S-96877A617 1/4"-20 x 5/8" FF-S-92, QQ-P-35, MS51959-80, SAE AMS2700 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Exceptional tensile strength of 70,000 PSI ensures reliable fastening under high-stress conditions, reducing the risk of mechanical failure.
• Precise UNC coarse threading with Class 2A fit provides easy, accurate installation and consistent engagement in a wide range of materials.
• 82° flat head with standard profile allows for a flush, low-profile finish, minimizing protrusion and improving safety in assembled products.
• Fully threaded design offers maximum grip and holding power along the entire shank length for secure, uniform clamping force.
• Compliance with multiple industry standards including Fed. Spec. FF-S-92 and SAE AMS2700, guaranteeing quality and interchangeability for professional applications.
• RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence, making it suitable for global supply chains and sensitive sectors.

Professional Applications & Engineering Value

This 1/4"-20 x 5/8" flat head Phillips screw is engineered to address common industrial challenges such as vibration loosening, corrosion-induced degradation, and assembly inefficiency. The passivated 18-8 stainless steel material provides excellent resistance to oxidation and chemical exposure, making it ideal for outdoor equipment, marine hardware, and food processing machinery where durability is critical. The UNC coarse thread and Class 2A fit enable quick, reliable fastening in metals, plastics, and wood, reducing installation time while maintaining high clamp load. Its flat head design with an 82° countersink ensures a smooth, flush surface, preventing snagging and enhancing aesthetic appeal in consumer products and industrial enclosures. With a 70,000 PSI tensile strength, this screw supports heavy-duty applications in automotive, aerospace, and construction, delivering long-term performance and reducing maintenance costs.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with Class 2A thread fit, ensuring dimensional accuracy and interchangeability per standard inch-system requirements. It is manufactured to meet specifications including Fed. Spec. FF-S-92, QQ-P-35, MS51959-80, and SAE AMS2700, confirming adherence to rigorous quality and performance benchmarks. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable use across various industries.