Toothed Lock Washers

A toothed lock washer serves as a locking element in a bolted joint. It has a round shape with a row of teeth located along the outer or inner contour of the part. It is used together with threaded fasteners: bolts, screws and nuts of matching sizes, made from identical raw material.

During tightening, the washer’s teeth bite into the surface of the materials being joined, preventing the fastening assembly from spontaneously loosening and unscrewing. This increases the strength and reliability of the joint and extends its service life.

Standards and materials for toothed lock washers

Lock washers with external teeth comply with the technical and dimensional requirements of Russian GOST 10463-81 in terms of parameters. Parts with teeth placed along the inner perimeter are governed by GOST 10462-81. The German standard covers similar fasteners as follows:

• DIN 6798 A covers flat toothed lock washers with external serration, made with high precision of geometry and tooth cutting.
• DIN 6798 J covers flat locking washers with teeth along the inner contour. Joints using this type of fastener remain reliable under high-intensity vibration loads.
• Parts conforming to DIN 6798 V have a convex shape with teeth along the outer diameter. Their use increases the clamping pressure during installation, ensuring reliable fixation of the fastening assembly.

Toothed lock washers are made from spring steel, carbon and stainless alloys, and bronze. Parts requiring corrosion protection undergo electrolytic zinc plating.

Toothed lock washers DIN 6798, GOST 10463, GOST 10462 are used in construction, machine building, automotive and agricultural machinery assembly, and the furniture industry — everywhere a strong joint is required. The key is to select the correct size, grade and material.

FLOK’s offer

FLOK supplies a wide size range of toothed lock washers.

The fastener products fully comply with the requirements of the standards in all parameters. Toothed lock washers DIN 6798, GOST 10463, GOST 10462 are supplied in wholesale lots of any volume with delivery across the territory of the Russian Federation.