Features MAIN PURPOSE: These cylindrical nuts are designed to hold two parts together, usually threaded rods, to ensure secure connection. FEMALE THREAD: These cylindrical coupling nuts have standard female thread, not easy to slip during use, stable and reliable. STAINLESS STEEL: Made of excellent 304 stainless steel, with good rustproof and durability, and can be used in various environments. WIDE APPLICATION: These connecting nuts are widely used in home improvement, machinery repair, equipment, pipeline maintenance. GLOSSY FINISH: With fine workmanship, these round connecting nuts have glossy wall, no burrs or notches, can be used with confidence. Specification: Item Type: Coupling Nut Set Material: 304 Stainless Steel Specification: M3x0.5-6 L5mm Package List:50 x Coupling Nuts Package List 50 x Coupling Nuts