S-90318A990 M6 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh industrial and marine environments
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for reliable, long-term performance
• Precise alignment and smooth rotation ensured by the accurately machined 8mm shoulder with tight diameter and length tolerances
• Secure, low-profile fastening with the ultra-low socket head and 4mm hex drive, saving space and preventing stripping
• Easy installation and reliable grip from the M6x1mm coarse right-hand thread with Class 6g fit for quick assembly
• Compliance with stringent environmental regulations, being RoHS 3 and REACH compliant for safe, global industrial use
• Optimized for high-shear applications with a minimum shear strength of 35,000 psi, providing robust joint integrity

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment and durability challenges in industrial applications. The 316 Stainless Steel material offers excellent resistance to corrosion and chemicals, making it suitable for demanding environments like machinery, automotive assemblies, and marine equipment. The 20mm shoulder length with precise tolerances acts as a pivot or spacer, ensuring accurate component positioning and reducing wear. Combined with the M6x1mm coarse thread and Class 6g fit, it facilitates quick, secure fastening without cross-threading. The ultra-low socket head with a 4mm hex drive allows for compact designs and easy access in tight spaces, enhancing assembly efficiency and reliability in high-stress operations.

Specification Summary & Compliance

This shoulder screw features a Metric M6x1mm coarse thread with Class 6g tolerance for precise fit. The shoulder has an 8mm diameter with a tolerance of -0.025 to 0 mm and a 20mm length with 0 to 0.05 mm tolerance, ensuring accurate alignment. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances for safe use in various industries.