S-90278A729 M2.5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life
• Precise alignment and positioning ensured by the 10mm shoulder with tight tolerances, minimizing assembly play and vibration
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing in demanding applications
• Secure, tamper-resistant installation via the 2mm hex socket drive, providing a flush finish and high torque capability
• Consistent and reliable threading with Class 6g thread fit and M2.5x0.45mm coarse pitch for faster assembly and reduced cross-threading risk
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safety and regulatory acceptance for international markets

Professional Applications & Engineering Value

This M2.5 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material provides excellent resistance to rust and oxidation, making it suitable for electronics, automotive, and machinery exposed to moisture or chemicals. The 10mm shoulder length with precise diameter control acts as a pivot or spacer, eliminating the need for additional bushings and reducing component count. Combined with the hex socket drive and Class 6g thread fit, it ensures vibration-resistant fastening and repeatable accuracy in automated production lines. These features make it an ideal precision shoulder screw for applications requiring minimal backlash and high structural integrity.

Specification Summary & Compliance

This shoulder screw conforms to metric threading standards with M2.5 size and 0.45mm coarse pitch. The Class 6g thread fit ensures consistent engagement, while shoulder dimensions are manufactured to tight tolerances (diameter: -0.025 to 0 mm; length: 0 to 0.05 mm) for precision assembly. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances for safe use in industrial and consumer products.