S-92360A410 5/16"-18 x 1/2" ASME B18.3, ASTM F835, MIL-DTL-18240 Thread-Locking Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Vibration-resistant secure fastening with a permanent nylon patch thread locker that maintains integrity from -70° to 250° F, preventing loosening in dynamic environments.
• Superior corrosion protection through the black-oxide finish on alloy steel, extending service life in demanding industrial conditions.
• High load-bearing capacity with 120,000 psi tensile strength and Rockwell C39 hardness, ensuring reliable performance under stress.
• Precise, reliable thread engagement due to Class 3A thread fit and UNC coarse threading, reducing cross-threading risks and enabling quicker assembly.
• Easy installation and removal with a 3/16" hex drive and rounded button head design, providing ample torque application without stripping.
• Full-threaded design for consistent clamping force along the entire 1/2" length, enhancing joint stability in various applications.
• Compliance with rigorous industry standards including ASME B18.3, ASTM F835, and MIL-DTL-18240, ensuring quality and interoperability.

Professional Applications & Engineering Value

Engineered for high-vibration industrial environments, these Black-Oxide Alloy Steel rounded head screws address critical challenges like fastener loosening and corrosion. The permanent nylon patch thread locker secures joints in machinery, automotive assemblies, and electrical enclosures, maintaining clamp load under thermal cycling from -70° to 250° F. The UNC coarse threads and Class 3A fit provide excellent engagement in metals and plastics, reducing installation errors. With a 120,000 psi tensile strength and hex drive, they withstand heavy loads while allowing efficient maintenance. Ideal for locking applications where reliability and regulatory compliance are paramount, these screws deliver long-term performance without frequent re-tightening.

Specification Summary & Compliance

This screw features a 5/16"-18 UNC coarse thread with Class 3A thread fit for precision, fully threaded along a 1/2" length. It conforms to ASME B18.3, ASTM F835, and MIL-DTL-18240 specifications, ensuring adherence to dimensional and performance standards. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), it meets environmental regulations for safe use in global markets.