S-90270A661 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise component alignment enabled by the 12mm shoulder with tight tolerances for accurate positioning
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-lasting fastening
• Easy installation and removal using standard socket drive tools, reducing assembly time and labor costs
• Consistent thread engagement with Class 6g thread fit and coarse 0.7mm pitch for quick, secure fastening in various materials
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in global markets
• Durable performance in demanding applications due to precise manufacturing and high-quality material properties

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, making it suitable for automotive, electronics, and machinery applications exposed to moisture or chemicals. The 12mm shoulder length with precise tolerances ensures accurate component positioning, reducing wear and misalignment in rotating parts or guided movements. With a socket drive design, it allows for high-torque installation without stripping, while the Class 6g thread fit and coarse pitch enable rapid assembly in plastics and metals. This combination of features minimizes downtime and maintenance, delivering reliable performance in automated systems and precision equipment.

Specification Summary & Compliance

This shoulder screw adheres to Metric system standards with an M4 x 0.7mm coarse thread and Class 6g thread fit for consistent dimensional accuracy. The shoulder diameter tolerance is -0.025 to 0 mm, and shoulder length tolerance is 0 to 0.05 mm, ensuring precise assembly. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances for safe industrial use.