S-91772A509 2-56 x 1 5/8" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips 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
- Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments.
- Exceptional tensile strength rated at 70,000 psi ensures reliable performance under high-stress applications.
- Efficient installation with Phillips No. 1 drive and fully threaded design for quick, secure fastening.
- Wide compatibility due to coarse UNC thread spacing and Class 2A fit, suitable for various assembly needs.
- Durable rounded pan head provides a low-profile, secure finish that resists stripping during torque application.
- Full regulatory compliance with ASME B18.6.3, RoHS 3, and REACH standards, ensuring safety and environmental responsibility.
- Versatile 1-5/8" length accommodates diverse material thicknesses in industrial and mechanical assemblies.
Professional Applications & Engineering Value
This 2-56 UNC fully threaded pan head screw is engineered to address common industrial challenges such as vibration loosening and environmental degradation. The passivated 18-8 stainless steel offers excellent resistance to oxidation and chemical exposure, making it suitable for outdoor equipment, marine hardware, and food processing machinery. Its coarse thread spacing and Class 2A thread fit provide reliable engagement in softer materials or pre-tapped holes, reducing the risk of cross-threading. The combination of a Phillips No. 1 drive and fully threaded shank ensures uniform stress distribution and ease of installation in automated or manual assembly lines, enhancing productivity while maintaining corrosion-resistant integrity in demanding applications.
Specification Summary & Compliance
This screw adheres to ASME B18.6.3 specifications, with precise Class 2A thread fit and UNC coarse thread standards for consistent performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial use.
