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Countersunk Head Screw ISO 10642 Strength Class 10.9 Zinc-Nickel Plated Variant-4 Wurth

BRAND: Wurth
SKU: 4123640425
$10.60 List price: $13.40
25 PCS ($0.42 per PCS)
+ −
30 Days Return Electricians Unlock Trade Access
Countersunk head screw ISO 10642 with strength class 10.9 and zinc-nickel plating is perfect for mechanical assemblies in high-corrosion environments.
Technical Specifications
  • Thread type x nominal diameter: M4
  • Length: 25 mm
  • Head diameter: 7.96 mm
  • Head height: 2.48 mm
  • Internal drive: Hexagon socket HS2.5
  • Standards: ISO 10642
  • Material: Steel
  • Property class: 10.9
  • Surface finish: Zinc nickel black
  • Corrosion protection period: 480 hours
  • RoHS-compliant: Yes
  • Head type: Countersunk head
  • Drive type: Hexagon socket
  • Thread form: Standard metric thread
  • Thread design: Full thread
  • Product class: A
  • Dimensions (H x L x W): 2.48mm x 25mm x 7.96mm
  • Weight: 0.02 kg
Key Features
  • Zinc-nickel black coating (ZNBHL) providing high corrosion resistance
  • Chromium (VI)-free coating
  • Corrosion resistance up to 480 hours for M4 diameter screws
  • Top coat with integrated lubricating particles for adjusted friction coefficient (0.09 μ–0.14 μ)
  • Thermal capacity up to 120°C
  • Full metric thread with hexagon socket drive
  • Countersunk head design for flush mounting
Professional Installation Requirements
  • Installation by qualified personnel using appropriate torque tools is recommended to ensure proper fastening and avoid damage.
Applications
  • Mechanical assemblies requiring corrosion-resistant fasteners
  • High-corrosion risk environments
  • Industrial and construction fastening applications
Standards & Compliance
  • AS/NZS 4785 – Mechanical Fasteners (relevant for fastener quality and performance)
Environmental Benefits
  • Chromium (VI)-free coating reduces environmental and health hazards
  • RoHS-compliant material ensures reduced toxic substances
Warranty Information

Warranty against manufacturing defects as per Wurth standard terms.

Available Now

Available for immediate purchase, ideal for industrial, construction, and mechanical fastening applications.

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