S-91253A165 6-32 x 3/16" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating, extending service life in harsh industrial environments
• Superior thread engagement with Class 3A fit ensuring reliable, vibration-resistant fastening in critical assemblies
• High tensile strength (130,000 psi) and Rockwell C39 hardness for heavy-duty applications requiring maximum load capacity
• Optimized flush mounting with 82° countersink angle and undercut head profile preventing surface protrusion
• Efficient installation using standard 5/64" hex drive tools, reducing assembly time and labor costs
• Full threading design providing consistent clamping force along the entire 3/16" length
• Regulatory compliance meeting ASTM F835, RoHS 3, and REACH standards for global industrial use

Professional Applications & Engineering Value

These 6-32 UNC flat head screws deliver critical engineering solutions where vibration resistance and corrosion protection are paramount. The black-oxide alloy steel construction combined with Class 3A thread fit prevents loosening in dynamic equipment, while the undercut flat head with 82° countersink ensures perfect flush mounting in precision machinery. Ideal for industrial assembly, automotive components, and electronic enclosures, these fully threaded screws maintain 130,000 psi tensile strength under extreme operational stress, reducing maintenance frequency and total cost of ownership.

Specification Summary & Compliance

Manufactured to ASTM F835 specifications with Class 3A thread fit and UNC coarse threading. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Standardized right-hand threading with 5/64" hex drive compatibility ensures interchangeability across industrial fastener systems.