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Heavy Hex Nuts ,A563 Grade A

Typical Material:   Low Carbon Steel
Material and Mechanical Properties:  ASTM A563 Grade A
Dimensions:   ASME/ANSI B18.2.2
Hardness:   HRB 68 - HRC 32
Proof Load Strength:   100,000PSI Minimum(75,000 PSI for HDG nuts)


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