|
| |
|
|
SAE
Grade
|
Markings
|
Tensile
PSI
|
Material
|
5/16 |
3/8 |
7/16 |
1/2 |
9/16 |
5/8 |
3/4 |
7/8 |
|
Brass
|
 |
60,000
|
Copper 63%
Zinc 37%
|
9
|
17
|
27
|
37
|
49
|
78
|
104
|
160
|
|
Stainless
|
 |
72,000
|
AISI 303
|
10
|
18
|
28
|
40
|
54
|
80
|
117
|
180
|
|
2
|
 |
74,000
|
Low
Carbon
|
12
|
20
|
32
|
47
|
69
|
96
|
155
|
206
|
|
3
|
 |
100,000 |
Medium
Carbon
|
17
|
30
|
47
|
69
|
103
|
145
|
234
|
372
|
|
5
|
 |
120,000 |
Medium
Carbon Heat
Treated
|
19
|
33
|
54
|
78
|
114
|
154
|
257
|
382
|
|
6
|
 |
133,000 |
Medium
Carbon
Tempered
|
24
|
43
|
69
|
106
|
150
|
209
|
350
|
550
|
|
7
|
 |
133,000 |
Medium
Carbon
Alloy
|
25
|
44
|
71
|
110
|
154
|
215
|
360
|
570
|
|
8
|
 |
150,000 |
Medium
Carbon
Alloy
|
29
|
47
|
78
|
119
|
169
|
230
|
380
|
600
|
|
10
|
 |
160,000 |
High
Carbon
Case Hardened
|
33
|
54
|
84
|
125
|
180
|
250
|
400
|
640
|
Safety Notes
|
These values are given in lb-ft and apply to clean
smooth lubricated threads on NEW fasteners.
The nut and washer must have equal or greater rating
then the bolt.
Consult your manual for material type
The values are for the fastener not the assembly.
Some assembles can not with stand the maximum clamping force.
The values for fine treads are slightly higher.
Compiled By Chris Klossner
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