S-91772A516 4-40 x 1 7/8" 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
- Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments.
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity and reduces risk of mechanical failure.
- Precise Class 2A thread fit provides smooth assembly and secure fastening in coarse UNC threading applications.
- Fully threaded design maximizes grip and distribution of stress along the entire 1 7/8" length.
- Phillips No. 1 drive offers efficient installation with common tools, minimizing slippage and damage.
- Rounded pan head profile combines a low-profile appearance with effective clamping force.
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety.
Professional Applications & Engineering Value
These 4-40 UNC rounded pan head Phillips screws are engineered to address critical fastening challenges in industrial settings. The passivated 18-8 stainless steel material provides excellent resistance to oxidation and chemical exposure, making them suitable for applications in electronics, machinery, and outdoor equipment where durability is paramount. The coarse thread and Class 2A fit ensure quick, reliable installation in various materials, reducing assembly time and preventing cross-threading. With a fully threaded design and 70,000 psi tensile strength, they deliver consistent clamping force and vibration resistance, essential for maintaining integrity in dynamic environments. The Phillips drive further enhances usability, supporting efficient maintenance and reducing tool wear in high-volume production lines.
Specification Summary & Compliance
This screw features a 4-40 UNC coarse thread with Class 2A dimensional accuracy for reliable fit and performance. It is manufactured in accordance with ASME B18.6.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met.
