S-91771A852 5-40 x 5/8" 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 or humid environments.
- High tensile strength of 70,000 psi ensures reliable, long-lasting fastening under demanding loads.
- Class 2A thread fit provides smooth assembly and consistent engagement with standard UNC coarse threads.
- Phillips No. 2 drive offers secure, efficient installation with common tools, reducing slippage and damage.
- Fully threaded design maximizes grip and holding power across the entire 5/8" length for versatile applications.
- 82° countersink angle allows the flat head to sit flush, minimizing protrusion and improving aesthetics.
- Rockwell B80 hardness enhances durability and resistance to wear, extending service life in industrial settings.
Professional Applications & Engineering Value
Engineered for precision and reliability, these 5-40 UNC flat head screws in passivated 18-8 stainless steel address critical challenges in industrial fastening. The coarse thread design ensures quick installation and strong holding power in materials like metal, plastic, and wood, reducing the risk of stripping. With a Phillips drive, they enable efficient torque application, speeding up assembly lines while maintaining secure connections. The fully threaded body and 82° countersink provide a flush finish, essential for applications where space is limited or smooth surfaces are required, such as in machinery, electronics, and automotive components. Compliant with ASME B18.6.3, these screws deliver consistent performance, minimizing downtime and maintenance costs in demanding environments.
Specification Summary & Compliance
This screw adheres to precise dimensional standards, including Class 2A thread fit and UNC coarse threading for reliable compatibility. It meets ASME B18.6.3 specifications for quality and safety, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.
