S-96877A635 1/4"-20 x 1 1/2" FF-S-92, QQ-P-35, MS51959-85, SAE AMS2700 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ensuring longevity in harsh industrial environments.
• Exceptional mechanical strength with 70,000 psi tensile strength, providing reliable performance under high-stress conditions.
• Optimal flush installation thanks to the standard flat head profile and 82° countersink angle, ideal for applications requiring a smooth surface finish.
• Efficient installation and removal with the Phillips No. 3 drive, offering good torque transfer and reducing tool slippage.
• Reliable coarse threading with UNC 1/4"-20 and Class 2A fit, ensuring secure fastening and vibration resistance.
• Full-threaded design for maximum grip along the entire 1-1/2" length, enhancing holding power in various materials.
• Compliance with major industry standards including Fed. Spec. FF-S-92 and SAE AMS2700, guaranteeing quality and interoperability.

Professional Applications & Engineering Value

This 1/4"-20 UNC flat head screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and the need for flush surface mounting. The passivated 18-8 stainless steel material provides excellent resistance to rust and chemical exposure, making it ideal for outdoor, marine, and chemical processing equipment. The fully threaded coarse UNC design ensures rapid assembly and superior retention in soft metals or plastics, while the 82° countersink angle allows the screw to sit flush, preventing snagging and improving safety in machinery and structural applications. Its high 70,000 psi tensile strength supports heavy-duty use in automotive, aerospace, and construction sectors, offering a dependable solution for critical fastening needs.

Specification Summary & Compliance

This screw adheres to precise dimensional standards with a Class 2A thread fit and UNC coarse thread spacing, ensuring consistent performance and ease of assembly. It meets stringent specifications including Fed. Spec. FF-S-92, QQ-P-35, MS51959-85, and SAE AMS2700. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial and consumer products without hazardous substances.