S-92800A218 5/16"-18 x 10 1/2" 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Corrosion-resistant 18-8 stainless steel construction ensures long-term reliability in humid or chemically aggressive environments, reducing maintenance costs.
• High tensile strength of 80,000 psi provides secure fastening under heavy loads, minimizing the risk of mechanical failure.
• Rockwell B70 hardness offers excellent resistance to wear and deformation, extending the screw's service life.
• Class 2A thread fit with UNC coarse threading allows for quick assembly and disassembly while maintaining reliable engagement.
• External hex drive and hex head design enables easy installation with standard tools, improving workflow efficiency.
• Partial threading allows for precise clamping force control, ideal for applications requiring specific unthreaded shank sections.
• Full compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global industrial standards.

Professional Applications & Engineering Value

This 5/16"-18 UNC hex head screw is engineered for demanding industrial applications where corrosion resistance and high tensile strength are critical. The 18-8 stainless steel material prevents rust formation in marine, chemical processing, and outdoor installations, while the Rockwell B70 hardness ensures the fastener maintains its structural integrity under vibration and stress. The coarse UNC thread design provides superior grip in softer materials and allows for rapid assembly in production lines. With partial threading, it offers controlled clamping in machinery, structural frameworks, and equipment where specific unthreaded portions are required for proper alignment. The external hex drive facilitates installation in confined spaces using common wrenches, reducing labor time while delivering 80,000 psi tensile strength performance that meets rigorous industrial demands.

Specification Summary & Compliance

This hex head screw features precise Class 2A thread fit per UNC standards with a thread size of 5/16"-18 and coarse spacing. The manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and restricted substance control. Dimensions include a 10 1/2" length with 1 1/8" minimum thread length, 1/2" head width, and 13/64" head height, providing consistent performance across industrial applications.