S-90988A011 4-40 x 3/16" FF-S-92, MS51957-12 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 Black-Oxide 18-8 Stainless Steel construction, ideal for harsh industrial environments
- High tensile strength of 80,000 psi ensures reliable performance under demanding mechanical loads
- Fully threaded UNC coarse design provides faster installation and superior holding power in various materials
- Class 2A thread fit guarantees consistent, precise engagement with standard nuts and tapped holes
- Pan head with Phillips No. 1 drive offers a low-profile, secure fastening solution with common tool compatibility
- Compliance with Fed. Spec. FF-S-92 (MS51957-12) ensures adherence to rigorous government and industrial standards
- RoHS 3 and REACH environmental compliance supports sustainable manufacturing and global supply chain requirements
Professional Applications & Engineering Value
Engineered for precision and durability, these 4-40 UNC rounded pan head Phillips screws address critical challenges in industrial assembly. The Black-Oxide 18-8 Stainless Steel material provides excellent resistance to oxidation and corrosion, extending service life in applications like electronics enclosures, machinery, and outdoor equipment. The coarse thread design enhances grip in softer materials and reduces cross-threading risks, while the fully threaded configuration ensures maximum load distribution. With a Phillips No. 1 drive, installation is streamlined for efficiency, making these screws a reliable choice for high-volume production lines where consistency and regulatory compliance—such as RoHS and REACH—are paramount.
Specification Summary & Compliance
This screw features a 4-40 UNC coarse thread with Class 2A fit for standard tolerance and easy assembly. It meets Fed. Spec. FF-S-92 (MS51957-12) for dimensional accuracy and performance. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring adherence to hazardous substance restrictions and sustainable practices.
