S-91253A157 6-32 x 1 1/2" 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 demanding industrial environments
• Exceptional mechanical strength with 130,000 psi tensile strength and Rockwell C39 hardness for reliable performance under high stress
• Precision Class 3A thread fit ensures tight, secure fastening with minimal vibration loosening
• Optimized partial threading provides superior clamping force distribution while reducing material usage
• Standard 82° countersink angle allows for flush mounting in various materials and applications
• Hex drive compatibility with 5/64" drive size enables secure tool engagement and efficient installation
• Comprehensive compliance with ASTM F835, RoHS 3, and REACH standards ensures regulatory acceptance

Professional Applications & Engineering Value

These 6-32 UNC flat head screws deliver exceptional engineering value through their black-oxide alloy steel construction and Class 3A thread fit. The combination of 130,000 psi tensile strength and Rockwell C39 hardness addresses critical industrial challenges where fastener failure is not an option. The partial threading design optimizes stress distribution while the 82° countersink angle ensures flush mounting in machinery, automotive assemblies, and electronic enclosures. The hex drive configuration prevents cam-out during high-torque applications, making these industrial screws ideal for maintenance-critical operations where reliability and corrosion resistance are paramount.

Specification Summary & Compliance

Manufactured to precise Class 3A thread tolerances with UNC coarse thread profile and right-hand threading. These flat head screws meet ASTM F835 specifications for mechanical properties and dimensional accuracy. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures global acceptance for industrial applications requiring regulated material content.