S-91263A506 6-32 x 5/16" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional holding power with 130,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance provided by zinc plating, extending service life in harsh industrial environments
• Precision Class 3A thread fit ensures secure, vibration-resistant connections with minimal risk of loosening
• Full threading design maximizes grip strength and distributes load evenly across the entire fastener length
• Optimized 82° countersink angle allows for flush mounting and clean, professional-looking installations
• Hex drive compatibility with 5/64" drive size enables efficient installation and removal with standard tools
• Rockwell C39 hardness provides excellent durability and resistance to wear during repeated use

Professional Applications & Engineering Value

These 6-32 UNC flat head screws deliver exceptional engineering value for industrial applications requiring reliable, high-strength fastening solutions. The zinc-plated alloy steel construction provides superior corrosion protection in demanding environments, while the coarse UNC thread design ensures quick installation and excellent grip in various materials. The fully threaded configuration maximizes surface contact area, distributing stress evenly to prevent material fatigue and connection failure. The 82° countersink angle and flat head profile create seamless, flush-mounted assemblies ideal for machinery, equipment manufacturing, and electronic enclosures where surface clearance is critical. These industrial screws solve common fastening challenges by combining high tensile strength with precise thread engagement, making them perfect for applications requiring vibration resistance and long-term reliability.

Specification Summary & Compliance

This 6-32 UNC flat head screw features precise Class 3A thread fit tolerance for superior engagement and meets ASTM F835 manufacturing specifications. The product maintains dimensional accuracy with 5/16" length, 0.138" thread diameter, and standard coarse thread spacing. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards ensures safe use across various industrial sectors, while the zinc-plated alloy steel construction delivers consistent performance within specified hardness (Rockwell C39) and tensile strength (130,000 psi) parameters.