S-90278A731 M2.5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life.
• Exceptional mechanical strength with a tensile strength of 70,000 psi and Rockwell B55 hardness for reliable performance under load.
• Precise component alignment ensured by a controlled shoulder diameter (3.5mm) and length (12mm) with tight tolerances.
• Secure and efficient installation using a standard 2mm hex drive, preventing tool slippage and reducing assembly time.
• Reliable coarse thread engagement with a Class 6g M2.5x0.45mm thread for quick assembly and vibration resistance.
• Compliance with global standards, being RoHS 3 and REACH compliant for safe use in regulated industries.
• Versatile right-hand thread design compatible with standard metric components for broad application use.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to solve critical alignment and durability challenges in industrial assemblies. The 18-8 stainless steel material offers excellent resistance to oxidation and corrosion, making it suitable for applications in electronics, machinery, and automotive sectors where environmental factors are a concern. The hex socket head and 2mm drive allow for high-torque installation in confined spaces, reducing the risk of damage. The precisely machined shoulder diameter of 3.5mm and length of 12mm provide a stable pivot or spacer, minimizing part movement and wear. With its Class 6g metric thread and coarse pitch, it ensures rapid assembly and secure fastening in high-vibration environments, enhancing overall equipment reliability and reducing maintenance needs.

Specification Summary & Compliance

This M2.5 shoulder screw features a Class 6g thread with a coarse pitch of 0.45mm, ensuring dimensional accuracy per metric standards. The shoulder diameter is maintained at 3.5mm with a tolerance of -0.025 to 0 mm, and the shoulder length is 12mm with a tolerance of 0 to +0.05 mm for precise fit. Manufactured from 18-8 stainless steel, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in products requiring adherence to strict environmental and safety standards.