S-90278A725 M2.5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
• High torque transmission via the 2 mm hex socket drive, minimizing tool slippage and enabling secure, efficient assembly.
• Precise component alignment with a smooth, accurately machined 3.5 mm shoulder diameter, reducing wear and maintaining positional accuracy.
• Excellent thread engagement with Class 6g coarse pitch (0.45 mm), facilitating quick installation and resisting vibration loosening.
• Enhanced mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications.
• Broad regulatory compliance with RoHS 3 and REACH standards, ensuring safety and environmental responsibility.
• Consistent dimensional accuracy with tight shoulder tolerances, guaranteeing reliable performance in precision assemblies.

Professional Applications & Engineering Value

This M2.5 shoulder screw is engineered to address critical alignment and durability challenges in precision machinery. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it ideal for applications in electronics, automotive, and medical devices where environmental factors are a concern. The hex socket drive allows for high-torque installation without damaging the head, while the precise shoulder fit ensures components are held securely in position, reducing misalignment and wear. With its Class 6g thread and coarse pitch, it offers reliable fastening in vibrating environments, enhancing the longevity and performance of industrial assemblies.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with an M2.5 thread size and 0.45 mm coarse pitch, conforming to Class 6g thread fit for consistent engagement. The shoulder features precise tolerances: diameter of 3.5 mm (-0.025 to 0 mm) and length of 4 mm (0 to 0.05 mm). It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial use.