S-91253A196 8-32 x 5/8" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide finish, extending service life in demanding industrial environments
• Exceptional tensile strength of 130,000 psi ensures reliable performance under high-stress applications
• Precision Class 3A thread fit provides superior engagement and vibration resistance in critical assemblies
• Hex drive design enables high-torque installation without cam-out for efficient assembly operations
• 82° countersink angle allows for flush mounting in standard chamfered holes for clean, professional finishes
• Full threading along the 5/8" length ensures maximum grip and holding power throughout the fastener
• Rockwell C39 hardness maintains structural integrity and prevents deformation during installation

Professional Applications & Engineering Value

Engineered for precision industrial applications, these 8-32 UNC flat head screws deliver exceptional performance where reliability matters most. The Black-Oxide Alloy Steel construction provides superior protection against corrosion while maintaining the high 130,000 psi tensile strength required for structural applications. The hex drive configuration ensures secure tool engagement during high-torque installations, preventing stripping and reducing assembly time. With Class 3A thread fit and coarse thread spacing, these screws offer excellent vibration resistance in machinery, automotive components, and electronic enclosures where right-hand threading facilitates standard installation procedures. The fully threaded design maximizes clamping force distribution, making them ideal for applications requiring consistent holding power across the entire fastener length.

Specification Summary & Compliance

These flat head screws feature precision UNC thread form with Class 3A fit for superior dimensional accuracy and reliable performance. Manufacturing complies with ASTM F835 specifications, ensuring consistent quality and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, making them suitable for regulated industries and international markets. The 82° countersink angle meets industry standards for flush mounting applications, while the coarse thread spacing provides optimal engagement in various materials.