Filter
Top Products
TP-6138 5/02A-4 Appendix
Appendix C General Torque Specifications
Use the following torque specifications when service
literature instructions give no specific torque values.
The charts list values for new plated, zinc phosphate, or
oiled threads. Increase values by 15% for nonplated
threads. All torque values are +0%/--10%.
American Standard Fasteners Torque Specifications
T
o
r
q
u
e
Assembled into Cast Iron or Steel
Assembled into
A
l
u
m
i
n
u
m
Size
T
orque
Measurement
Grade 2 Grade 5 Grade 8
A
l
um
i
num
Grade2or5
8-32 Nm (in. lb.) 1.8 (16) 2.3 (20) — 1.8 (16)
10-24 Nm (in. lb.) 2.9 (26) 3.6 (32) — 2.9 (26)
10-32 Nm (in. lb.) 2.9 (26) 3.6 (32) — 2.9 (26)
1/4-20 Nm (in. lb.) 6.8 (60) 10.8 (96) 14.9 (132) 6.8 (60)
1/4-28 Nm (in. lb.) 8.1 (72) 12.2 (108) 16.3 (144) 8.1 (72)
5/16-18 Nm (in. lb.) 13.6 (120) 21.7 (192) 29.8 (264) 13.6 (120)
5/16-24 Nm (in. lb.) 14.9 (132) 23.1 (204) 32.5 (288) 14.9 (132)
3/8-16 Nm (ft. lb.) 24.0 (18) 38.0 (28) 53.0 (39) 24.0 (18)
3/8-24 Nm (ft. lb.) 27.0 (20) 42.0 (31) 60.0 (44) 27.0 (20)
7/16-14 Nm (ft. lb.) 39.0 (29) 60.0 (44) 85.0 (63) —
7/16-20 Nm (ft. lb.) 43.0 (32) 68.0 (50) 95.0 (70) —
1/2-13 Nm (ft. lb.) 60.0 (44) 92.0 (68) 130.0 (96) —
1/2-20 Nm (ft. lb.) 66.0 (49) 103.0 (76) 146.0 (108) —
9/16-12 Nm (ft. lb.) 81.0 (60) 133.0 (98) 187.0 (138) —
9/16-18 Nm (ft. lb.) 91.0 (67) 148.0 (109) 209.0 (154) —
5/8-11 Nm (ft. lb.) 113.0 (83) 183.0 (135) 259.0 (191) —
5/8-18 Nm (ft. lb.) 128.0 (94) 208.0 (153) 293.0 (216) —
3/4-10 Nm (ft. lb.) 199.0 (147) 325.0 (240) 458.0 (338) —
3/4-16 Nm (ft. lb.) 222.0 (164) 363.0 (268) 513.0 (378) —
1-8 Nm (ft. lb.) 259.0 (191) 721.0 (532) 1109.0 (818) —
1-12 Nm (ft. lb.) 283.0 (209) 789.0 (582) 1214.0 (895) —
Metric Fasteners Torque Specifications, Measured in Nm (ft. lb.)
Assembled into Cast Iron or Steel
Assembled into
A
l
u
m
i
n
u
m
Size (mm)
Grade 5.8 Grade 8.8 Grade 10.9
A
luminum
Grade 5.8 or 8.8
M6 x 1.00 5.6 (4) 9.9 (7) 14.0 (10) 5.6 (4)
M8 x 1.25 13.6 (10) 25.0 (18) 35.0 (26) 13.6 (10)
M8 x 1.00 21.0 (16) 25.0 (18) 35.0 (26) 21.0 (16)
M10 x 1.50 27.0 (20) 49.0 (35) 68.0 (50) 27.0 (20)
M10 x 1.25 39.0 (29) 49.0 (35) 68.0 (50) 39.0 (29)
M12 x 1.75 47.0 (35) 83.0 (61) 117.0 (86) —
M12 x 1.50 65.0 (48) 88.0 (65) 125.0 (92) —
M14 x 2.00 74.0 (55) 132.0 (97) 185.0 (136) —
M14 x 1.50 100.0 (74) 140.0 (103) 192.0 (142) —
M16 x 2.00 115.0 (85) 200.0 (148) 285.0 (210) —
M16 x 1.50 141.0 (104) 210.0 (155) 295.0 (218) —
M18 x 2.50 155.0 (114) 275.0 (203) 390.0 (288) —
M18 x 1.50 196.0 (145) 305.0 (225) 425.0 (315) —