2000 –2200
–538 –649 –760 –871 –982 –1093 –1204
High Temperatures Judged by Color and Colors for Tempering Degrees Centigrade 400 525 700 900 1100 1300 1500
Degrees Fahrenheit 752 975 1292 1652 2012 2372 2732
High Temperatures Judged by Color Red heat, visible in the dark Red heat, visible in daylight Dark red Cherry-red Orange-red Yellow-white Brilliant white
Degrees Centigrade 221.1 237.8 254.4 260.0 271.1 282.2 293.3
Degrees Fahrenheit 430 460 490 500 520 540 560
Colors for Tempering Very pale yellow Straw-yellow Yellow-brown Brown-yellow Brown-purple Full purple Full blue
Rules Relative to the Circle To Find Circumference – Multiply diameter by 3.1416 – Or divide diameter by 0.3183 To Find Diameter – Multiply circumference by 0.3183 – Or divide circumference by 3.1416 To Find Radius – Multiply circumference by 0.15915 – Or divide circumference by 6.28318 To Find Side of an Inscribed Square – Multiply diameter by 0.7071 – Or multiply circumference by 0.2251 – Or divide circumference by 4.4428 To Find Side of an Equal Square – Multiply diameter by 0.8862 – Or divide diameter by 1.1284 – Or multiply circumference by 0.2821 – Or divide circumference by 3.545
662
Square – A side multiplied by 1.4142 equals diameter of its circumscribing circle – A side multiplied by 4.443 equals circumference of its circumscribing circle – A side multiplied by 1.128 equals diameter of an equal side – A side multiplied by 3.547 equals circumference of an equal circle To Find the Area of a Circle – Multiply circumference by one-quarter of the diameter – Or multiply the square of diameter by 0.7854 – Or multiply the square of circumference by .07958 – Or multiply the square of 1/2 diameter by 3.1416 To Find the Surface of a Sphere or Globe – Multiply the diameter by the circumference – Or multiply the square of a diameter by 3.1416 – Or multiply four times the square of radius by 3.1416
REFERENCE TABLES Standards for Sheet and Wire Gages with corresponding Starrett Gages Dimensions of Sizes in Decimal Parts of an Inch Starrett Sheet and Wire Gage Cat. Nos.
No. 281
No. 188 No. 245
No. 287
No. 280 No.283 American S. & W. U.S. Standard Gage Number of American or Birmingham or Washburn & Moen, Co’s. Music for Sheet and Wire Gage Brown & Sharpe Stubs’ Iron Wire (Worcester, MA) Wire Gage Stubs’ Steel Wire Plate Iron and Steel 00000000 — — — — — — 0000000 — — — — — — 000000 — — — .004 — .46875 00000 — — — .005 — .4375 0000 .460 .454 .3938 .006 — .40625 000 .40964 .425 .3625 .007 — .375 00 .3648 .380 .3310 .008 — .34375 0 .32486 .340 .3065 .009 — .3125 1 .2893 .300 .2830 .010 .227 .28125 2 .25763 .284 .2625 .011 .219 .265625 3 .22942 .259 .2437 .012 .212 .250 4 .20431 .238 .2253 .013 .207 .234375 5 .18194 .220 .2070 .014 .204 .21875 6 .16202 .203 .1920 .016 .201 .203125 7 .14428 .180 .1770 .018 .199 .1875 8 .12849 .165 .1620 .020 .197 .171875 9 .11443 .148 .1483 .022 .194 .15625 10 .10189 .134 .1350 .024 .191 .140625 11 .090742 .120 .1205 .026 .188 .125 12 .080808 .109 .1055 .029 .185 .109375 13 .071961 .095 .0915 .031 .182 .09375 14 .064084 .083 .0800 .033 .180 .078125 15 .057068 .072 .0720 .035 .178 .0703125 16 .05082 .065 .0625 .037 .175 .0625 17 .045257 .058 .0540 .039 .172 .05625 18 .040303 .049 .0475 .041 .168 .050 19 .03589 .042 .0410 .043 .164 .04375 20 .031961 .035 .0348 .045 .161 .0375 21 .028462 .032 .03175 .047 .157 .034375 22 .025347 .028 .0286 .049 .155 .03125 23 .022571 .025 .0258 .051 .153 .028125 24 .0201 .022 .0230 .055 .151 .025 25 .0179 .020 .0204 .059 .148 .021875 26 .01594 .018 .0181 .063 .146 .01875 27 .014195 .016 .0173 .067 .143 .0171875 28 .012641 .014 .0162 .071 .139 .015625 29 .011257 .013 .0150 .075 .134 .0140625 30 .010025 .012 .0140 .080 .127 .0125 31 .008928 .010 .0132 .085 .120 .0109375 32 .00795 .009 .0128 .090 .115 .01015625 33 .00708 .008 .0118 .095 .112 .009375 34 .006304 .007 .0104 — .110 .00859375 35 .005614 .005 .0095 — .108 .0078125 36 .005 .004 .0090 — .106 .00703125 37 .004453 — — — .103 .006640625 38 .003965 — — — .101 .00625 39 .003531 — — — .099 — 40 .003144 — — — .097 —
663
REFERENCE TABLES Triangle Chart For the Rapid Solution of Right-Angle and Oblique-Angle Triangles
664
J.W. DONCHIN CO.
www.jwdonchin.com
Precision Measuring Equipment and Industrial Supplies since 1924. 4841 W. Chicago Ave. - Chicago, IL 60651 • Phone: 773-261-2182 • Fax: 773-261-2867 •
[email protected]
J.W. Donchin Co. was established in 1924 and has been known world wide ever since. Customer Service is our Main Focus. We offer Expert Product Knowledge, Large Stocking Inventory and Competitive Pricing to assist you in locating and selecting the correct tool or product to fit your needs. (J.W. Donchin Co. is one of L.S. Starrett’s largest stocking distributors.)
Contact Information: Phone:
773-261-2182
Fax:
773-261-2867
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