S-92805A360 5/16"-18 x 1 1/4" Stainless Steel Thread-Locking Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking: Permanent nylon patch ensures reliable fastening in high-vibration environments without loosening.
• Exceptional corrosion resistance: 18-8 stainless steel with passivated finish provides superior protection against rust and chemical exposure.
• High-strength durability: 70,000 psi tensile strength and Rockwell B55 hardness withstand heavy loads and mechanical stress.
• Precision thread fit: Class 3A UNC coarse threads ensure secure, accurate mating with components for reduced assembly errors.
• Wide temperature tolerance: Operates reliably from -70°F to 250°F, suitable for diverse industrial conditions.
• Streamlined installation: Flat head with 82° countersink angle and 3/16" hex drive allows for flush, tool-efficient mounting.
• Regulatory compliance: Meets RoHS 3 and REACH standards for safe use in regulated industries.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this 18-8 stainless steel flat head screw with nylon patch locking addresses critical challenges like vibration-induced loosening and corrosion in machinery, automotive, and electrical enclosures. The Class 3A thread fit and coarse UNC threading enhance grip strength and reduce cross-threading risks during high-speed assembly. Its passivated finish extends service life in humid or chemical-exposed environments, while the 82° countersink and hex drive design facilitate seamless integration into flush-mounted applications, minimizing protrusion and improving aesthetics. Ideal for securing components in industrial equipment where reliability and regulatory adherence are paramount.

Specification Summary & Compliance

This fastener features a 5/16"-18 UNC thread with Class 3A precision fit and coarse spacing, ensuring tight tolerances per industry standards. The fully threaded design and right-hand direction support uniform load distribution. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material restrictions adherence for global supply chains.