S-90833A129 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Black oxide finish provides reliable protection against rust and wear, extending service life in harsh industrial environments.
• High Tensile Strength for Demanding Loads: Made from alloy steel with 140,000 psi tensile strength and Rockwell C30 hardness, ensuring reliable performance under high-stress conditions.
• Precision Shoulder for Accurate Alignment: 16mm shoulder length with tight tolerances enables stable component positioning and reduces misalignment in assemblies.
• Secure, Low-Profile Installation: Low socket head design with knurled texture and 5mm hex drive allows for easy, space-saving tightening and improved grip during assembly.
• Coarse Thread for Quick Assembly: M8x1.25 coarse thread with Class 5g6g fit ensures fast, secure engagement and reduces the risk of cross-threading in time-sensitive operations.
• Compliance with Environmental Standards: RoHS 3 and REACH compliant, meeting strict regulations for safe use in various industrial and export markets.
• Versatile Metric Sizing: Metric thread (M8) and dimensions ensure compatibility with international equipment and streamline global supply chain integration.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address common industrial challenges such as component misalignment and vibration-induced loosening. The alloy steel construction, combined with a black oxide finish, offers superior resistance to corrosion and mechanical stress, making it ideal for heavy-duty applications in machinery, automotive assemblies, and precision equipment. The low profile socket head with knurling ensures secure tool engagement and space efficiency, while the 16mm shoulder provides a stable bearing surface that maintains alignment in rotating parts or linkages. By utilizing a coarse metric thread (M8x1.25), it enables rapid installation and disassembly, reducing downtime in production lines. This screw is a reliable choice for engineers seeking durability, compliance, and precision in industrial fasteners.

Specification Summary & Compliance

The screw features precise dimensions, including a shoulder diameter tolerance of -0.072 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm, ensuring consistent fit in precision applications. Threads conform to Class 5g6g fit standards for reliable engagement, and the product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its suitability for environmentally conscious and regulated industries.