IN FOOT- -POUNDS (NEWTON METERS) FOR NORMAL ASSEMBLY APPLICATIONS
CLASS 5.8
NOMINAL
UNPLATED
SIZE
M4
15* (1.7)
M6
51* (5.8)
M8
124* (14)
M10
21 (28)
M12
36 (49)
M16
89 (121)
M20
175 (237)
M24
303 (411)
NOTE: Torque values shown with * are inch pounds.
SECTION 8 - - SPECIFICATIONS
MINIMUM HARDWARE TIGHTENING TORQUES
METRIC HARDWARE AND LOCKNUTS
PLATED
UNPLATED
w/ZnCr
19* (2.2)
23* (2.6)
67* (7.6)
79* (8.9)
159* (18)
195* (22)
27 (36)
32 (43)
46 (63)
55 (75)
117 (158)
137 (186)
226 (307)
277 (375)
392 (531)
478 (648)
IDENTIFICATION
HEX CAP SCREWS AND CARRIAGE BOLTS
CLASSES 5.6 AND UP
MANUFACTURERS IDENTIFICATION
PROPERTY CLASS
HEX NUTS AND LOCKNUTS
CLASSES 05 AND UP
MANUFACTURERS IDENTIFICATION
PROPERTY CLASS
CLASS 8.8
PLATED
UNPLATED
w/ZnCr
30* (3.4)
33* (3.7)
102* (12)
115* (13)
248* (28)
274* (31)
41 (56)
72 (97)
79 (107)
177 (240)
196 (266)
358 (485)
383 (519)
619 (839)
662 (897)
CLOCK MARKING
CLASS 10.9
PLATED
w/ZnCr
42* (4.8)
150* (17)
354* (40)
45 (61)
58 (79)
102 (138)
254 (344)
495 (671)
855 (1160)
LOCKNUT
CL.8
w/CL8.8
BOLT
16* (1.8)
56* (6.3)
133* (15)
22 (30)
39 (53)
97 (131)
195 (265)
338 (458)
8--23