S-91771A887 3-48 x 3/16" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws
Stainless Steel Phillips Flat Head 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
- Maximum holding power achieved through 80,000 psi tensile strength and Rockwell B80 hardness
- Flush, secure seating enabled by 82° countersink angle and undercut flat head profile
- Reliable fastening efficiency with fully threaded coarse UNC design and Class 2A thread fit
- Easy installation and removal using standard No. 1 Phillips drive, reducing assembly time
- Long-term durability in demanding applications due to high-strength stainless steel material
- Compliance assurance with major industry standards and environmental regulations
Professional Applications & Engineering Value
These 3-48 UNC flat head screws are engineered to address critical fastening challenges in industrial settings. The passivated 18-8 stainless steel provides excellent resistance to corrosion and oxidation, making them suitable for applications in manufacturing, electronics, and outdoor equipment where moisture or chemicals are present. The fully threaded coarse UNC design ensures rapid installation and strong grip in various materials, while the 82° countersink angle and undercut flat head allow for a flush finish that minimizes protrusion and improves aerodynamics or aesthetics. With a Phillips drive (No. 1 size), these screws offer reliable torque transfer, reducing the risk of stripping and enhancing assembly efficiency in high-volume production lines.
Specification Summary & Compliance
This product adheres to precise dimensional standards, including Class 2A thread fit for consistent engagement and UNC coarse threads (3-48 size) with a length of 3/16". Manufacturing complies with ASME B18.6.3 specifications, ensuring reliability in mechanical assemblies. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) requirements, confirming environmental and safety compliance for global industrial use.
