S-91273A848 M12 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Enhanced durability and wear resistance from the black oxide finish, which also reduces light reflection and provides a sleek appearance.
• Secure and easy installation thanks to the hex drive and knurled head, preventing tool slippage and enabling high torque application.
• Precise alignment and spacing with a 20mm shoulder length, ensuring components are held securely at the correct distance.
• High load-bearing capacity offering 70,000 psi tensile strength and 35,000 psi shear strength for demanding mechanical applications.
• Reliable thread engagement with Class 5g6g thread fit, providing consistent performance and reducing the risk of cross-threading.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This M12 shoulder screw is engineered to address common challenges in precision assembly and heavy-duty machinery. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for applications in automotive, aerospace, and industrial equipment where exposure to moisture and chemicals is a concern. The black oxide finish not only enhances corrosion protection but also minimizes galling during installation. With a 20mm shoulder length and precise Class 5g6g thread fit, this screw ensures accurate component alignment and reduces stress concentrations, preventing misalignment and premature failure. Its hex drive and knurled head design allow for efficient installation in tight spaces, improving assembly speed and reliability in high-vibration environments.

Specification Summary & Compliance

This shoulder screw features a metric M12x1.75 coarse thread with Class 5g6g thread fit for precise tolerance. The shoulder diameter is 12 mm with a tolerance of -0.04 to -0.01 mm, and shoulder length is 20 mm with a tolerance of 0 to 0.25 mm, ensuring consistent performance. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, meeting environmental and safety requirements for industrial use.