S-91306A322 6-32 x 3/8" ASTM F835 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with zinc-plated alloy steel construction, ensuring long-term reliability in harsh industrial environments
• Superior holding power from fully threaded design and Class 3A thread fit, providing maximum engagement and vibration resistance
• High tensile strength of 120,000 psi combined with Rockwell C39 hardness for reliable performance in demanding applications
• Easy installation and removal with 5/64" hex drive and button head design, reducing assembly time and tool slippage
• Wide compatibility with UNC coarse thread spacing and right-hand threading, ensuring perfect fit with standard components
• Regulatory compliance assurance meeting ASME B18.3, ASTM F835, RoHS 3, and REACH standards for quality and environmental safety
• Optimized load distribution through rounded head profile, minimizing surface damage and stress concentration

Professional Applications & Engineering Value

These zinc-plated alloy steel rounded head screws deliver critical performance advantages for industrial applications where vibration resistance and corrosion protection are paramount. The combination of 6-32 UNC coarse threading and Class 3A thread fit ensures superior engagement in materials prone to stripping, while the fully threaded design maximizes holding power across the entire fastener length. The button head configuration with 5/64" hex drive provides low-profile fastening solutions for confined spaces in machinery, electronics enclosures, and automotive assemblies. Engineered to withstand rigorous operating conditions, these screws maintain structural integrity under high tensile loads while the zinc plating protects against environmental degradation, making them ideal for outdoor equipment, manufacturing fixtures, and precision instruments requiring reliable, long-term fastening solutions.

Specification Summary & Compliance

This 6-32 UNC thread screw features precise Class 3A thread fit tolerances with coarse thread spacing and right-hand threading. Manufacturing complies with ASME B18.3 and ASTM F835 specifications, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, guaranteeing safe use in regulated industries and international markets.