S-92949A327 4-48 x 1/4" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction and passivated finish, ideal for harsh environments.
• Exceptional thread precision with Class 3A UNF fine threads ensuring reliable, vibration-resistant connections.
• High tensile strength of 70,000 psi provides dependable load-bearing capacity for demanding applications.
• Convenient hex drive (1/16") allows for easy installation and removal with standard tools.
• Low-profile rounded button head offers a smooth finish and reduces snagging in assembled components.
• Full threading along the 1/4" length ensures maximum grip and uniform stress distribution.
• Compliance with ASME B18.3 and environmental standards (RoHS/REACH) guarantees quality and safety for industrial use.

Professional Applications & Engineering Value

This 4-48 UNF Class 3A Rounded Head Screw is engineered from 18-8 Stainless Steel with a passivated finish to combat corrosion in challenging settings like electronics, automotive, and machinery assembly. The fine UNF thread and Class 3A fit deliver tight tolerances, minimizing loosening under vibration and enhancing joint integrity. Its hex drive and button head design facilitate quick installation in confined spaces, while the fully threaded 1/4" length ensures consistent clamping force. Ideal for precision applications requiring durability and compliance, it addresses common issues of fastener failure and environmental degradation.

Specification Summary & Compliance

This screw features a 4-48 UNF thread with Class 3A precision, a length of 1/4", and full threading for optimal performance. It meets ASME B18.3 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe and reliable use in industrial applications.