S-91273A408 M6 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and long-term reliability.
• Precise alignment and secure component positioning thanks to the 6mm shoulder diameter with tight tolerance, minimizing play in assemblies.
• High-strength performance offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding mechanical applications.
• Secure, non-slip fastening enabled by the knurled hex socket head and 3mm hex drive, allowing for high torque application without stripping.
• Consistent and reliable thread engagement with Class 5g6g metric coarse thread (M6x1mm), ensuring easy assembly and vibration resistance.
• Durable and wear-resistant material hardened to Rockwell B55, maintaining integrity under repeated use and stress.
• Compliance with environmental and safety standards, being RoHS 3 and REACH compliant for use in regulated industries.

Professional Applications & Engineering Value

This M6 shoulder screw is engineered to address critical alignment and load-bearing challenges in precision industrial applications. The 18-8 stainless steel provides excellent resistance to corrosion and oxidation, making it suitable for machinery, automotive, and electronic assemblies exposed to moisture or chemicals. The 6mm shoulder diameter with minimal tolerance ensures components are precisely located and rotate freely without binding, reducing wear and maintenance. The hex socket head with knurled texture allows for secure tool grip, facilitating quick installation and removal in confined spaces. With a coarse thread (M6x1mm) and Class 5g6g thread fit, it offers reliable fastening in materials where fine threads might strip, enhancing assembly efficiency and product longevity in high-vibration environments like motors and conveyor systems.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with an M6x1mm coarse right-hand thread and Class 5g6g thread fit for consistent dimensional accuracy. The shoulder features a diameter of 6 mm (tolerance: -0.04 to -0.01 mm) and length of 18 mm (tolerance: 0 to 0.25 mm), ensuring precise fits. Manufactured from 18-8 stainless steel with a hardness of Rockwell B55, it meets performance benchmarks including 70,000 psi tensile strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable industrial use.