S-90278A724 M2.2 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
• Enhanced torque transmission via the 2 mm hex socket drive, minimizing slippage and tool wear.
• Precise component alignment ensured by the 3 mm diameter shoulder with tight tolerance fit.
• Reliable thread engagement with Class 6g coarse pitch (0.45 mm) for faster assembly and vibration resistance.
• High mechanical strength offering 70,000 psi tensile and Rockwell B55 hardness for durable performance.
• Stable unthreaded shoulder section (8 mm length) providing consistent pivot or bearing surfaces.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe usage in global markets.

Professional Applications & Engineering Value

This M2.2 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material provides excellent resistance to rust and oxidation, making it suitable for electronics, machinery, and automotive components exposed to moisture or chemicals. The hex socket drive allows high torque application without damaging the head, while the coarse pitch thread ensures quick and secure fastening in materials where fine threads may strip. The precisely machined 3 mm shoulder diameter and 8 mm shoulder length act as a reliable axle or spacer, maintaining exact part positioning and reducing wear in rotating mechanisms. Its right-hand thread design and Class 6g thread fit guarantee consistent performance in automated production lines, enhancing assembly efficiency and product lifespan.

Specification Summary & Compliance

The screw features a metric thread size M2.2 x 0.45 mm with Class 6g thread fit per ISO standards, ensuring dimensional accuracy. Shoulder dimensions include a diameter of 3 mm (tolerance: -0.025 to 0 mm) and length of 8 mm (tolerance: 0 to 0.05 mm) for precise fit. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of restricted hazardous substances. Manufactured to meet industrial requirements for strength and reliability.