S-92805A265 10-32 x 5/8" ASME B18.3, ASTM F879, MIL-DTL-18240 Stainless Steel Thread-Locking Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Permanent vibration resistance through nylon patch locking, ensuring reliable fastening in high-stress environments
• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial conditions
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Precision thread engagement with Class 3A fit and UNF fine threading for secure, leak-resistant connections
• Wide temperature tolerance from -65° to 250°F, maintaining locking integrity across diverse operating conditions
• Optimized flush mounting with standard 82° countersink angle and flat head design for smooth surface finishes
• Easy installation using standard 1/8" hex drive tools, reducing assembly time and labor costs

Professional Applications & Engineering Value

This 10-32 UNF nylon patch locking flat head screw delivers critical engineering solutions where vibration loosening and corrosion pose significant risks. The permanent nylon patch locking technology creates consistent friction against mating threads, preventing spontaneous disassembly in machinery, automotive assemblies, and electronic enclosures subjected to constant motion. Manufactured from 18-8 Stainless Steel, it resists oxidation and chemical degradation in marine, chemical processing, and outdoor applications. The Class 3A thread fit and UNF fine threading ensure precise alignment and sealing capabilities in precision equipment, while the 82° countersink angle provides flush mounting for aerodynamic and safety-critical surfaces. These features combine to reduce maintenance frequency and prevent costly downtime in industrial operations.

Specification Summary & Compliance

This fastener maintains Class 3A thread fit tolerances per UNF standards with fully threaded design for maximum engagement. Manufacturing complies with ASME B18.3, ASTM F879, and MIL-DTL-18240 specifications, ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety regulations for industrial components.