S-90988A256 1/4"-20 x 1" FF-S-92, MS51957-83 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 coated 18-8 Stainless Steel, ideal for harsh environments and long-term reliability.
- High tensile strength of 80,000 psi ensures dependable performance under heavy loads and mechanical stress.
- Excellent thread engagement with fully threaded UNC coarse spacing for faster installation and secure fastening.
- Precise Class 2A thread fit guarantees consistent assembly and reduces the risk of cross-threading.
- Comfortable and efficient driving with a No. 3 Phillips drive and rounded pan head, minimizing cam-out and tool wear.
- Broad regulatory compliance including RoHS 3 and REACH, meeting strict environmental and safety standards for global supply chains.
- Standardized dimensions per Fed. Spec. FF-S-92 (MS51957-83), ensuring interchangeability and reliability in industrial applications.
Professional Applications & Engineering Value
These Black-Oxide 18-8 Stainless Steel Rounded Head Phillips Screws are engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly efficiency. The 18-8 stainless steel core provides inherent resistance to rust and chemicals, while the Black-Oxide surface treatment enhances durability and reduces light reflection in sensitive equipment. With a coarse UNC thread and fully threaded design, they offer quick insertion and strong holding power in materials like metal, plastic, and wood, making them ideal for machinery, electrical enclosures, and automotive assemblies. The rounded pan head and Phillips drive facilitate easy installation in confined spaces, reducing labor time and improving workflow in production lines.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC thread with Class 2A thread fit for precise dimensional accuracy and reliable performance. It complies with Fed. Spec. FF-S-92 (MS51957-83) for consistent quality, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are adhered to in industrial applications.
