Description The internal thread hex lock nut set is an essential component for securing mechanical parts, especially in water tank connections. These flange hex lock nuts ensure a tight and secure fit, preventing leaks and maintaining stability. Ideal for plumbing and mechanical applications, these brass lock nuts are designed to withstand high pressure and provide long-lasting durability. Features - Color: Golden 2 -Material:Brass - Size: 3.10X2.00X0.60cm/1.22X0.79X0.24in -Inner diameter: 20 mm -Note: 1/2in screw -Thread type: internal thread ensures a tighter seal compared to straight threads, making it ideal for highpressure applications -Reliable design: they have a good fixing effect, are stable and reliable, and can provide convenience for your work -Ease of installation: the fastening nut design allows for easier and more secure installation or replacement, reducing maintenance time -Reliable material: these nuts offer high strength and excellent resistance to high temperatures, ensuring longlasting durability -Versatile applications: suitable for sealing joints and pipes, these nuts are widely used in outdoor gardens, water tanks, washing machines, air conditioners, water heaters, and storage roomsPackage list: 6 x hexagonal lock nuts