S-92805A260 10-32 x 3/8" ASME B18.3, ASTM F879, MIL-DTL-18240 Stainless Steel Thread-Locking Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking with permanent nylon patch ensures reliable fastening in high-stress environments, eliminating the need for separate locking components.
• Superior corrosion resistance from 18-8 stainless steel construction provides long-lasting performance in harsh or outdoor industrial settings.
• High tensile strength of 70,000 psi delivers exceptional load-bearing capacity for demanding mechanical assemblies.
• Precision Class 3A thread fit guarantees smooth installation and secure engagement with mating components, reducing assembly time and rework.
• Wide temperature tolerance from -65° to 250°F maintains locking integrity and material properties in extreme thermal conditions.
• 82° countersink angle and flat head design allows for a flush, professional finish that minimizes protrusion and snagging risks.
• Hex drive compatibility enables efficient installation with standard tools, speeding up assembly and maintenance processes.

Professional Applications & Engineering Value

These 10-32 UNF nylon patch locking flat head screws are engineered to address critical challenges in precision assembly and vibration-prone environments. The 18-8 stainless steel core offers excellent resistance to rust and chemical exposure, making them ideal for industrial machinery, electronic enclosures, and automotive components where durability is paramount. The permanent nylon patch locking feature eliminates loosening under dynamic loads, reducing maintenance downtime and enhancing operational safety. With a fine UNF thread and Class 3A fit, these screws ensure tight tolerances and reliable performance in applications requiring repeated disassembly and reassembly. The combination of high tensile strength and temperature stability supports use in aerospace, military, and high-temperature equipment, providing a versatile, long-term fastening solution.

Specification Summary & Compliance

This screw features a 10-32 UNF fine thread with Class 3A precision fit and is fully threaded for maximum grip. It complies with ASME B18.3, ASTM F879, and MIL-DTL-18240 specifications, ensuring adherence to rigorous industrial standards. The product is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for global use. Additional attributes include a Rockwell B55 hardness and 82° countersink angle for consistent performance in countersunk applications.