S-90278A316 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Corrosion-resistant performance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise shoulder fit ensures accurate alignment and reduced wear in assembly applications
• High tensile strength of 70,000 psi provides reliable load-bearing capacity for demanding mechanical uses
• Hex socket drive design allows for secure, high-torque installation without slippage
• Class 6g thread fit guarantees consistent mating with nuts and threaded holes for vibration resistance
• Compliance with RoHS 3 and REACH standards ensures environmental safety and regulatory acceptance
• Rockwell B55 hardness offers excellent durability and resistance to deformation under stress

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address common industrial challenges such as misalignment and component wear in machinery. The 18-8 stainless steel material provides superior corrosion resistance, making it suitable for applications in humid or chemically exposed settings like automotive assemblies, electronic enclosures, and precision instruments. The hex socket drive enables efficient installation in confined spaces, while the 4mm thread length and 8mm shoulder diameter ensure stable positioning for rotating parts, reducing maintenance needs and enhancing operational longevity. Its coarse thread and right-hand thread direction facilitate quick assembly, streamlining production processes.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with precise dimensions: thread size M3x0.5, thread fit Class 6g, shoulder diameter tolerance of -0.025 to 0 mm, and shoulder length tolerance of 0 to 0.05 mm. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets international environmental and safety requirements for industrial components.