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Countersunk Screw Hexalobular Head 25mm Wurth

BRAND: Wurth
SKU: 40126425
$41.30 List price: $51.90
100 PCS ($0.41 per PCS)
+
Wurth Countersunk Screw ISO Hexalobular Head features M4, 25mm length and 8.4mm head diameter. Chromium (VI)-free coating for environmental safety.
Technical Specifications
  • Thread type x nominal diameter: M4
  • Length: 25 mm
  • Head diameter: 8.4 mm
  • Head height: 2.7 mm
  • Standards: ISO 14581
  • Material: Steel
  • Property class: 08.8
  • Surface: Zinc nickel black
  • RoHS-compliant: Yes
  • Corrosion protection period: 480 h
  • Head type: Countersunk head
  • Drive type: Internal hexalobular
  • Internal drive size: TX20
  • Thread type: Metric thread
  • Pitch: 0.7 mm
  • Thread form: Standard metric thread
  • Product class: A
  • Dimensions (H x L x W): 2.7mm x 25mm x 8.4mm
  • Weight: 0.02 kg
Key Features
  • Zinc-nickel black coating (ZNBHL) providing high corrosion resistance
  • Chromium (VI)-free coating for environmental safety
  • Corrosion resistance up to 480 hours for M4 diameter screws
  • Integrated lubricating particles in top coat for adjusted friction coefficient (0.09μ - 0.14μ)
  • Thermal capacity up to 120°C
  • Even coating distribution with functional and decorative finish
Professional Installation Requirements
  • Installation by qualified personnel recommended to ensure proper torque and fastening integrity.
Applications
  • Mechanical assemblies requiring corrosion-resistant fasteners
  • Automotive and industrial equipment exposed to harsh environments
  • High-corrosion risk applications needing durable fastening solutions
Standards & Compliance
  • Complies with AS/NZS 4801 – Occupational Health & Safety Management Systems
Environmental Benefits
  • Chromium (VI)-free coating reduces environmental and health hazards
  • RoHS-compliant material ensures reduced toxic substance use
Warranty Information

Warranty against manufacturing defects as per Wurth standard terms and conditions.

Available Now

Available for immediate purchase, ideal for industrial and mechanical fastening applications requiring corrosion resistance.