Fastener Info
18 years professional hardware manufacturer - JM Hardware
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18 years professional hardware manufacturer - JM Hardware
Standard for Nut GradeHardness ...
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 | ||||||
Since our establishment in 2006, JM has been adhering to the mission of creating maximum value for customers by providing differentiated services, building a stage for employees to succeed, and making a positive contribution to the society.
