S-91205A340 10-32 x 3/8" ASME B18.3, ASTM A574 Alloy Steel Thread-Locking Socket Head Screws

Key Features & Benefits at a Glance

• Permanent vibration resistance with nylon patch thread locker that maintains locking performance across a wide temperature range from -70° to 250°F
• Superior strength and durability from black-oxide alloy steel construction offering 170,000 psi tensile strength and Rockwell C37 hardness
• Precise thread engagement with Class 3A thread fit ensuring reliable fastening in demanding applications
• Secure hex drive operation with 5/32" drive size providing excellent torque transmission and slip resistance
• Corrosion-resistant protection through black-oxide surface treatment extending service life in industrial environments
• Industry-standard compatibility with UNF fine thread specification for consistent performance across equipment
• Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for global industrial use

Professional Applications & Engineering Value

These 10-32 UNF socket head cap screws deliver critical vibration resistance in demanding industrial applications where loosening under dynamic loads can compromise equipment safety and performance. The nylon patch thread locker provides permanent locking capability without requiring secondary adhesives, maintaining secure fastening across extreme temperature fluctuations from -70° to 250°F. Manufactured from high-strength black-oxide alloy steel, these fasteners withstand rigorous operating conditions while the fine UNF thread form with Class 3A fit ensures precise engagement in machinery, automotive assemblies, and precision equipment. The combination of 170,000 psi tensile strength and corrosion-resistant black-oxide finish makes these socket head cap screws ideal for applications requiring both mechanical reliability and environmental durability.

Specification Summary & Compliance

This socket head cap screw features precision 10-32 UNF fine threads with Class 3A thread fit for superior engagement and load distribution. Manufactured in compliance with ASME B18.3 specifications and manufactured to ASTM A574 standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance for industrial fastener applications.