S-91400A854 1/4"-28 x 7/8" FF-S-92, QQ-P-35, MS51958-82, 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
- Exceptional corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh or humid industrial environments.
- High tensile strength of 80,000 PSI ensures reliable performance under significant mechanical stress and vibration.
- Fine UNF thread and Class 2A fit provide superior holding power and resistance to loosening in precision assemblies.
- Fully threaded design maximizes engagement and clamping force across the entire 7/8" length.
- Pan head with No. 3 Phillips drive offers a low-profile, rounded head for smooth surfaces and easy, secure installation.
- Compliance with major standards including Fed. Spec. FF-S-92, QQ-P-35, and MS51958-82 guarantees consistent quality and interchangeability.
- RoHS 3 and REACH compliant for safe use in regulated industries, free from hazardous substances.
Professional Applications & Engineering Value
This 1/4"-28 UNF fine thread pan head screw is engineered to address common challenges in industrial fastening, such as vibration-induced loosening and corrosion in demanding settings. The passivated 18-8 stainless steel material provides excellent resistance to rust and chemical exposure, extending service life in applications like machinery, electronics, and outdoor equipment. The fine thread and Class 2A fit ensure precise, secure fastening with minimal risk of stripping, while the fully threaded design distributes load evenly, enhancing joint integrity. Its pan head with Phillips drive facilitates quick installation and a flush finish, making it a reliable choice for assemblies requiring both strength and a clean aesthetic.
Specification Summary & Compliance
This screw features a 1/4"-28 UNF fine thread with Class 2A thread fit for standard tolerance and easy assembly. It adheres to specifications including Fed. Spec. FF-S-92, QQ-P-35, MS51958-82, and NASM51958, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial and consumer applications without hazardous substances.
