S-91400A542 1/4"-20 x 1" FF-S-92, QQ-P-35, MS51957-83 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction for extended service life in harsh environments
• High tensile strength of 80,000 psi ensures reliable performance under significant mechanical stress
• Excellent thread engagement with UNC coarse threading and Class 2A fit for quick assembly and vibration resistance
• Optimized drive efficiency through No. 3 Phillips drive design preventing cam-out during installation
• Versatile rounded pan head profile provides a finished appearance while accommodating standard tools
• Full threading along 1" length delivers maximum grip strength across the entire fastener engagement
• Regulatory compliance assurance meeting multiple industrial standards for quality and environmental safety

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these passivated 18-8 stainless steel rounded head screws deliver exceptional performance where corrosion resistance and mechanical strength are critical. The UNC coarse thread configuration ensures rapid installation and superior holding power in various materials, while the Class 2A thread fit maintains precise tolerances for consistent performance. The Phillips drive system with No. 3 size provides secure tool engagement, reducing installation time and preventing damage to fastener heads. These fully threaded screws are particularly valuable in assembly lines, machinery manufacturing, and outdoor equipment where their 80,000 psi tensile strength and corrosion-resistant properties ensure long-term reliability despite exposure to moisture, chemicals, and temperature variations.

Specification Summary & Compliance

This 1/4"-20 x 1" stainless steel rounded head screw features precision UNC coarse threads with Class 2A fit tolerance for consistent performance. Manufacturing complies with Fed. Spec. FF-S-92, QQ-P-35, and MS51957-83 specifications, ensuring dimensional accuracy and material quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming adherence to strict substance restriction guidelines for industrial applications worldwide.