GripWasher

GripWasher NS-Disc

  • Effective protection against self-loosening of large bolted joints.
  • Use only with electrically, pneumatically or hydraulically operated torque tools.
  • Prevents the bolt or nut from rotating while tightening.
  • It enables safe and convenient tightening without requiring an additional reaction arm resp. other awkward mounts on the tool or component.
  • The reaction torque of the torque tool is supported by the NS-Dual Socket that interlocks with the gear-shaped outer contour.
  • The tightening torque is applied axially – no harmful bending moments.
  • It offers an effective and permanent protection against self-loosening.
  • Precise tightening due to low friction coefficient variation.
  • Prevention of accidents at work (e.g. pinching/crushing of the fingers, …).
  • No damage to adjacent surfaces caused by the reaction arm.
  • NS-Dual sockets adapted to easily fit powered tools from most well-known tool manufacturers.

  • The gear-shaped contour of the lower washer in combination with the NS-Dual Socket ensures a reaction-arm free tightening
  • Material: 1.1191 (C45E) with black zinc flake coating (flZnnc)
  • Hardness: 485±25 HV 0,3
  • 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 34“)
  • Other nominal diameter, materials and coatings available on request

ModelNominal diameter
GWNS_16M16
GWNS_20M20
GWNS_24M24
GWNS_30M30
GWNS_36M36
GWNS_42M42
GWNS_45M45
GWNS_48M48

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We produce standards as well as customized solutions based on your requirements!
Tell us your desired nominal diameter (M16 – 48), materials, and coatings – we‘ll take care of it!







    Technical drawing of a NS-Disc (standard version)

    GripWasher NS-Disc

    GripWasher NS-Disc

    Your individual technical dimensions:

    (if you need more than the standard version)

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    If you are unsure about the information or how to fill it out, just call us:
    +49 (0) 2843 – 9169922

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    GripWasher-NS-Disc Reaktionsarm Sicherung Drehmomentwerkzeuge Losdrehen

    Application examples