PCS Metric Locknuts and Hex Nuts Assortment M3/4/5/6/8/10 Hex & Lock 206 Silver
Corrosion and Rust Resistant: The nylock nut is made of 304 (18-8) stainless steel A2-70, not rust in outdoor use. Strong and durable hardware nuts. Nylon Insert Design: The lock nut is designed with nylon insert to resist loosening when subjected to vibration or torque.