1/2-20 x 3-3/4 Partially Threaded Hex Cap Screws Alloy Steel Grade 5 Zinc Cr+3(300pcs/pack) Ultrasonic Welding Fastener System Keps lock nuts feature an

Keps lock nuts feature an integrated washer with small teeth that grip the surface to prevent loosening

friction-based locking mechanism that prevents loosening under vibrations

Theyre commonly used in applications where reliability is crucial

External tooth lock washers feature serrated edges that grip both the fastener and the surface

These general-use flat washers are placed under the head of a bolt or nut to create a smooth bearing surface and distribute the load over a wider area

1/2-20 x 3-3/4 Partially Threaded Hex Cap Screws Alloy Steel Grade 5 Zinc Cr+3(300pcs/pack) Ultrasonic Welding Fastener System Keps lock nuts feature an