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(100 pcs) 3/8', Threaded Screw Pipe Plugs, 3/4' Taper, Dry Seal, Hex Socket Drive, Alloy Steel, Made in U.S.A.: Industrial & Scientific. (100 pcs) 3/8", Threaded Screw Pipe Plugs, 3/4" Taper, Dry Seal, Hex Socket Drive, Alloy Steel, Made in U.S.A.: Industrial & Scientific. Threaded pipe plugs are designed to close the ends of internally threaded pipes and fittings. 。 An internal hex socket drive is also known as an Allen drive. 。 Alloy steel fasteners are significantly stronger than standard low carbon steel fasteners. 。 Diameter (Nominal): 3/8"。Category: Threaded Screw Pipe Plugs。System of Measurement: US Units。Brand: Aspen Fasteners®。Form and Design: Dry Seal。Drive Style: Hex Socket Drive。Threading: 3/4" Taper。Thread Direction: Right-Hand Thread。Material: Steel。Material Grade: Alloy Steel。Coating: Oxidized。Coating Color: Black。Hardness Rating: Rockwell C36-C43。Origin: Made in U.S.A.。Standards and Specifications: ANSI B1.20.3。NB: Product images are copyrighted artistic representations which may not reflect the product's exact appearance, proportions and/or relative dimensions.。 。 。 。