S-90278A726 M2.5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh industrial environments
• Precise alignment and positioning enabled by the 3.5mm shoulder diameter with tight manufacturing tolerances
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Secure installation and removal using the standard 2mm hex socket drive, preventing tool slippage
• Reliable thread engagement with Class 6g metric coarse threads (0.45mm pitch) ensuring consistent fastening performance
• Environmental compliance meeting RoHS 3 and REACH regulations for safe use in regulated industries
• Optimized for automated assembly with consistent right-hand thread direction and smooth head texture

Professional Applications & Engineering Value

This precision shoulder screw delivers exceptional engineering value in applications requiring exact component alignment and rotational stability. The 18-8 stainless steel construction provides excellent corrosion resistance while maintaining Rockwell B55 hardness for durability in mechanical assemblies. The 3.5mm shoulder diameter with precise tolerances ensures perfect fitment in bushings and bearings, eliminating play in precision machinery, automation systems, and electronic enclosures. The hex socket head with 2mm drive allows for high-torque installation in confined spaces, while the Class 6g metric coarse thread (M2.5x0.45mm) provides rapid assembly without cross-threading risks. These shoulder screws are engineered to solve alignment challenges in robotics, medical devices, and optical equipment where dimensional accuracy is critical.

Specification Summary & Compliance

This M2.5 shoulder screw features precision Class 6g thread fit per metric standards with 0.45mm coarse pitch. The shoulder maintains tight dimensional control with diameter tolerance of -0.025 to 0 mm and length tolerance of 0 to 0.05 mm. 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) environmental regulations for industrial use.