These inner hex head pipe fitting plugs are designed to seal holes in machinery,refrigeration, effectively preventing leaks of pressurized air, steam, gas, water, oil, and other fluids. They are commonly used to plug intake manifold water ports, water pump ports, engine plug holes, and various other industrial applications.SpecificationColor: Silver ToneMaterial: 304 Stainless Steel, CopperThread Size: M12 (1.25mm Pitch)Thread Length: 12 mm / 0.47 inchInternal Hex Width: 6 mm / 0.24 inchHead Diameter: 17 mm / 0.67 inchHeight: 15 mm / 0.59 inchPacking List: 4 Pcs x Pipe Plug; 4 Pcs x Copper WasherAdvantagePremium Material: The pipeline joint is constructed from durable 304 Stainless Steel, offering excellent resistance to high and low temperatures, oil, and corrosion, ensuring long-term reliability.
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