S-91273A825 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
• Enhanced durability and wear resistance from the black oxide finish, reducing maintenance needs.
• Precise alignment and reduced vibration thanks to the 35mm shoulder with tight length tolerance (±0.25mm).
• High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications.
• Secure and easy installation using a standard 4 mm hex drive and knurled head for improved grip.
• Reliable thread engagement with Class 5g6g fit and coarse M8x1.25mm thread for quick assembly.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address common industrial challenges such as misalignment, component wear, and corrosion in machinery. Made from 18-8 stainless steel with a black oxide finish, it offers excellent resistance to rust and abrasion, extending service life in applications like precision assemblies, rotating shafts, and conveyor systems. The 35mm shoulder length with minimal tolerance ensures accurate positioning of parts, reducing stress and vibration. The coarse metric thread and hex drive facilitate quick, secure fastening, making it a reliable choice for industrial shoulder screws in automotive, manufacturing, and automation sectors where strength and precision are critical.

Specification Summary & Compliance

This shoulder screw features a Class 5g6g thread fit with M8x1.25mm coarse thread for standard metric applications. Shoulder diameter tolerance is -0.04 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring high dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial use without hazardous substances.