Metric 304 DIN6926 Stainless Steel/Carbon Zinc Plated Hex Flange Nylon Insert Lock Nut Self-locking Nylock Locknut GB6183.1

Good Tightening Effect: Nylon locking parts can produce a certain elastic deformation after the bolts are tightened, forming reverse pressure on the bolts, effectively preventing bolt loosening caused by vibration, impact, etc.

Easy to Use: Insert the bolt into the nut, make sure the threads are aligned, and then tighten with a wrench or socket (not included), improving your work efficiency.