National Hardware - N182-683 4003BC 3/8"-16 Coupler in Zinc Plated

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National Hardware - N182-683 4003BC 3/8"-16 Coupler in Zinc Plated Made from steel for durability. Larger couplers come with “witness holes” to confirm rods are threaded together c ompletely. For interior and exterior applications UNC coarse thread sizes Safe working load of 1,700 lbs. Show more