Smith-Cooper 1 in. MPT X 1 in. D MPT Stainless Steel Square Head Plug

SCI Stainless Steel Fittings & Nippples are a cost effective replacement for brass. They offer more Corrosion, Heat, and Pressure resistance than Brass and have always been Lead Free. Stainless Steel doesn't cause electrolysis so you can use it with any other metal. Marine, Automotive, Agricultural, Irrigation, and Plumbing... the better choice is SCI Stainless Steel.