TORQUE SPECIFICATIONS
The following tables list torque values for standard
hardware. This is a guide for average application
involving typical stresses and machined surfaces.
Values are based upon physical limitations of clean,
plated and lubricated hardware. Under more extreme
conditions, individual torque value should be followed.
Conversion formulas are provided in the adjacent table:
Conversion Formula
ft-lb to N•m [ft-lb]*1.3558 = [N•m)
ft-lb to in-lb [ft-lb]*12 = [in-lb]
N•m to in-lb [N•m]*8.8508 = [in-lb]
Standard Inch Fasteners
Table 2-12. Torque Speciî›™cations For Standard Inch Fasteners
SIZE THREAD
CAPSCREWS: SAE GRADE 5 CAPSCREWS: SAE GRADE 8
TORQUE (ft lb) TORQUE N•m TORQUE (ft lb) TORQUE N•m
Dry Lubed Dry Lubed Dry Lubed Dry Lubed
1/4 20 UNC 8 6 11 8 12 9 16 12
28 UNF 10 7 14 9 14 10 19 14
5/16 18 UNC 17 13 23 18 25 18 34 24
24 UNF 19 15 26 20 27 20 37 27
3/8 16 UNC 31 23 42 31 44 33 60 45
24 UNF 35 26 47 35 49 37 66 50
7/16 14 UNC 49 37 66 50 70 52 95 71
20 UNF 55 41 75 56 78 58 106 79
1/2 13 UNC 75 57 102 77 106 80 144 108
20 UNF 85 64 115 87 120 90 163 122
9/16 12 UNC 109 82 148 111 154 115 209 156
18 UNF 121 91 164 123 171 128 232 174
5/8 11 UNC 150 113
203 153 212 159 287 216
18 UNF 170 127 230 172 240 180 325 244
3/4 10 UNC 267 200 362 271 376 282 510 382
16 UNF 297 223 403 302 420 315 569 427
7/8 9 UNC 429 322 582 437 606 455 822 617
14 UNF 474 355 643 481 669 502 907 681
1 8 UNC 644 483 873 655 909 681 1232 923
14 UNF 722 542 979 735 1020 765 1383 1037
1-1/4 7 UNC 1121 840 1520 1139 1817 1363 2464 1848
12 UNF 1241 930 1683 1261 2012 1509 2728 2046
1-1/2 6 UNC 1950 1462 2644 1982 3162 2371 4287 3215
12 UNF 2194 1645 2975 2230 3557 2668 4823 3617
2
Rosco CSV Variable Width Chip Spreader
2-7
Information and Speciî›™cations
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