5 in stock now at Gaithersburg, MD
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The most versatile and widely used nut, it should be used with any low carbon bolt or screw that is heat-treated; heavy hex signifies larger nut casting. Grade 2H of ASTM A194/A194M. ANSI B1.1 UNC and UNF, or UN8 Class 2B thread requirement. Plain Finish, or bare metal finish which may contain a light coating of oil.
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