TM 10-4520-262-12&P 0069 00
0069 00-2
Table 2. General Torque Requirements for Dry Fasteners (1/4-20 UNC through 1-1/2-12 UNF)*
Torque Requirement in lb ft (N.m)
Bolt/Screw Size
SAE Grade 1 or 2
SAE Grade 5
SAE Grade 6 or 7
SAE Grade 8
1/4-20 UNC
1/4-2SUNF
5 (7)
7 (8)
8 (11)
10 (14)
10 (14)
12 (16)
12 (16)
14 (19)
5/16-18 UNC
5/16-24 UNF
11 (15)
13 (18)
17 (23)
19 (26)
19 (26)
23 (31)
24 (33)
27 (37)
3/8-16 UNC
3/8-24 UNF
18 (24)
20 (27)
31 (42)
35 (47)
34 (46)
42 (57)
44 (60)
49 (66)
7/16-14 UNC
7/16-20 UNF
28 (38)
30 (41)
49 (66)
55 (75)
55 (75)
67 (91)
70 (95)
78 (106)
1/2-13UNC
1/2-2OUNF
39 (53)
41 (56)
75 (102)
85 (115)
85 (115)
102 (138)
105 (142)
120 (163)
9/16-12UNC
9/16-18UNF
51 (69)
55 (75)
110 (149)
120 (163)
120 (163)
145 (197)
155 (210)
170 (231)
5/8-11UNC
5/8-18 UNF
63 (85)
95 (129)
150 (203)
170 (231)
167 (226)
205 (278)
210 (285)
240 (325)
3/4-10 UNC
3/4-16 UNF
105 (142)
115 (156)
270 (366)
295 (400)
280 (380)
357 (484)
375 (509)
420 (570)
7/8-9 UNC
7/8-14 UNF
160 (217)
175 (237)
395 (536)
435 (590)
440 (597)
555 (753)
605 (820)
675 (915)
1-8 UNC
1-14UNF
235 (319)
250 (339)
590 (800)
660 (865)
660 (895)
825 (1119)
910 (1234)
999 (1342)
1-1/8-7 UNC
1-1/8-12 UNF
350 (475)
400 (542)
800 (1085)
880 (1193)
1000 (1356)
1050 (1424)
1280 (1736)
1440 (1953)
1-1/4-7 UNC
1-1/4-I2UNF
500 (678)
550 (746)
1080 (1464)
1125 (1526)
1325 (1797)
1325 (1797)
1820 (2468)
1820 (2712)
1-3/8-6 UNC
1-3/8-12 UNF
660 (895)
740 (1003)
1460 (1980)
1680 (2278)
1800 (2441)
1960 (2658)
2380 (3227)
2720 (3688)
1-1/2-6UNC
1-1/2-12 UNF
870 (1180)
980 (1329)
1940 (2631)
2200 (2983)
2913 (3950)
3000 (4068)
3160 (4285)
3560 (4827)
* Torque given is for clean, dry threads. Reduce by 10% when lubricated.
