Star internal tooth lock washers are essential fastening components designed to prevent loosening, widely used in machinery, furniture, electrical appliances, devices, cars, sports equipment, and industrial production of shock absorption.

Specification
Color: Black
Material: Manganese Steel
Adaptable Bolt Size: M3
Inner Diameter: 8 mm / 0.31 inch
Outer Diameter: 18 mm / 0.71 inch
Packing List: 100 x Internal Tooth Lock Washers

Advantage
Material: Made of Manganese Steel, which provides anti-rust properties, wear resistance, oxidation resistance, high strength, and long service time.
Feature: Star internal tooth lock washers feature radial teeth that create more friction and rotational resistance between the fasteners and substrate for superior locking capability.

Instruction
Easy to install, just fixed on the shaft with simple pressure or rotation during installation.

NOTE: Please confirm the size before choosing our product.