3/4" Male NPT Countersunk Hex Allen Head Brass Pipe Plug Seal off unused ports, pipe ends, or threaded openings with this high-quality 3/4" Male NPT Countersunk Hex Head Pipe Plug. Designed for durability and versatility, this brass plug features a countersunk hex head that allows easy installation and removal using a standard hex head allen wrench, making it ideal for tight or hard-to-reach spaces. Perfect for air systems, fuel systems, instrumentation, refrigeration, and more, this plug provides a reliable seal while resisting corrosion and wear. Features Countersunk Hex Head: Provides strong wrench engagement for secure installation and removal. Durable Brass Construction: Corrosion-resistant and suitable for a wide range of fluids and gases. Standard 3/4" Male NPT Threads: Compatible with any 3/4" NPT female threaded port. (Note: 3/4" NPT measure about 1" in diameter for reference) Multi-Purpose Use: Suitable for air, fuel, hydraulic, LP/Natural gas, and other fluid systems. (Anything non corrosive to brass.) Specifications Thread Size: 3/4" Male NPT (Note: 3/4" NPT measure about 1" in diameter for reference) Material: Brass Max Pressure: 1200 PSI Temperature Range: -65°F to 250°F Vibration Resistance: Fair Use With: Brass, bronze, copper, steel, aluminum, and iron pipe Tolerance: +/- .02 on all dimensions Standards: Meets ASA, ASME, and SAE specifications Common Applications Grease systems Fuels LP & natural gas Air systems Refrigeration Instrumentation Hydraulic lines