S-91273A843 M12 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction and black oxide finish, ideal for harsh industrial environments.
• Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable performance under high-stress loads.
• Precise alignment and component spacing enabled by the 6mm shoulder with controlled diameter tolerance, reducing assembly errors.
• Secure, non-slip installation with a knurled socket head and 6mm hex drive, providing excellent grip for torque application.
• Consistent thread engagement due to Class 5g6g thread fit and M12x1.75mm coarse pitch, facilitating faster assembly and vibration resistance.
• Enhanced durability with Rockwell B55 hardness, maintaining structural integrity and wear resistance over repeated use.
• Compliance with global regulations including RoHS 3 and REACH, ensuring safety and environmental standards for international supply chains.

Professional Applications & Engineering Value

This M12 shoulder screw is engineered to address critical alignment and load-bearing challenges in industrial applications. The 18-8 stainless steel material, combined with a black oxide finish, provides robust protection against corrosion and chemical exposure, extending service life in demanding settings like machinery, automotive assemblies, and conveyor systems. The 6mm shoulder length with precise diameter tolerance ensures accurate component positioning, preventing misalignment and reducing wear on moving parts. The knurled socket head and hex drive allow for secure tightening in confined spaces, while the Class 5g6g thread fit and coarse pitch enhance vibration resistance and assembly efficiency. Ideal for use in precision equipment, this shoulder screw delivers reliable performance, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This metric shoulder screw features an M12x1.75mm thread with Class 5g6g thread fit and a shoulder diameter tolerance of -0.04 to -0.01 mm for high precision. Manufacturing adheres to standard metric thread specifications, ensuring consistent quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting strict environmental and safety requirements for industrial components.