S-91400A904 5/16"-18 x 3/4" FF-S-92, QQ-P-35, MS51957-96 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional 80,000 psi tensile strength ensures reliable performance in heavy-duty applications
• Precise Class 2A thread fit guarantees smooth installation and secure fastening
• Full UNC coarse threading provides faster assembly and reduced cross-threading risk
• Standard Phillips drive offers compatibility with common industrial tools
• Rounded pan head design delivers improved aesthetics and reduced surface snagging
• Full regulatory compliance meets Fed. Spec. FF-S-92, RoHS 3, and REACH standards

Professional Applications & Engineering Value

This 5/16"-18 UNC coarse thread screw with passivated 18-8 stainless steel construction addresses critical industrial fastening challenges where corrosion resistance and structural integrity are paramount. The rounded pan head design combined with Phillips drive ensures efficient installation in confined spaces while maintaining a low-profile appearance. Engineered for machinery assembly, electrical enclosures, and outdoor equipment, these industrial screws prevent galvanic corrosion and maintain clamping force under vibration. The fully threaded configuration provides maximum grip length, making them ideal for applications requiring uniform stress distribution across the entire fastener length in demanding environments.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading (5/16"-18) and 3/4" length. Complies with Fed. Spec. FF-S-92 and MS51957-96 manufacturing standards. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards for hazardous substance restrictions.