S-91400A856 1/4"-28 x 1" FF-S-92, QQ-P-35, MS51958-83, NASM51958 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 of 80,000 psi ensures reliable performance under high-stress applications
- Precise Class 2A thread fit guarantees smooth assembly and secure fastening in fine-threaded components
- Full threading along the 1" length provides maximum grip and uniform load distribution
- Standard pan head with No. 3 Phillips drive offers easy installation and a low-profile, rounded finish
- Compliance with multiple industry standards including Fed. Spec. FF-S-92 and RoHS 3, ensuring quality and safety
- Fine UNF thread design enhances vibration resistance and minimizes loosening in dynamic applications
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 1/4"-28 UNF fine thread screws address critical challenges like corrosion, vibration, and mechanical stress. The passivated 18-8 stainless steel material provides excellent resistance to rust and chemicals, extending service life in automotive, aerospace, and machinery assemblies. The pan head design with Phillips drive ensures straightforward installation, while the fully threaded construction and Class 2A fit deliver consistent clamping force and reduce the risk of strip-out. Ideal for applications requiring reliable, high-strength fasteners that meet rigorous Fed. Spec. FF-S-92 and MS51958-83 standards, these screws offer durability and compliance for precision engineering projects.
Specification Summary & Compliance
This screw features a 1/4"-28 UNF fine thread with Class 2A tolerance for precise fit, a pan head with No. 3 Phillips drive, and is made from passivated 18-8 stainless steel. It complies with specifications including Fed. Spec. FF-S-92, QQ-P-35, MS51958-83, and NASM51958, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safety and regulatory adherence for industrial use.
