S-91273A435 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Superior Corrosion Resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
• High Tensile & Shear Strength (70,000 psi tensile, 35,000 psi min shear) ensures reliable performance in demanding applications.
• Precision Thread Fit (Class 5g6g) guarantees consistent engagement and reduces assembly issues.
• Secure Hex Socket Drive with knurled head for easy, non-slip installation using standard 4 mm tools.
• Durable Shoulder Design with 45mm length and tight diameter tolerance for accurate component alignment.
• Compliance with RoHS 3 & REACH standards, meeting strict environmental and safety regulations.
• Rockwell B55 Hardness provides excellent wear resistance and long-term durability.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical alignment and load-bearing challenges in industrial assemblies. The 45mm shoulder length acts as a precise pivot or spacer, minimizing misalignment in machinery, automotive, and automation systems. Made from 18-8 stainless steel, it resists corrosion in humid or chemical-exposed settings, while the hex socket drive and knurled head ensure secure, tool-friendly installation. The coarse M8x1.25mm thread with Class 5g6g fit offers quick assembly and reliable fastening under vibration, making it a go-to for heavy-duty industrial fastening where precision and strength are non-negotiable.

Specification Summary & Compliance

The screw features a metric M8x1.25 coarse thread with Class 5g6g fit, ensuring dimensional accuracy per ISO standards. The shoulder diameter tolerance is -0.04 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm for precise component fitting. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial use without hazardous substances.