S-90988A252 1/4"-20 x 1/2" FF-S-92, MS51957-79 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 Black-Oxide 18-8 Stainless Steel, ideal for harsh environments and reducing replacement costs.
- High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration, minimizing failure risks.
- Coarse UNC threading provides quick and easy installation, saving time in assembly lines and maintenance.
- Class 2A thread fit offers consistent, precise engagement for secure fastening without cross-threading issues.
- Rounded pan head with Phillips drive allows for flush mounting and efficient torque application, enhancing aesthetics and usability.
- Full compliance with Fed. Spec. FF-S-92 (MS51957-79) guarantees quality and interchangeability in regulated applications.
- RoHS 3 and REACH compliant ensures environmental safety and global regulatory acceptance for diverse markets.
Professional Applications & Engineering Value
This 1/4"-20 x 1/2" Black-Oxide 18-8 Stainless Steel Rounded Head Phillips Screw is engineered to address common industrial challenges, such as corrosion in outdoor or chemical-exposed settings. The Black-Oxide finish on 18-8 stainless steel enhances durability and reduces oxidation, extending service life in machinery, automotive, and electrical enclosures. Its UNC coarse threads and Class 2A fit ensure rapid, secure fastening in materials like metal and plastic, preventing loosening under stress. Ideal for heavy-duty fasteners in assembly lines, this screw's high tensile strength supports structural integrity, while the rounded pan head design offers a low-profile, snag-resistant solution for streamlined installations.
Specification Summary & Compliance
This screw features precise UNC coarse threading with a Class 2A thread fit for consistent dimensional accuracy. It adheres to Fed. Spec. FF-S-92 (MS51957-79) for manufacturing standards, ensuring reliability in industrial uses. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), it meets environmental and safety regulations for global applications.
