S-93085A611 4-40 x 3/16" FF-S-92, QQ-P-35, MS24693-1B, NASM24693, SAE AMS2700 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide coated 18-8 Stainless Steel, ideal for harsh industrial environments.
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration.
• Rockwell B70 hardness provides excellent durability and wear resistance for long service life.
• Fully threaded coarse spacing design allows for faster installation and secure holding power in various materials.
• Class 2A thread fit guarantees consistent, precise engagement with standard nuts and tapped holes.
• Flat head with standard profile and 100° countersink enables flush mounting for a smooth, professional finish.
• Compliance with multiple standards including Fed. Spec. FF-S-92 and RoHS 3, ensuring quality and environmental safety.

Professional Applications & Engineering Value

These 4-40 UNC flat head screws are engineered to address common industrial challenges such as corrosion, mechanical stress, and assembly efficiency. The Black-Oxide 18-8 Stainless Steel construction offers enhanced protection against rust and oxidation, making them suitable for applications in electronics, automotive, and aerospace where exposure to moisture or chemicals is a concern. The coarse thread spacing and fully threaded design facilitate quick, secure fastening in soft materials or pre-tapped holes, reducing installation time and minimizing the risk of cross-threading. With a Phillips drive for easy tool engagement, these screws provide a reliable solution for maintaining structural integrity in demanding environments, ensuring long-term performance and reduced maintenance costs.

Specification Summary & Compliance

This product features a 4-40 UNC thread size with Class 2A thread fit for precise dimensional accuracy and consistent performance. It meets stringent specifications including Fed. Spec. FF-S-92, QQ-P-35, MS24693-1B, and NASM24693, ensuring adherence to industrial standards. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming its safety for use in regulated environments without hazardous substances.