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Buy the 5/16" Hex Keys (Short Arm), Alloy 6150, Import, Taiwan online from South Coast Fasteners. It measures 5/16" size, Alloy 6150. The hardened finish stands up to repeated service. Used in shop, garage, and field work. These hex keys are part of our Hex Keys line, stocked across industries such as Automotive, Construction, and Electrical. Built to hold torque under demanding structural and machinery loads.
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