S-91273A502 M20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and reducing maintenance costs.
• Enhanced assembly precision from the Class 5g6g thread fit, ensuring reliable mating with nuts and threaded holes.
• High mechanical strength offering 70,000 PSI tensile strength and 35,000 PSI minimum shear strength for demanding applications.
• Secure and efficient driving with the 10 mm hex socket drive and knurled head, preventing tool slippage and speeding up installation.
• Accurate component alignment due to the 15 mm shoulder with tight diameter tolerance, minimizing part movement and wear.
• Robust durability with Rockwell B55 hardness, providing excellent wear resistance and long service life.
• Global compliance assurance meeting RoHS 3 and REACH regulations for safe and sustainable use in various industries.

Professional Applications & Engineering Value

This M20 shoulder screw is engineered to address critical alignment and fastening challenges in industrial machinery. The 18-8 stainless steel material resists corrosion, making it suitable for applications exposed to moisture or chemicals, while the 15 mm shoulder length with precise tolerances ensures accurate positioning of moving parts like gears and pulleys, reducing vibration and misalignment. The hex socket drive and knurled head facilitate easy installation in tight spaces, enhancing assembly efficiency. Commonly used in automation, automotive, and manufacturing equipment, this metric shoulder screw provides reliable performance under high-stress conditions, thanks to its coarse pitch thread and high tensile strength, ensuring long-term operational stability.

Specification Summary & Compliance

This shoulder screw features a Class 5g6g thread fit per metric standards, with a shoulder diameter tolerance of -0.04 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm for high precision. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and adherence to international manufacturing norms.