S-93085A544 1/4"-20 x 1 1/4" FF-S-92, QQ-P-35, MS24693-C100, NASM24693, 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 long-term reliability in harsh environments.
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications.
• Reliable fastening performance with Class 2A UNC coarse threading, providing secure, vibration-resistant connections.
• Efficient installation thanks to the Phillips No. 3 drive and 100° countersink angle for flush, professional finishes.
• Full compliance with major industry standards including Fed. Spec. FF-S-92, QQ-P-35, MS24693, NASM24693, and SAE AMS2700.
• Environmental and regulatory safety with RoHS 3 and REACH compliance, meeting global substance restrictions.
• Versatile fully threaded design ensuring maximum grip and load distribution across the entire 1-1/4" length.

Professional Applications & Engineering Value

This 1/4"-20 UNC Flat Head Phillips Screw is engineered to address critical challenges in industrial and mechanical assemblies. The Passivated 18-8 Stainless Steel material provides excellent resistance to oxidation and chemical exposure, making it ideal for outdoor, marine, or high-moisture settings. The coarse UNC threading and Class 2A fit ensure quick, secure installation with reduced risk of cross-threading, while the flat head with 100° countersink allows for a smooth, flush surface—essential in applications where protrusion is not acceptable. Commonly used in machinery, automotive, and aerospace frameworks, this screw delivers reliable performance under high-stress conditions, supported by its 70,000 psi tensile strength. Its compliance with standards like Fed. Spec. FF-S-92 and SAE AMS2700 guarantees consistency and safety in regulated industries.

Specification Summary & Compliance

This screw adheres to precise dimensional and performance criteria: 1/4"-20 UNC coarse threads with Class 2A tolerance for consistent fit. Manufacturing and material specifications meet Fed. Spec. FF-S-92, QQ-P-35, MS24693-C100, NASM24693, and SAE AMS2700. It is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring no hazardous substances are used. The fully threaded design and 100° countersink angle comply with standard flat head profiles for universal compatibility.