S-90278A439 M2 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise component alignment ensured by the 12mm shoulder with tight +0.05mm length tolerance
• High-strength fastening with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing
• Secure installation and removal using the 1.5mm hex socket drive, minimizing tool slippage
• Accurate thread engagement provided by Class 6g thread fit and coarse 0.4mm pitch for quick assembly
• Consistent dimensional stability with 3mm shoulder diameter and controlled tolerances for repeatable performance
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

This M2 shoulder screw delivers critical engineering value in applications requiring precise shaft positioning and rotational control. The 18-8 stainless steel material provides excellent corrosion resistance, eliminating fastener degradation in moist or chemical-exposed environments. The 12mm shoulder length with minimal tolerance variation ensures exact component spacing in assemblies, while the hex socket head allows for high-torque installation in confined spaces. With its Class 6g thread fit and coarse pitch, this metric shoulder screw maintains secure fastening in vibrating equipment, making it ideal for precision machinery, automotive subsystems, and electronic enclosures where alignment integrity is paramount.

Specification Summary & Compliance

This precision shoulder screw features M2 x 0.4mm coarse thread with Class 6g tolerance, 3mm shoulder diameter (-0.025 to 0mm tolerance), and 12mm shoulder length (+0.05mm tolerance). Manufactured from 18-8 stainless steel with Rockwell B55 hardness and 70,000 psi tensile strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for restricted substance control.