TM 10-3510-220-24
APPENDIX D
TORQUE LIMITS
D-1. GENERAL This appendix provides general torque limits for fasteners. Special torque values
are indicated in the maintenance procedures for applicable components. The general torque values
given in this appendix shall be used when specific torque values are not indicated in the maintenance
procedures.
D-2. TORQUE LIMITS. Torque limits are listed in table D-1 for fasteners. Dry fasteners are
defined as fasteners on which no lubricants are applied to the threads; wet fasteners are defined as
fasteners on which specific graphite or moly-disulphide greases or other extreme-pressure lubricants
are applied to the threads. Table D-2 lists minimum breakaway torque values for-locknuts.
Table D-1. General Torque Requirements for Dry Fasteners*
Bolt/screw
size
1/4 - 20 UNC
1/4 - 28 UNF
5/16 - 18 UNC
5/16 - 24 UNF
3/8 - 16 UNC
3/8 - 24 UNF
7/16 - 14 UNC
7/16 - 20 UNF
1/2 - 13 UNC
1/2 - 20 UNF
9/16 - 12 UNC
9/16 - 18 UNF
5/8 - 11 UNC
5/8 - 18 UNF
3/4 - 10 UNC
3/4 - 16 UNF
7/8 - 9 UNC
7/8 - 14 UNF
1 - 8 UNC
1 - 14 UNF
Torque requirement in lb ft (N.m)
SAE grade
SAE grade
1or2
5 (7)
6 (8)
11 (15)
13 (18)
18 (24)
20 (27)
28 (38)
30 (41)
39 (53)
41 (56)
51 (69)
55 (75)
63 (85)
95 (129)
105 (142)
115 (156)
160 (217)
175 (237)
235 (319)
250 (339)
5
8 (11)
10 (14)
17 (23)
19 (26)
31 (42)
35 (47)
49 (66)
55 (75)
75 (102)
85 (115)
110 (149)
120 (163)
150 (203)
170 (231)
270 (366)
295 (400)
395 (536)
435 (590)
590 (800)
660 (895)
SAE grade
6 or 7
10 (14)
12 (16)
19 (26)
23 (31)
34 (46)
42 (57)
55 (75)
67 (91)
85 (115)
102 (138)
120 (163)
145 (197)
167 (226)
205 (278)
280 (380)
357 (484)
440 (597)
555 (753)
660 (895)
825 (1119)
SAE grade
8
12 (16)
14 (19)
24 (33)
27 (37)
44 (60)
49 (66)
70 (95)
78 (106)
105 (142)
120 (163)
155 (210)
170 (231)
210 (285)
240 (325)
375 (509)
420 (570)
605 (820)
675 (915)
910 (1234)
990 (1342)
*See footnote at end of table.
D-1
