S-91273A409 M6 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh or washdown environments.
• Precise component alignment and pivot points enabled by the 20mm shoulder with tight diameter tolerance.
• High-strength performance with 70,000 PSI tensile strength and Rockwell B55 hardness for demanding applications.
• Secure, non-slip fastening thanks to the knurled hex socket head that prevents tool slippage.
• Reliable thread engagement ensured by the Class 5g6g metric thread with a coarse 1mm pitch for quick assembly.
• Compliance with strict environmental regulations, being RoHS 3 and REACH compliant for global supply chain integration.
• Versatile drive solution using a standard 3mm hex key, a common and accessible tool in industrial settings.

Professional Applications & Engineering Value

This M6 shoulder screw is engineered to solve critical alignment and wear issues in mechanical assemblies. The precision-machined 20mm shoulder acts as a dependable axle or pivot, eliminating the need for additional bushings and reducing component count. Made from 18-8 Stainless Steel, it provides excellent resistance to rust and corrosion, making it a durable choice for food processing, packaging, and outdoor machinery. The Class 5g6g thread ensures a consistent and reliable fit, while the knurled hex socket head offers superior torque transmission without cam-out. This combination of a robust shoulder and a high-strength metric thread delivers long-term reliability in high-cycle applications, reducing maintenance downtime and total cost of ownership.

Specification Summary & Compliance

This shoulder screw features an M6x1mm coarse pitch thread manufactured to Class 5g6g tolerance standards. The shoulder diameter is held to a tight tolerance of -0.04 to -0.01 mm, and the shoulder length has a tolerance of 0 to 0.25 mm. The fastener is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.