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Star and Tooth Washers

Star and Tooth Washers

The main purpose of toothed lock washers is to permit the flow of electric current between components coated by varnish, anti-corrosive agents or similar materials. The bent ends of the washers piercing the coating when such components are joined. For such applications, the effectiveness of toothed lock washers shall be verified in accordance with the relevant DIN VDE Standards.

These are also used for locking a device and reducing the vibration. They reduce loosening by preventing unscrewing rotation of the fastening device; locking washers are usually also spring washers.

Washers are available in a wide range such as spring washers, star washers, multi-tooth washers, disc spring washers, wave washers, taper washers, safety washers etc.


Star Washers Internal Type

DIN 6797J

These are locking washers that form part of the serrated or toothed type of washers. They feature serrations or teeth that extend radially inward to bite into the bearing surface.
Their effectiveness is more evident on soft substrates such as plastics or Aluminium although they do resist rotation better than plain washers on harder surfaces. As per DIN 6797J
Available in stainless steel AISI 304 and AISI 316.

DIN 6797J Star Washers Internal SS-304 A2 B4D11 – Download Datasheet
DIN 6797J Star Washers Internal SS-316 A4 B6D11 – Download Datasheet


Star Washers External Type

DIN 6797A

These are locking washers that form part of the serrated or toothed type of washers. They feature serrations or teeth that extend radially outward to bite into the bearing surface.

Their effectiveness is more evident on soft substrates such as plastics or Aluminium although they do resist rotation better than plain washers on harder surfaces. As per DIN 6797J

Available in stainless steel AISI 304 and AISI 316.

DIN 6797A Star Washers External SS-304 A2 B4D12 – Download Datasheet
DIN 6797A Star Washers External SS-316 A4 B6D12 – Download Datasheet


Multi Tooth Washers External 

DIN 6798A

The multi tooth lock washer works best with smaller screws heads. It is useful where a good grip is required but the teeth should not be visible as they affect the appearance of the product.

​​Available in stainless steel AISI 304 and AISI 316.

DIN 6798A Multi Tooth Washers External SS-304 A2 B4D13 – Download Datasheet
DIN 6798A Multi Tooth Washers External SS-316 A4 B6D13 – Download Datasheet


Multi Tooth Washers Internal

DIN 6798J

The multi tooth lock washer works best with smaller screws heads. It is useful where a good grip is required but the teeth should not be visible as they affect the appearance of the product. The internal teeth grip the screw head and are useful in preventing a backward motion.

​​Available in stainless steel AISI 304 and AISI 316.

DIN 6798J Multi Tooth Washers Internal SS-304 A2 B4D14 – Download Datasheet
DIN 6798J Multi Tooth Washers Internal SS-316 A4 B6D14 – Download Datasheet


Multi Tooth Washers CSK

DIN 6798V

The multi tooth lock washer works best with countersunk screws heads. It is useful where a good grip is required but the teeth should not be visible as they affect the appearance of the product.

Also available in CSK type V.

Available in stainless steel AISI 304 and AISI 316 on request.

DIN 6798V Multi Tooth Washers CSK SS-304 A2 B4D15 – Download Datasheet

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