S-92949A079 2-56 x 3/8" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel and passivated finish, ideal for harsh environments and long-term reliability.
• High tensile strength of 70,000 psi ensures dependable load-bearing capacity and resistance to mechanical failure in demanding applications.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies with minimal risk of loosening.
• Hex drive design (0.050") allows for easy installation and high torque application with standard tools, reducing assembly time.
• Rounded (button) head style offers a low-profile, smooth finish that minimizes snagging and enhances safety in compact spaces.
• Full UNC coarse threading enables faster installation and better performance in materials prone to stripping or where quick disassembly is needed.
• Compliance with ASME B18.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety for global supply chain integration.

Professional Applications & Engineering Value

This 2-56 x 3/8" Rounded Head Socket Cap Screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly efficiency. Made from 18-8 Stainless Steel with a passivated finish, it provides excellent resistance to rust and chemical exposure, making it suitable for electronics, machinery, and outdoor equipment. The UNC coarse thread and Class 3A fit ensure reliable engagement in soft metals or plastics, reducing cross-threading risks. With a hex drive and rounded head, it simplifies maintenance in tight spaces while maintaining a clean aesthetic. Ideal for precision assemblies requiring high tensile strength and compliance with rigorous standards, this fastener enhances durability and reduces lifecycle costs in B2B applications.

Specification Summary & Compliance

This screw features precise Class 3A thread fit and UNC coarse threading with a diameter of 0.086" and length of 3/8". It meets ASME B18.3 manufacturing specifications for dimensional accuracy and performance. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for international markets.