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Locking Disc Spring Washer Z Shape | Spring Steel Hardened | Zinc-Flake Coated | @Pack of 25 | by Wurth

BRAND: Wurth
SKU: 401012
$22.40 List price: $28.20
25 PCS ($0.90 per PCS)
+
Locking Disc Spring Washer Z Shape is designed for securing cheese head and hexagon socket screws, featuring a spring steel hardened construction and zinc-flake coating for enhanced corrosion resistance. Ideal for mechanical assemblies requiring friction locking, this washer protects counter surfaces from damage during installation, ensuring a reliable and durable fastening solution.

Product Name/Title: Locking Disc Spring Washer Z Shape | Spring Steel Hardened | Zinc-Flake Coated | @Pack of 25 | by Wurth

Brand: Wurth

SKU: 401012

Alternatively Known As: Z Spring Washer, Locking Disc Washer, Serrated Lock Washer, Spring Lock Washer, Zinc Flake Coated Washer

Technical Specifications
  • Suitable for screw thread: M12
  • Internal diameter (d1): 12.4 mm
  • Outer diameter (d2): 18.3 mm
  • Height (h1): 2.4 mm
  • Thickness (s1): 1.8 mm
  • Material: Spring steel
  • Vickers hardness: 420-510 HV
  • Surface finish: Zinc-flake silver coating
  • Corrosion protection period: 720 hours
  • Form: Z shape
  • Suitable for: Cylinder and hexagon socket screws
  • Locking device operating principle: Serrated lock washer
  • Locking function: Embedding locking device
  • Dimensions (H x L x W): 2.4mm x 18.3mm x 18.3mm
  • Weight: 0.02 kg
Key Features
  • Type Z shape designed for cheese head and hexagon socket screws
  • Friction locking due to spring force
  • Mechanical interlock via specific surface stamping
  • Protects counter surface from damage as washer does not turn during installation
  • Minimal tightening torque distribution
Professional Installation Requirements
  • Installation should be performed by qualified personnel to ensure proper torque and locking function.
Applications
  • Suitable for securing cheese head and hexagon socket screws
  • Used in mechanical assemblies requiring friction locking and screw retention
  • Ideal for applications needing protection of counter surfaces from damage
Standards & Compliance
  • Complies with AS/NZS 4801 – Occupational Health & Safety Management Systems
Environmental Benefits
  • RoHS-compliant material ensuring reduced hazardous substances
  • Corrosion protection extends product life reducing waste
Warranty Information

Standard manufacturer warranty applies. Please refer to Wurth warranty policy for details.

Available Now

Wurth Locking Disc Spring Washer Z Shape is available for immediate purchase, ideal for industrial and mechanical fastening applications.