S-90278A541 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• High tensile strength of 70,000 psi ensures secure fastening under load, reducing the risk of mechanical failure.
• Precise shoulder fit with tight tolerances for accurate alignment and reduced wear in assemblies.
• Hex socket drive design allows for easy installation and high torque application in confined spaces.
• Class 6g thread fit provides consistent, reliable engagement with mating components for vibration resistance.
• RoHS 3 and REACH compliance guarantees environmental safety and regulatory adherence for global markets.
• Rockwell B55 hardness offers excellent durability and resistance to deformation during repeated use.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address common industrial challenges such as misalignment and component wear in precision assemblies. Made from 18-8 stainless steel, it provides reliable corrosion resistance in demanding environments like machinery, automotive, and electronics. The hex socket head and right-hand coarse threads facilitate quick, secure installation, while the precise shoulder fit ensures accurate positioning and reduced play. With a 2mm shoulder length and 4mm thread length, it supports applications requiring stable pivots or spacers, enhancing overall assembly performance and longevity in industrial shoulder screw uses.

Specification Summary & Compliance

This metric shoulder screw features M3x0.5 coarse threads with a Class 6g thread fit for standard tolerance. Shoulder diameter tolerance is -0.025 to 0 mm, and shoulder length tolerance is 0 to 0.05 mm, ensuring high precision. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for various industrial and export requirements.