S-91400A859 1/4"-28 x 1 1/4" FF-S-92, QQ-P-35, MS51958-84, 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.
- High tensile strength of 80,000 PSI ensures reliable performance under demanding mechanical loads.
- Fine UNF thread with Class 2A fit provides precise, secure fastening and vibration resistance.
- Fully threaded design offers maximum grip and load distribution across the entire length.
- Pan head with No. 3 Phillips drive allows for easy installation and a low-profile, rounded finish.
- Compliance with multiple standards including Fed. Spec. FF-S-92, QQ-P-35, MS51958-84, and NASM51958 guarantees quality and interchangeability.
- RoHS 3 and REACH compliant for environmentally responsible and safe use in regulated industries.
Professional Applications & Engineering Value
This 1/4"-28 UNF pan head machine screw is engineered to address critical challenges in industrial assembly, such as corrosion, vibration loosening, and high-stress conditions. The passivated 18-8 stainless steel provides excellent resistance to rust and chemicals, extending service life in demanding environments like marine, automotive, and electronics manufacturing. The fine thread and Class 2A fit ensure tight, reliable connections that resist back-out under dynamic loads. With a fully threaded design and 80,000 PSI tensile strength, it delivers consistent clamping force and durability, making it a trusted choice for machinery, enclosures, and structural applications where precision and reliability are paramount.
Specification Summary & Compliance
This screw features a 1/4"-28 UNF fine thread with Class 2A tolerance for precise fit and assembly. It complies with specifications including Fed. Spec. FF-S-92, QQ-P-35, MS51958-84, and NASM51958, ensuring adherence to industry standards. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for global industrial use.
