B & K Industries Square Head Plug 2-1/2 in.

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Manufactured in accordance with accepted standards and conform to the specifications shown below. The latest issue of any specification shall constitute the authority. Standard Mal leable Iron Fittings. Fed. Spec. WW-P-521E. Amer. Std. A.S.A. B-16.3 (Dimensions) A.S.A. B-2.1 (Pipe Threads) Ferrous Plugs, Bushings and Locknuts A.S.A. B16.14 Fed. Spec. WW-P-471. A.S.A. B-2.1 (Pipe Threads). Show more