Metric Fasteners Torque Limits
Table 1-2. Torque Limits - Torque Values for Lubricated or Plated Metric Thread Fasteners
Cap Screw Head Markings
(Manufacturer’s Marks
May Vary)
Class 8.8* or 9.8+ Class 10.9* Class 12.9
Thread Diameter-Pitch Torque: lb-ft (N•m)
DIA. INCHES lb-ft (N•m) lb-ft (N•m) lb-ft (N•m)
M6M8
M8 X 1.25
5 (7)
12 (16)
13 (18)
7 (9)
17 (23)
18 (24)
12 (16)
30 (41)
29 (39)
M10
M10 X 1.25
24 (33)
27 (37)
34 (46)
38 (52)
70 (95)
60 (81)
M12
M12 X 1.5
42 (57)
43 (58)
60 (81)
62 (84)
120 (163)
M14
M14 X 1.5
66 (89)
72 (98)
95 (129)
103 (140)
190 (258)
M16
M16 X 1.5
103 (140)
110 (149)
148 (201)
157 (213)
300 (407)
M18
M18 X 1.5
147 (199)
165 (224)
203 (275)
320 (434)
410 (556)
M20
M20 X 1.5
208 (282)
213 (289)
288 (390)
320 (434)
580 (786)
M22
M22 X 1.5
283 (384)
315 (427)
392 (531)
431 (584)
800 (1085)
M24
M24 X 2
360 (488)
392 (531)
498 (675)
542 (735)
1000 (1356)
M27
M27 X 2
527 (715)
569 (771)
729 (988)
788 (1068)
1475 (2000)
M30
M30 X 2
715 (969)
792 (1074)
990 (1342)
1096 (1486)
2000 (2712)
M33 1300 (1763) 1850 (2508) 2150 (2915)
M36 2100 (2847) 3000 (4067) 3500 (4745)
*Coat plated and unplated fasteners with oil before installation.
+Use if bolt or nut is lubricated or plated (zinc-phosphate conversion-coated, cadmium-plated, or waxed).
SPECIFICATION AND GENERAL INFORMATION
1
1-4 5100048604 (12-18)
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