S-91255A133 6-32 x 7/16" ASME B18.3 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with Black-Oxide finish on Alloy Steel, extending service life in demanding environments.
• Superior thread engagement and reliability due to Class 3A fit and UNC coarse thread, reducing the risk of cross-threading and ensuring secure fastening.
• High mechanical strength with 120,000 psi tensile strength and Rockwell C39 hardness, providing dependable performance under high-stress conditions.
• Efficient installation and removal with 5/64" Hex drive, allowing for quick assembly with standard tools and minimizing downtime.
• Versatile low-profile design featuring a rounded button head, ideal for applications where clearance is limited without compromising on holding power.
• Full threading for maximum grip along the entire 7/16" length, ensuring uniform load distribution and enhanced joint integrity.
• Compliance with industry standards including ASME B18.3 and ASTM F835, guaranteeing consistent quality and interchangeability.

Professional Applications & Engineering Value

This 6-32 UNC thread screw is engineered to address common industrial challenges such as vibration loosening and environmental degradation. The Black-Oxide Alloy Steel construction offers excellent resistance to rust and wear, making it suitable for automotive, machinery, and electronic enclosures where durability is critical. The coarse thread spacing and Class 3A fit provide superior holding power in softer materials or where frequent disassembly is required, reducing maintenance costs. Its rounded head with Hex drive ensures easy access in confined spaces, streamlining assembly processes. Ideal for securing components in high-vibration environments, this screw delivers reliable performance while meeting rigorous industrial standards for safety and efficiency.

Specification Summary & Compliance

This product adheres to precise dimensional tolerances with a Class 3A thread fit and UNC coarse thread specifications, ensuring consistent performance. It conforms to ASME B18.3 and ASTM F835 manufacturing standards for reliability. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible and safe usage in global markets.