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national hardware 4003bc series n182-675 coupler, unc coarse thread, 5/16-18 thread, steel, zinc - Description
National Hardware 4003BC Coupler, Thread Type: UNC Coarse, Thread Size: 5/16-18, Hex Size: 0.43 in, 1000 lb Tensile Strength, Thread Length: 1 in, Steel, Zinc, Dimensions: 1 in L
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