S-96640A286 1/4"-20 x 3/4" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from Black-Oxide 18-8 Stainless Steel, ideal for harsh environments and long-term reliability.
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and mechanical stress.
• Precise Class 2A thread fit with UNC coarse threading for easy installation and secure fastening in various materials.
• Undercut flat head design provides a flush, clean finish when countersunk, reducing snagging and improving aesthetics.
• Durable Rockwell B80 hardness offers excellent wear resistance and maintains thread integrity over repeated use.
• Phillips No. 3 drive allows for efficient installation with common tools, speeding up assembly processes.
• Full compliance with ASME B18.6.3, RoHS 3, and REACH ensures safety, environmental responsibility, and industry-standard quality.

Professional Applications & Engineering Value

This 1/4"-20 UNC coarse thread flat head screw is engineered to address common industrial challenges, such as corrosion in humid or chemical-exposed settings, thanks to its Black-Oxide 18-8 Stainless Steel material. The undercut flat head profile and 82° countersink angle enable a seamless fit in pre-drilled holes, minimizing protrusion and preventing material damage in applications like machinery assembly, automotive components, and electronic enclosures. With a fully threaded design and right-hand thread direction, it ensures uniform load distribution and quick fastening, reducing installation time and enhancing structural integrity in high-stress environments. Ideal for B2B procurement, it combines durability with regulatory adherence for reliable performance in demanding sectors.

Specification Summary & Compliance

This screw features precise Class 2A thread fit and UNC coarse threads for consistent engagement, with dimensions including a 3/4" length, 0.477" head diameter, and 0.107" head height. It meets ASME B18.6.3 specifications for dimensional accuracy and performance, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.