Lock Washer M20 Zinc Plated Steel Internal Star DIN 6798

Star Washer
Internal
Zinc Plated
Spring Steel
Dia: M20
DIN: 6798 J
A DIN 6798 Type J (also known as an internal serrated lock washer or internal star washer) is an anti-vibration fastener featuring twisted teeth on its inner circumference. The primary purpose of a DIN 6798J washer is to provide a discrete locking mechanism that combines vibration resistance with surface protection.