[100 PKG] Lock Washers Internal Tooth DIN 6797J M4

Lock Washers Internal Tooth DIN 6797J M4 are precision-made fasteners designed to prevent loosening in high-vibration assemblies. The internal-tooth design bites into the mating surface to create a secure locking action for DIN 6797J applications, specifically sized for M4 bolts.

• DIN 6797J compliant internal tooth lock washer for reliable performance.
• Internal tooth design helps resist loosening under vibration and dynamic loads.
• Size: M4 for compatible M4 fasteners.
• Locking action improves joint security without adding preload.
• Easy to install with standard tools in a wide range of mechanical assemblies.

Ideal for automotive, machinery, electronics, and general hardware applications where secure fastening is required. Use with matching nuts and bolts to maintain clamping force and prevent rotation under service conditions.

Key benefits: enhanced vibration resistance, maintenance of torque, and simple installation with no special equipment.