May 08, 2025
Standard for Nut |
Grade |
Hardness |
Dimensional style of nut |
Nominal nut size |
Proof Load Stress ksi |
Head Marking |
|
in. |
Non-Zinc coated Nuts |
Zinc coated Nuts |
|||||
SAE J995 |
2 |
HRC32 max |
hex |
1/4 to 1-1/2 |
90 |
90 |
|
5 |
HRC32 max |
hex |
1/4 to 1 |
120 |
120 |
|
|
1-1/8 to 1-1/2 |
105 |
105 |
|||||
8 |
24-32HRC |
hex |
1/4 to 5/8 |
150 |
150 |
|
|
26-34HRC |
3/4 to 1 |
||||||
26-36HRC |
1-1/8 to 1-1/2 |
October 26, 2016
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