S-91249A105 4-40 x 1/4" ASME B18.6.3 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 coated 18-8 Stainless Steel, ideal for harsh environments and reducing replacement frequency.
- High tensile strength of 70,000 psi ensures reliable performance under heavy loads, minimizing the risk of fastener failure.
- Rockwell B70 hardness provides superior durability and resistance to wear, extending the service life of your assemblies.
- Class 2A thread fit offers consistent, reliable engagement for easier assembly and stable connections.
- Fully threaded right-hand design with coarse UNC threads enables quick installation and maximum grip in a variety of materials.
- Phillips No. 1 drive allows for efficient driving with common tools, reducing installation time and effort.
- Compliance with ASME B18.6.3, RoHS 3, and REACH ensures product quality, safety, and environmental responsibility for global supply chains.
Professional Applications & Engineering Value
This 4-40 UNC screw with a rounded pan head and Black-Oxide 18-8 Stainless Steel construction is engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly efficiency. The coarse thread and fully threaded design provide excellent holding power in softer materials and allow for rapid installation in high-volume production lines. The Phillips drive ensures compatibility with standard tools, reducing downtime. Ideal for industrial applications in electronics, machinery, and outdoor equipment, this screw maintains integrity in demanding conditions, thanks to its high tensile strength and protective coating that resists oxidation and wear.
Specification Summary & Compliance
This product features precise Class 2A thread fit per UNC standards, ensuring dimensional accuracy for reliable fastening. It is manufactured in compliance with ASME B18.6.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.
