S-96640A257 2-56 x 5/16" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws
Stainless Steel Phillips Flat Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with Black-Oxide 18-8 Stainless Steel construction, ideal for harsh industrial environments.
- High tensile strength of 80,000 psi ensures reliable load-bearing capacity and joint integrity under stress.
- Undercut flat head design with 82° countersink angle provides a flush, low-profile finish to prevent snagging and improve aesthetics.
- Class 2A thread fit and UNC coarse threading offer easy installation and secure fastening in a variety of materials.
- Fully threaded shank maximizes grip length and distributes clamping force evenly for enhanced stability.
- Compliance with ASME B18.6.3 guarantees dimensional accuracy and interchangeability for consistent performance.
- RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence for global supply chains.
Professional Applications & Engineering Value
These 2-56 UNC Flat Head Phillips screws are precision-engineered from Black-Oxide 18-8 Stainless Steel to address common industrial challenges such as corrosion, vibration loosening, and space constraints. The undercut flat head profile and 82° countersink angle allow for seamless integration into countersunk holes, reducing protrusion and minimizing debris accumulation in machinery, electronics, and automotive assemblies. With a coarse UNC thread and Class 2A fit, they provide quick, reliable fastening in metals and plastics, while the high tensile strength and Rockwell B80 hardness ensure long-term durability in demanding applications like enclosures, brackets, and precision instruments.
Specification Summary & Compliance
These screws feature a 2-56 UNC coarse thread with Class 2A thread fit for standard dimensional tolerance, and are manufactured to meet ASME B18.6.3 specifications. They comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring they are free from hazardous substances and suitable for international industrial use.
