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1/4' Brass Hex Head Plug NPT Adapter for Pipe Fittings Pipe

1630200C (HHP1M) Dixon Valve Brass Hex Head Plug - 1/8 NPT Thread Ada — HoseWarehouse

Brass Plug 1-1/4＂1-1/2＂2＂bsp Female Male Threaded Copper Pipe Hex Head Stopper End Cap Plug Plumbing Fitting Connector Adapter - Pipe Fittings - AliExpress

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New Brass Fitting Brass Hex Plug Pipe Fitting Internal Hex - Temu

3152X4 by Danfoss, Pipe Adapter, Hex Head Plug

Fastenal Industrial Supplies, OEM Fasteners, Safety Products & More

Brass Hex-Head Plug 1/2

1/8 NPT Male Plug Brass Hex Head Pipe Fitting 5pcs : Industrial & Scientific