Metric Course pitch Wedge Locking Nut steel Class-8 Delta Protekt KL100 Silver

SKU: 2712

Wedge Locking Nut steel

Class-8 Delta Protekt KL100 Silver

Metric Course pitch


M6          9.20        14.20        10.00
M8        12.20        17.90        13.00
M10        15.20        21.80        16.00
M12        17.20        26.00        18.00
M16        21.20        34.50        24.00


Class-8 Delta Protekt KL100 Silver

Metric Course pitch

Wedge Lock Nuts

The Wedge Lock Nut provides a high-quality, user-friendly bolt securing system for the most demanding of applications and is ideal for repeated use. The captive and rotary combination of the nut and the original Wedge Lock Washers makes securing your bolted joints more efficient, effective and easier even under the most extreme vibrations and dynamic loads.


Design of the Wedge Lock Nut

The Wedge Lock Nut is supplied pre-assembled. The nut and the Wedge Lock Washers are combined in a captive and rotary way, ensuring the Wedge Lock Washers and the nut are fixed permanently in the correct position with the wedge lock washers securing your bolted joint using the proven principle without loss of quality or function.



  • The one-piece design eliminates the risk of misuse.
  • Minimized risk of operating and production breakdowns caused by faulty bolted connections
  • Easy handling especially in hard to reach locations
  • Fixed permanently in the correct position
  • Reduction of assembly time and effort
  • Reduced complexity of the component due to less individual parts
  • Easy, safe and fast installation even for non-specialist users
  • Can be re-used without any reduction in function or quality

Technical Specifications

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1. Pre-assembled locking system

  • Wedge Lock Nut is supplied pre-assembled and provides the user with the clear benefit of always being in the correct locking position – particularly important if being installed and removed repeatedly
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2. The difference in hardness: Nut > Material

  • The hardness of the mating surfaces should not exceed that of the Wedge Lock Nut face (class 8).
  • Steel (through hardened) 485 ±25 HV0.3
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3. Difference in angles

  • The wedge angle between the Wedge Lock Washers is greater than the pitch of the bolt thread
  • This angle means the expansion in thickness of the Wedge Lock Washers is greater than the possible longitudinal movement of the bolt along the thread
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4. Difference in friction

  • The wedge-shaped surfaces have a considerably lower friction coefficient than the toothed outside of the washers
  • Loosening due to dynamic loads causes movement between the two washers in the region of the wedged shaped surfaces
Wedge Lock Nut Image 5

5. Difference in preload

  • An expansion in thickness of the Wedge Lock Washers as a result of loosening leads to an increase in the clamping force
  • This causes an increase in the preload compared to the static state and thus causes the bolt to self-lock.
Additional Info
Additional Info
Standard NumberNo
Second StandardNo
American Generic Brand Term STIFF,PREVAILINGTORQUE

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