SECTION 1 - GENERAL INFORMATION
page 1-19
GRADE 2*
GRADE 5, 5.1, OR 5.2
GRADE 8 OR 8.2
L9 (ALLOY)
Dry **
Lubricated**
Dry **
Lubricated**
Dry **
Lubricated**
Head
Nut
SIZE
N
A
m
lbf
A
ft
N
A
m
lbf
A
ft
N
A
m
lbf
A
ft
N
A
m
lbf
A
ft
N
A
m
lbf
A
ft
N
A
m
lbf
A
ft
N
A
m
lbf
A
ft
N
A
m
lbf
A
ft
1/4 UNF
7.5
5.5
5.7
4.2
10.8
8
8.5
6.3
16.3
12
12.2
9
13.6
10
14.9
11
1/4 UNC
8.5
6.3
6.4
4.7
13.6
10
9.8
7.2
19
14
13.6
10
16.3
12
17.6
13
5/16 UNF
15
11
11
8
23
17
18
13
33
24
24
18
26
19
28
21
5/16 UNC
16
12
12
9
26
19
19
14
37
27
27
20
27
20
31
23
3/8 UNF
27
20
20
15
41
30
31
23
61
45
47
35
41
30
45
33
3/8 UNC
31
23
23
17
47
35
34
25
68
50
47
35
47
35
52
38
7/16 UNF
43
32
33
24
68
50
47
35
95
70
68
50
75
55
81
60
7/16 UNC
49
36
37
27
75
55
54
40
108
80
81
60
81
60
88
65
1/2 UNF
68
50
47
35
102
75
75
55
149
110
108
80
115
85
129
95
1/2 UNC
75
55
54
40
115
85
88
65
163
120
122
90
129
95
142
105
9/16 UNF
95
70
75
55
149
110
108
80
203
150
149
110
163
120
190
140
9/16 UNC
108
80
81
60
163
120
122
90
231
170
176
130
183
135
203
150
5/8 UNF
136
100
102
75
203
150
149
110
285
210
217
160
231
170
251
185
5/8 UNC
149
110
115
85
231
170
176
130
325
240
244
180
258
190
278
205
3/4 UNF
237
175
176
130
353
260
271
200
515
380
380
280
359
265
393
290
3/4 UNC
271
200
190
140
407
300
298
220
570
420
420
310
447
330
481
355
7/8 UNF
231
170
170
125
583
430
434
320
814
600
610
450
644
475
685
505
7/8 UNC
244
180
190
140
637
470
475
350
909
670
678
500
705
520
793
585
1 UNF
339
250
258
190
868
640
651
480
1234
910
922
680
746
550
1051
775
1 UNC
380
280
285
210
976
720
732
540
1383
1020
1031
760
949
700
1220
900
1-1/8 UNF 475
350
366
270
1071
790
800
590
1749
1290
1315
970
1390
1025
1559
1150
1-1/8 UNC 542
400
407
300
1207
890
909
670
1953
1440
1464
1080
1559
1150
1797
1325
1-1/4 UNF 678
500
515
380
1519
1120
1139
840
2468
1820
1844
1360
1898
1400
2170
1600
1-1/4 UNC 746
550
570
420
1681
1240
1261
930
2726
2010
2048
1510
2170
1600
2373
1750
1-1/2 UNF 1180
870
881
650
2644
1950
1980
1460
4285
3160
3214
2370
3932
2900
4407
3250
1-1/2 UNC 1329
980
990
730
2983
2200
2224
1640
4827
3560
3621
2670
4475
3300
4949
3650
Bolt Torque Information
DO NOT
use these values if a different torque value or tightening procedure is given for a specific application. Torque values listed are for
general use only. Check tightness of fasteners periodically. Shear bolts are designed to fail under predetermined loads. Always replace shear
bolts with identical grade.
**
"Lubricated" means coated with a lubricant such as engine oil, or fasteners with phosphate and oil coatings. "Dry" means plain or zinc
plated without any lubrication.
*
Grade 2 applies for hex caps (not hex bolts) up to 6" (152 mm) long. Grade 1 applies for hex cap screws over 6" (152 mm) long, and
for all other types of bolts and screws of any length.
Summary of Contents for SD440A
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