S-91280A150 M4 x 35 mm ISO 4017, DIN 933, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• High tensile strength with Class 8.8 rating and 110,000 psi ensures reliable performance under heavy loads and vibration
• Superior corrosion resistance from zinc plating extends service life in humid or outdoor industrial environments
• Coarse 0.7mm thread pitch provides faster assembly and better debris resistance compared to fine threads
• Full threading along the 35mm length allows maximum grip and adjustability in various material thicknesses
• External hex drive design enables high torque application with standard tools, reducing installation time
• Precision Class 6h thread fit ensures smooth engagement and consistent clamping force in repetitive applications
• Rockwell C21 hardness maintains thread integrity and prevents stripping during repeated use

Professional Applications & Engineering Value

This M4 hex head screw delivers exceptional engineering value for industrial assembly where vibration resistance and structural integrity are critical. The Class 8.8 steel construction provides the optimal balance between strength and ductility, preventing sudden failure in high-stress applications. The coarse metric thread with 0.7mm pitch excels in machinery, equipment frames, and structural steel connections where rapid assembly is essential. The zinc plating surface treatment creates a protective barrier against oxidation and chemical exposure, making these fully threaded screws suitable for manufacturing facilities, automotive components, and outdoor installations. The combination of 110,000 psi tensile strength and standardized dimensions per ISO 4017/DIN 933 ensures compatibility with existing metric fastener systems while reducing maintenance frequency.

Specification Summary & Compliance

This M4 x 0.7mm x 35mm hex head screw features precision Class 6h thread fit according to ISO metric standards, ensuring consistent performance across applications. Manufacturing complies with ISO 4017 and DIN 933 specifications for dimensional accuracy and mechanical properties. The product meets ISO 898-1 requirements for Class 8.8 property class and demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances above threshold limits.