Case 2050M - Page 160

7-MAINTENANCE
Inchnon-angedhardware
Nominalsize
SAEgrade5boltandnutSAEgrade8boltandnut
LocknutGrBW/
Gr5bolt
LocknutGrCW/
Gr8bolt
Unplatedor
silverplated
Plated
W/ZnCrgold
Unplatedor
Platedsilver
Plated
W/ZnCrgold
1/4
8N·m
(71lbin)
11N·m
(97lbin)
12N·m
(106lbin)
16N·m
(142lbin)
8.5N·m
(75lbin)
12.2N·m
(109lbin)
5/16
17N·m
(150lbin)
23N·m
(204lbin)
24N·m
(212lbin)
32N·m
(283lbin)
17.5N·m
(155lbin)
25N·m
(220lbin)
3/8
30N·m
(22lbft)
40N·m
(30lbft)
43N·m
(31lbft)
57N·m
(42lbft)
31N·m
(23lbft)
44N·m
(33lbft)
7/16
48N·m
(36lbft)
65N·m
(48lbft)
68N·m
(50lbft)
91N·m
(67lbft)
50N·m
(37lbft)
71N·m
(53lbft)
1/2
74N·m
(54lbft)
98N·m
(73lbft)
104N·m
(77lbft)
139N·m
(103lbft)
76N·m
(56lbft)
108N·m
(80lbft)
9/16
107N·m
(79lbft)
142N·m
(105lbft)
150N·m
(111lbft)
201N·m
(148lbft)
111N·m
(82lbft)
156N·m
(115lbft)
5/8
147N·m
(108lbft)
196N·m
(145lbft)
208N·m
(153lbft)
277N·m
(204lbft)
153N·m
(113lbft)
215N·m
(159lbft)
3/4
261N·m
(193lbft)
348N·m
(257lbft)
369N·m
(272lbft)
491N·m
(362lbft)
271N·m
(200lbft)
383N·m
(282lbft)
7/8
420N·m
(310lbft)
561N·m
(413lbft)
594N·m
(438lbft)
791N·m
(584lbft)
437N·m
(323lbft)
617N·m
(455lbft)
1
630N·m
(465lbft)
841N·m
(620lbft)
890N·m
(656lbft)
1187N·m
(875lbft)
654N·m
(483lbft)
924N·m
(681lbft)
Identication
Inchboltsandfree-spinningnuts
200836823
Grademarkingexamples
SAEGradeIdentication
1
Grade2-NoMarks
4
Grade2Nut-NoMarks
2
Grade5-ThreeMarks
5
Grade5Nut-Marks120°Apart
3
Grade8-FiveMarks
6
Grade8Nut-Marks60°Apart
7-4