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South Coast Fasteners stocks the M3 Metric Hex Keys (Short Arm), Alloy 6150, Import for fast 3-5 day shipping. It measures M3 size, Alloy 6150. The hardened finish stands up to repeated service. Built for shop, garage, and field work, it is part of our Metric Hex Keys line, stocked across industries such as Manufacturing, Automotive, and Construction. Its high tensile rating fits structural joints and heavy equipment assembly.
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