S-91306A273 10-32 x 7/16" ASTM F835 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance from zinc plating protects against rust and environmental degradation, extending service life in harsh industrial settings.
• Precise Class 3A thread fit guarantees tight tolerances and secure mating with nuts or tapped holes, minimizing vibration loosening and improving assembly integrity.
• Full threading design provides consistent engagement along the entire length, enabling versatile installation depths and enhanced load distribution.
• High hardness (Rockwell C39) offers excellent wear resistance, maintaining thread integrity during repeated use and installation.
• Convenient 1/8" hex drive allows for easy installation with standard tools, reducing assembly time and improving workflow efficiency.
• Compliance with major standards including ASME B18.3 and ASTM F835 ensures consistent quality and interoperability with other components.

Professional Applications & Engineering Value

These 10-32 UNF Class 3A zinc-plated alloy steel rounded head screws deliver critical engineering solutions where precision and durability are paramount. The fine thread spacing and Class 3A thread fit provide superior vibration resistance in machinery, automotive, and electronics assemblies, preventing costly downtime from loosened connections. The zinc-plated surface treatment offers reliable corrosion protection for outdoor equipment or humid environments, while the fully threaded design ensures maximum grip strength in varied material thicknesses. With a rounded button head profile and 1/8" hex drive, these screws facilitate quick, tool-accessible installations in confined spaces, making them ideal for maintenance-heavy industrial applications requiring repeated disassembly and reassembly.

Specification Summary & Compliance

This product maintains precision Class 3A thread tolerances per UNF specifications, with 10-32 thread size and right-hand thread direction. Manufacturing complies with ASME B18.3 and ASTM F835 standards for dimensional consistency and mechanical properties. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) adherence, ensuring safe use in regulated industries.