S-91400A111 4-40 x 9/16" FF-S-92, QQ-P-35, MS51957-120 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 significant mechanical stress.
- Easy installation and removal thanks to the Phillips No. 1 drive and rounded pan head design.
- Secure and precise fastening with Class 2A thread fit and coarse UNC threads for reduced cross-threading.
- Full threading along the 9/16" length provides maximum grip and uniform load distribution.
- Compliance with major standards including Fed. Spec. FF-S-92, QQ-P-35, and MS51957-120 for assured quality.
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements.
Professional Applications & Engineering Value
These 4-40 UNC rounded pan head Phillips screws are engineered to address common industrial challenges such as vibration loosening and corrosion-induced failure. The passivated 18-8 stainless steel offers excellent resistance to oxidation and chemicals, extending service life in demanding settings like machinery assembly, electronic enclosures, and outdoor equipment. The coarse thread and Class 2A fit ensure quick, accurate installation with minimal risk of stripping, while the fully threaded design enhances holding power in thin materials. Ideal for applications requiring reliable, repeatable fastening with regulatory adherence, these screws deliver consistent performance and reduce maintenance costs.
Specification Summary & Compliance
This screw features a 4-40 UNC coarse thread with Class 2A thread fit for standard dimensional accuracy. It complies with manufacturing specifications including Fed. Spec. FF-S-92, QQ-P-35, and MS51957-120. The product is also verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets environmental and safety standards for industrial use.
