S-91253A268 10-32 x 1 1/8" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments
• Exceptional tensile strength (130,000 psi) prevents stripping and failure under high-stress applications
• Precise Class 3A thread fit ensures secure fastening with minimal vibration loosening
• 82° countersink angle provides flush mounting for clean, professional installations
• Hex drive design allows high-torque installation without cam-out issues
• Full threading delivers maximum grip length and load distribution
• Rockwell C39 hardness maintains thread integrity through repeated use

Professional Applications & Engineering Value

These 10-32 UNF flat head screws with fine thread spacing provide reliable fastening solutions for precision machinery, automotive assemblies, and electronic enclosures where vibration resistance is critical. The black-oxide alloy steel construction offers enhanced durability against environmental factors while maintaining dimensional stability. The 82° countersink angle ensures seamless surface integration, eliminating protrusions in tight-clearance applications. Engineered with Class 3A thread fit tolerance, these screws deliver consistent clamping force in high-vibration environments, reducing maintenance frequency and improving assembly reliability. The combination of fully threaded design and hex drive facilitates quick installation while maximizing load-bearing capacity across the entire fastener length.

Specification Summary & Compliance

Manufactured to ASTM F835 specifications with Class 3A thread fit precision and UNF thread type in inch system measurements. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features include right-hand thread direction, 1 1/8" length, and fine thread spacing for secure fastening performance in industrial applications.