S-91253A794 5/8"-11 x 1" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating, ideal for harsh industrial environments
• Superior tensile strength (130,000 psi) ensures reliable performance under heavy loads
• Precise Class 3A thread fit provides secure, vibration-resistant connections
• Coarse UNC threading enables quick assembly and disassembly in demanding applications
• 82° countersink angle allows for flush mounting in various materials
• Full threading along 1" length offers maximum grip and load distribution
• 3/8" hex drive compatibility ensures easy installation with standard tools

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these 5/8"-11 UNC flat head screws deliver exceptional performance in machinery assembly, structural steel connections, and equipment manufacturing. The black-oxide alloy steel construction provides superior corrosion resistance while maintaining Rockwell C37 hardness for long-term durability. The coarse thread design ensures rapid installation in tough materials, while the 82° countersink angle creates seamless, flush-mounted surfaces that prevent snagging and improve safety. These fully threaded fasteners distribute stress evenly across the entire length, making them ideal for applications requiring maximum clamping force and vibration resistance in construction, automotive, and industrial equipment sectors.

Specification Summary & Compliance

Manufactured to exacting standards with Class 3A thread fit and UNC coarse threading for precision performance. Complies with ASTM F835 specifications for mechanical properties and dimensional accuracy. Meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance. Features right-hand thread direction with standard flat head profile and 3/8" hex drive compatibility for consistent installation across industrial applications.