S-90833A133 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional durability and corrosion resistance with a black oxide finish on alloy steel, ideal for harsh industrial environments.
• High tensile strength of 140,000 psi ensures reliable performance under heavy loads and mechanical stress.
• Precise Class 5g6g thread fit guarantees smooth assembly and secure fastening in demanding applications.
• Knurled low-profile socket head with 5mm hex drive provides superior grip and easy installation in confined spaces.
• Accurate 30mm shoulder length with tight tolerances enables precise component alignment and rotational control.
• Rockwell C30 hardness offers excellent wear resistance for long-term operational reliability.
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and global market suitability.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered from alloy steel with a black oxide finish to combat corrosion in industrial settings such as machinery assembly, automotive systems, and precision equipment. The coarse 1.25mm thread pitch and Class 5g6g thread fit facilitate quick, secure installations, reducing assembly time and minimizing loosening risks. The knurled socket head and 5mm hex drive allow for efficient torque application, even in tight spaces, while the precisely machined shoulder ensures accurate alignment and smooth rotation in pivoting or guiding mechanisms. With a 140,000 psi tensile strength and Rockwell C30 hardness, it delivers robust performance in high-stress applications, enhancing equipment longevity and reducing maintenance needs.

Specification Summary & Compliance

This metric shoulder screw features an M8 x 1.25mm coarse thread with Class 5g6g thread fit for precise engagement. The shoulder diameter is 10 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 30 mm with a tolerance of 0 to 0.25 mm, ensuring dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, meeting environmental and safety requirements for industrial use.