S-91306A320 6-32 x 1/4" ASTM F835 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength (120,000 psi) ensures reliable performance in demanding industrial applications
• Zinc-plated alloy steel construction provides superior corrosion resistance for extended service life
• Class 3A thread fit with UNC coarse threading delivers precise, secure fastening with reduced cross-threading risk
• Fully threaded design maximizes grip and holding power across the entire fastener length
• Rockwell C39 hardness rating maintains structural integrity under high stress conditions
• Hex drive (5/64") with rounded button head enables easy installation and creates a low-profile finished appearance
• Comprehensive compliance certifications guarantee quality and environmental safety for global applications

Professional Applications & Engineering Value

These 6-32 UNC thread rounded head screws deliver critical engineering advantages in industrial fastening scenarios where vibration resistance and long-term reliability are paramount. The zinc-plated alloy steel construction prevents corrosion in harsh environments, while the coarse thread spacing and Class 3A thread fit provide superior engagement in both metallic and composite materials. The combination of 120,000 psi tensile strength and Rockwell C39 hardness ensures these button head screws maintain clamping force under dynamic loads, making them ideal for machinery assembly, electrical enclosures, and automotive components where industrial-grade fastening solutions are required.

Specification Summary & Compliance

This 1/4" length screw features precision Class 3A thread fit with UNC coarse thread spacing and right-hand threading. Manufactured to exacting standards including ASME B18.3 and ASTM F835 specifications. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global markets.