S-90910A932 M2.2 x 8 mm ASME B18.3.4M Stainless Steel Button Head Torx Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments.
• Enhanced torque transmission and strip-resistance provided by the Torx T6 drive, ensuring secure fastening and longer tool life.
• High mechanical strength and durability from 100,000 psi tensile strength and Rockwell B96 hardness for reliable performance under load.
• Optimized for precision assembly with a compact button head design (3.8 mm diameter, 1.1 mm height) that sits flush and saves space.
• Consistent and reliable thread engagement due to Class 4g6g thread fit and coarse 0.45 mm pitch, facilitating quick and easy installation.
• Full thread coverage along the 8 mm length ensures maximum grip and holding power in a wide range of materials.
• Guaranteed quality and safety compliance meeting ASME B18.3.4M standards and environmental regulations like RoHS 3 and REACH.

Professional Applications & Engineering Value

This M2.2 metric screw is engineered to address critical challenges in precision industries such as electronics, medical devices, and aerospace. Its 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to oxidation and chemical exposure, extending service life in demanding conditions. The Torx button head with T6 drive offers superior cam-out resistance, allowing for higher torque application without damaging the screw head—essential for automated assembly lines. The fully threaded design and Class 4g6g thread fit ensure secure fastening in thin materials and tight spaces, reducing the risk of loosening under vibration. These features make it an ideal industrial fastener for applications where reliability, corrosion resistance, and precise dimensional control are paramount.

Specification Summary & Compliance

This screw adheres to precise dimensional and performance criteria, including a Class 4g6g thread fit per ISO metric standards, ensuring consistent interchangeability. It is manufactured in compliance with the ASME B18.3.4M specification for metric machine screws. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming it is free of hazardous substances and safe for use in regulated markets.