S-91273A385 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life.
• High-strength performance offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable load-bearing in demanding applications.
• Precise alignment and pivot function enabled by the 5mm diameter shoulder with tight diameter tolerance, reducing wear and simplifying assembly.
• Secure and efficient installation with a 2.5mm hex socket drive and knurled head texture, providing excellent grip and preventing tool slippage.
• Consistent thread engagement due to Class 5g6g thread fit and M5x0.8mm coarse pitch, ensuring easy assembly and vibration resistance.
• Enhanced durability and hardness with Rockwell B55 rating, maintaining structural integrity under repeated use.
• Compliance with global standards including RoHS 3 and REACH, ensuring environmental safety and suitability for international markets.

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to address critical alignment and pivot needs in industrial machinery, automation systems, and precision equipment. The 18-8 stainless steel material provides excellent corrosion resistance, reducing maintenance in humid or chemically exposed settings. The 9.5mm thread length and coarse pitch facilitate quick, secure fastening, while the shoulder diameter acts as a precise locating feature, minimizing part movement and wear. With a hex socket drive and knurled head, it ensures tool engagement stability, making it ideal for high-vibration environments like robotics and conveyor systems where reliability is paramount.

Specification Summary & Compliance

This metric shoulder screw features an M5x0.8mm thread with Class 5g6g tolerance for precise fit, a shoulder diameter tolerance of -0.04 to -0.01 mm, and shoulder length tolerance of 0 to 0.25 mm. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in regulated industries.