UNC 3/8" x Up to 7.1/2" Hex Bolt Set Screw H T 8.8 Self Colour

UNC and UNF high tensile standard is marked with an, '5'. A screw is fully threaded from underneath the head and a bolt is partially threaded (has a part-plain shank/ shoulder). UNIFIED THREAD STANDARDS Thread standards agreed upon by standard bodies of Canada, the United Kingdom, and the United States.

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