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NOTE: In the Imperial units tables, the nominal sizes, 1/4 (0.25) in (inch) and 5/16 (0.3125) in (inch) hardware torque
specifications are shown as a Newton meters (pound-inches) numerical value.
Nominal sizes 3/8 (0.375) in (inch) through 1 (1.0) in (inch) hardware torque specifications are shown as a Newton
meters (pound-feet) numerical value.
Inch non-flanged hardware
Plain (PLN) – an unplated hardware finish with residual manufacturing oils
Zinc-dichromate (ZND) – a yellow colored chemical plating formula yellow applied to the hardware
Nominal size
1/4 (0.25) in
5/16 (0.3125) in
3/8 (0.375) in
7/16 (0.4375) in
1/2 (0.50) in
9/16 (0.5625) in
5/8 (0.625) in
3/4 (0.75) in
7/8 (0.875) in
1 (1.0) in
Inch flanged hardware
Plain (PLN) – an unplated hardware finish with residual manufacturing oils
Zinc-dichromate (ZND) – a yellow colored chemical plating formula yellow applied to the hardware
Nominal size
1/4 (0.25) in
5/16 (0.3125) in
3/8 (0.375) in
7/16 (0.4375) in
1/2 (0.50) in
9/16 (0.5625) in
5/8 (0.625) in
3/4 (0.75) in
7/8 (0.875) in
1 (1.0) in
SAE Grade
SAE Grade
(GR) 5
bolt and nut
bolt and nut
PLN and ZND
PLN and ZND
N·m (lb in)
N·m (lb in)
11 (97)
23 (204)
N·m (lb ft)
N·m (lb ft)
40 (30)
65 (48)
98 (73)
142 (105)
196 (145)
348 (257)
561 (413)
841 620)
SAE Grade
SAE Grade
(GR) 5
bolt and nut
bolt and nut
PLN and ZND
PLN and ZND
N·m (lb ft)
N·m (lb ft)
12 (106)
25 (221)
N·m (lb ft)
N·m (lb ft)
44 (33)
71 (52)
108 (90)
156 (115)
216 (159)
383 (282)
617 (455)
925 (682)
INTRODUCTION
Flange locknut
(GR) 8
w/ GR 5 bolt
N·m (lb in)
16 (142)
32 (283)
N·m (lb ft)
57 (42)
91 (67)
139 (103)
201 (148)
277 (204)
491 (362)
791 (584)
1187 (875)
Flange locknut
(GR) 8
w/ GR 5 bolt
N·m (lb ft)
17 (150)
35 (310)
N·m (lb ft)
63 (46)
100 (74)
153 (113)
221 (163)
304 (225)
541 (399)
871 (642)
1305 (963)
47816352 10/12/2014
15
Flange locknut
GR F
w/ GR 8 bolt
ZND
8.5 (75)
17.5 (155)
31 (23)
50 (37)
76 (56)
111 (82)
153 (113)
271 (200)
437 (323)
654 (483)
Flange locknut
GR F
w/ GR 8 bolt
ZND
8 (71)
17 (150)
30 (22)
48 (35)
74 (55)
106 (78)
147 (108)
261 (193)
421 (311)
631 (465)
GR G
ZND
N·m (lb in)
12.2 (109)
25 (220)
N·m (lb ft)
44 (33)
71 (53)
108 (80)
156 (115)
215 (159)
383 (282)
617 (455)
924 (681)
GR G
ZND
N·m (lb ft)
12 (106)
24 (212)
N·m (lb ft)
43 (32)
68 (50)
104 (77)
157 (116)
207 (153)
369 (272)
594 (438)
890 (656)
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