3/8-18 NPT STEEL HEX SOCKET PIPE PLUG3/8-18 NPT STEEL HEX SOCKET PIPE PLUG 701220, 100 PER BOX 3/8" Nominal Size, .675" Nominal O.D. Diameter, 18 Threads Per Inch, .520"-.480" Max/Min Length, 5/16" Hex Socket Key Size. This is a socket pipe plug, also called socket pressure plugs. They are made of a high grade alloy steel and conform to ASME B2.2 & B1.20.3 requirements. They are a 3/4" dryseal taper which has a designation of NPTF per those requirements. Brass, stainless steel, 7/8" taper and specials are all available! The 3/4" taper will extend out of the hole, the 7/8" taper are used in applications where you require a flush fitting. p;S Salesperson for details!
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