S-91266A254 10-32 x 3/4" ASTM F835 Alloy Steel Thread-Locking Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Vibration-resistant secure fastening with Nylon Patch thread locker that maintains integrity under dynamic loads
• Exceptional tensile strength of 130,000 psi ensures reliable performance in high-stress applications
• Corrosion-resistant black-oxide finish on alloy steel provides enhanced durability in harsh environments
• Precise Class 3A thread fit delivers superior engagement and consistent clamping force
• Temperature stability from -65° to 250°F for reliable operation in extreme conditions
• 82° countersink angle allows for flush mounting in standard applications
• Hex drive design enables efficient installation with standard tools

Professional Applications & Engineering Value

These 10-32 UNF flat head screws with Nylon Patch thread locking technology solve critical vibration-induced loosening problems in industrial machinery, automotive assemblies, and electronic enclosures. The black-oxide alloy steel construction combined with Class 3A thread fit ensures precise alignment and sustained clamping force, while the fine thread spacing provides superior resistance to back-off in high-vibration environments. The fully threaded design maximizes engagement depth, making these flat head fasteners ideal for applications requiring both flush mounting and reliable vibration resistance across temperature extremes from -65° to 250°F.

Specification Summary & Compliance

Manufactured to ASTM F835 specifications with Class 3A thread fit precision and 82° countersink angle. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. Features UNF fine thread with 10-32 thread size and 3/4" length, ensuring consistent performance and regulatory adherence for industrial applications.