TM 10-5430-243-12&P
0040 00
0040 00-2
Table 1. General Torque Requirements for Dry Fasteners*.
Torque Requirement in lb-ft (N m)
Bolt/Screw
SAE Grade
SAE Grade
SAE Grade
SAE Grade
Size
1 or 2
5
6 or 7
8
1/4-20 UNC
5 (7)
8 (11)
10 (14)
12 (16)
1/4-28 UNF
7 (8)
10 (14)
12 (16)
14 (19)
5/16-18 UNC
11 (15)
17 (23)
19 (26)
24 (33)
5/16-24 UNF
13 (18)
19 (26)
23 (31)
27 (37)
3/8-16 UNC
18 (24)
31 (42)
34 (46)
44 (60)
3/8-24 UNF
20 (27)
35 (47)
42 (57)
49 (66)
7/16-14 UNC
28 (38)
49 (66)
55 (75)
70 (95)
7/16-20 UNF
30 (41)
55 (75)
67 (91)
78 (106)
1/2-13 UNC
39 (53)
75 (102)
85 (115)
105 (142)
1/2-20 UNF
41 (56)
85 (115)
102 (138)
120 (163)
9/16-12 UNC
51 (69)
110 (149)
120 (163)
155 (210)
9/16-18 UNF
55 (75)
120 (163)
145 (197)
170 (231)
5/8-11 UNC
63 (85)
150 (203)
167 (226)
210 (285)
5/8-18 UNF
95 (129)
170 (231)
205 (278)
240 (325)
3/4-10 UNC
105 (142)
270 (366)
280 (380)
375 (509)
3/4-16 UNF
115 (156)
295 (400)
357 (484)
420 (570)
7/8-9 UNC
160 (217)
395 (536)
440 (597)
605 (820)
7/8-14 UNF
175 (237)
435 (590)
555 (753)
675 (915)
1-8 UNC
235 (319)
590 (800)
660 (895)
910 (1234)
1-14 UNF
250 (339)
660 (865)
825 (1119)
999 (1342)
1-1/8-7 UN
350 (475)
800 (1085)
1000 (1356)
1280 (1736)
1-1/8-12 UNF
400 (542)
880 (1193)
1050 (1424)
1440 (1953)
1-1/4-7 UNC
500 (678)
1080 (1464)
1325 (1797)
1820 (2468)
1-1/4-12 UNF
550 (746)
1125 (1526)
1325 (1797)
1820 (2712)
1-3/8-6 UNC
660 (895)
1460 (1980)
1800 (2441)
2380 (3227)
1-3/8-12 UNF
740 (1003)
1680 (2278)
1960 (2658)
2720 (3688)
1-1/2-6 UNC
870 (1180)
1940 (2631)
2913 (3950)
3160 (4285)
1-1/2-12 UNF
980 (1329)
2200 (2983)
3000 (4068)
3560 (4827)
*Torque given is for clean, dry threads.
