Tooth Lock Washers
Tooth lock washers (electrical contact washers) are designed to prevent bolted joints from loosening using friction. Similarly to serrated washers, tooth lock washers feature teeth-like-serrations either internally or externally. They are installed between the bolt head/nut and the mating surface, and the bolted joint is then tightened in the same way as an unsecured nut. When the bolted joint is tightened, these teeth bite into the mating surface.
These washers work best with soft surfaces as hard surfaces will flatten the teeth – preventing them from successfully biting into the surface and securing the joint. Navnaagar Industry are manufacturers and exporters of Tooth Lock Washers in India.
Dimensions for DIN6798j Internal Shakeproof
Dimensions for DIN6797j Internal Shakeproof
Dimensions for DIN6798a External Shakeproof
Dimensions for DIN6797a External Shakeproof
| Bolt Size | Inside Diameter | Outside Diameter | Thickness |
|---|---|---|---|
| M2 | 2.2mm | 4.50mm | 0.3mm |
| M3 | 3.2mm | 6.0mm | 0.4mm |
| M3.5 | 3.7mm | 7.0mm | 0.5mm |
| M4 | 4.3mm | 8.0mm | 0.5mm |
| M5 | 5.3mm | 10.0mm | 0.6mm |
| M6 | 6.4mm | 11.0mm | 0.7mm |
| M8 | 8.4mm | 15.0mm | 0.8mm |
| M10 | 10.5mm | 18.0mm | 0.9mm |
| M12 | 12.5mm | 20.5mm | 1.0mm |
| M14 | 15.0mm | 24.0mm | 1.1mm |
| M16 | 17.0mm | 26.0mm | 1.2mm |
| M18 | 19.0mm | 30.0mm | 1.4mm |
| M20 | 21.0mm | 33.0mm | 1.4mm |
| M22 | 23.0mm | 36.0mm | 1.5mm |
| M24 | 25.0mm | 38.0mm | 1.5mm |
| M27 | 28.0m | 44.0mm | 1.6mm |
| M30 | 31.0mm | 48.0mm | 1.6mm |
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