S-90318A730 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications.
• Enhanced stability and precise alignment due to the 6mm shoulder diameter with a tight tolerance of -0.025 to 0 mm, ensuring minimal play in assemblies.
• High tensile and shear strength (70,000 psi tensile, 35,000 psi shear) for reliable performance under mechanical stress and vibration.
• Easy installation and space-saving design with a 2mm hex socket drive and ultra-low socket head profile, allowing access in confined spaces.
• Accurate and durable threading with Class 6g fit and coarse 0.5mm pitch, providing quick assembly and resistance to stripping.
• Consistent dimensional accuracy from precise shoulder length (6mm with 0 to 0.05 mm tolerance) and thread length (4mm), reducing assembly errors.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in various industrial sectors.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address common industrial challenges such as misalignment and corrosion in precision equipment. Made from 316 Stainless Steel, it offers excellent resistance to chemicals and moisture, making it suitable for applications in marine, chemical processing, and food machinery. The socket head with a 2mm hex drive and ultra-low profile enables easy tightening in tight spaces, while the coarse pitch metric thread (M3x0.5mm) ensures rapid and secure fastening. The precise shoulder diameter and length provide stable pivoting and alignment in assemblies like bearings, pulleys, and linkages, reducing wear and maintenance costs. Ideal for industrial shoulder bolts in high-stress environments, this fastener delivers reliable performance and longevity, supported by its high hardness (Rockwell B70) and strength metrics.

Specification Summary & Compliance

This shoulder screw features a Class 6g thread fit for precise metric threading, with a shoulder diameter tolerance of -0.025 to 0 mm and shoulder length tolerance of 0 to 0.05 mm to ensure accurate assembly. It adheres to standard metric thread specifications (M3x0.5mm coarse pitch) and is manufactured for consistent performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety standards for industrial use, providing assurance in global supply chains.