S-96640A259 2-56 x 7/16" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws
Stainless Steel Phillips Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional corrosion resistance with Black-Oxide 18-8 Stainless Steel construction, ideal for harsh industrial environments
- High tensile strength of 80,000 psi ensures reliable fastening under substantial mechanical stress
- Precise Class 2A thread fit guarantees smooth assembly and consistent performance in repetitive applications
- Undercut flat head design provides a flush, low-profile finish that minimizes protrusion and snagging risks
- 82° countersink angle allows for secure seating in tapered holes, enhancing joint stability
- Fully threaded coarse UNC pattern enables rapid installation and strong holding power in various materials
- Rockwell B80 hardness offers excellent durability and resistance to wear over extended use
Professional Applications & Engineering Value
These 2-56 UNC flat head screws are engineered to address critical challenges in precision assembly and machinery. The Black-Oxide 18-8 Stainless Steel provides superior resistance to oxidation and chemical exposure, making them suitable for electronics, automotive, and outdoor equipment. The undercut flat head and 82° countersink angle ensure a seamless fit that prevents surface damage and improves aerodynamics in enclosed systems. With a Phillips No. 1 drive, installation is streamlined for high-volume production lines, reducing tool slippage and enhancing worker efficiency. These screws deliver reliable performance in applications demanding high-strength, corrosion-resistant fastening without compromising on compliance or longevity.
Specification Summary & Compliance
This product adheres to ASME B18.6.3 specifications for dimensional accuracy and thread form. The UNC coarse threads maintain a Class 2A fit for consistent engagement, while the 7/16" length and fully threaded design ensure versatile application. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards confirms environmental safety and regulatory acceptance for global industrial use.
