S-91400A124 4-40 x 1 1/4" FF-S-92, QQ-P-35, MS51957-22 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
- High tensile strength of 80,000 PSI ensures reliable fastening under significant mechanical stress
- Fully threaded design provides maximum grip and uniform load distribution along the entire length
- Coarse UNC thread with Class 2A fit offers quick assembly and consistent performance in various materials
- Rounded pan head with No. 1 Phillips drive allows for easy installation and a low-profile, secure finish
- Compliance with Fed. Spec. FF-S-92, QQ-P-35, and MS51957-22 guarantees adherence to strict industrial standards
- RoHS 3 and REACH compliance ensures environmental safety and regulatory acceptance in global markets
Professional Applications & Engineering Value
This 4-40 UNC rounded pan head Phillips screw is engineered to address common industrial challenges such as vibration loosening and environmental degradation. The passivated 18-8 stainless steel provides excellent resistance to rust and chemical exposure, making it suitable for outdoor equipment, marine hardware, and electronic enclosures. Its coarse thread design ensures rapid installation in softer materials or pre-tapped holes, reducing assembly time while maintaining a secure fit. The combination of 80,000 PSI tensile strength and a fully threaded shank delivers consistent clamping force, preventing joint failure in high-stress applications. This screw is an optimal choice for engineers seeking durability, compliance, and efficiency in industrial fastening solutions.
Specification Summary & Compliance
This screw features precise Class 2A thread fit per UNC standards, ensuring dimensional accuracy and interchangeability. It meets Fed. Spec. FF-S-92, QQ-P-35, and MS51957-22 manufacturing specifications, confirming its reliability for government and industrial use. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible procurement and use in global markets.
