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Hex Socket Button Head Screw M4 | Zinc-Nickel Black Coating | Corrosion Resistant | @Pack of 25 | by Wurth
Hex Socket Button Head Screw M4 is designed for high corrosion risk environments, featuring a zinc-nickel black coating that provides up to 480 hours of corrosion resistance. Ideal for mechanical assemblies and industrial applications, this RoHS-compliant screw ensures secure fastening with its hexagon socket drive, making it perfect for automotive and other demanding uses.
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Product Name/Title: Hex Socket Button Head Screw M4 | Zinc-Nickel Black Coating | Corrosion Resistant | @Pack of 25 | by Wurth
Brand: Wurth
SKU: 42526440
Alternatively Known As: Hex Socket Button Head Screw M4, Zinc Nickel Black Screw M4x40, ISO 7380-1 Button Head Screw, Corrosion Resistant Hex Socket Screw
Technical Specifications
- Thread type x nominal diameter: M4
- Length: 40 mm
- Head diameter: 7.6 mm
- Head height: 2.2 mm
- Standards: ISO 7380-1
- Material: Steel
- Property class: 010.9
- Surface: Zinc nickel black
- Corrosion protection period: 480 h
- Head type: Button head
- Drive type: Hexagon socket
- Internal drive: HS2.5
- Thread type: Metric thread
- Thread form: Standard metric thread
- Thread length: 20 mm
- Product class: A
- RoHS-compliant: Yes
- Dimensions (H x L x W): 2.2mm x 40mm x 7.6mm
- Weight: 0.02 kg
Key Features
- Zinc-nickel black coating providing corrosion resistance up to 480 hours
- Chromium (VI)-free coating with integrated lubricating particles
- Thermal capacity up to 120°C
- Adjusted friction coefficient range of 0.09 μ–0.14 μ
- Complies with ISO 7380-1 standard
- Button head with hexagon socket drive (HS2.5)
Professional Installation Requirements
- Installation by a qualified technician or tradesperson is recommended to ensure proper torque and fastening integrity.
Applications
- High corrosion risk environments requiring durable fasteners
- Mechanical assemblies needing secure fastening with hexagon socket drive
- Industrial and automotive applications requiring RoHS-compliant screws
Standards & Compliance
- AS/NZS 3000 – Wiring Rules (Electrical Installation)
Environmental Benefits
- Chromium (VI)-free coating reduces environmental and health hazards
- RoHS-compliant material ensures reduced hazardous substances
Warranty Information
Wurth standard warranty against manufacturing defects applies.
Available Now
Available for immediate purchase, ideal for industrial, automotive, and mechanical fastening applications requiring corrosion-resistant screws.
