SAE J995 Grade 8

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SAE J 995-2017 covers the mechanical and material requirements for three grades of steel nuts suitable for use in automotive and related engineering applications, in sizes 1/4 to 1 1/2 inches, inclusive, and with dimensions conforming with the requirements of the latest issue of SAE J482 or ASME B18.2.2

Additional information: https://www.sae.org/standards/content/j995_201707/