Specifications
- Effective protection against self-loosening of large bolted joints.
- No need for additional reaction arms or mounts.
- Prevention of accidents at work (e.g. pinching/crushing of the fingers, …).
- No damage to adjacent surfaces caused by the reaction arm.
- Use only with electrically, pneumatically or hydraulically operated torque tools.
- Prevents the screw/nut from turning when tightening.
- The reaction torque of the torque tool is supported by a special dual socket that interlocks with the gear-shaped outer contour of the GripWasher NS-Disc.
- The tightening torque is applied axially – no harmful bending moments.
- Precise tightening due to low friction coefficient variation.
- Dual sockets adapted to easily fit powered tools from most well-known tool manufacturers.
- Immediate, effective locking even at low preload forces.
- Ideal for installation in confined spaces.
- Tightening and loosening possible with access from only one side.
- Friction based positive locking.Op wrijving gebaseerde positieve vergrendeling.
Technical data
- Anti-loosening device certified according to DIN 25201
- The gear-shaped contour of the lower washer in combination with a special dual socket ensures a reaction-arm free tightening
- Material: 1.1191 (C45E) with black zinc flake coating (flZnnc)
- Hardness: 485±25 HV0,3
- Corrosion resistance: min. 1,000 h in NSS-test according to ISO 9227
- Suitable for high-strength bolts and nuts up to strength class 12.9 / 12
- Bending moment and reaction arm free tightening method
- Available dimensions: M16 – M48 (5/8“- 1 ¾“)
- Other nominal sizes, materials and coatings available on request
More information about our NS-Disc & BS-Disc
