S-92210A541 1/4"-20 x 7/8" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws
Stainless Steel Hex Drive 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 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability.
- Exceptional tensile strength of 70,000 psi and Rockwell B55 hardness for high-stress applications and reduced risk of fastener failure.
- Precise Class 3A thread fit ensures tight, secure fastening with minimal backlash, enhancing assembly integrity.
- Fully threaded design provides consistent holding power along the entire 7/8" length for versatile fastening needs.
- 82° countersink angle allows for a flush, low-profile finish, improving aesthetics and safety in assembled products.
- Hex drive (5/32") compatibility offers easy installation and high torque transmission with standard tools, speeding up assembly processes.
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety for global supply chain use.
Professional Applications & Engineering Value
This 18-8 Stainless Steel Flat Head Screw is engineered to address common industrial challenges, such as corrosion in humid or chemical-exposed settings. The passivated finish enhances its durability, while the UNC coarse threading and Class 3A fit provide reliable, vibration-resistant connections in machinery, automotive, and construction assemblies. Its flat head design with an 82° countersink ensures a smooth surface finish, reducing snag risks and improving aerodynamic profiles in applications like aerospace or enclosures. By combining high tensile strength and full threading, it delivers consistent performance in heavy-duty fastening, minimizing maintenance and downtime for B2B clients.
Specification Summary & Compliance
This screw features precise UNC 1/4"-20 coarse threads with a Class 3A fit for tight tolerances and reliable engagement. It meets ASME B18.3 specifications for dimensional accuracy and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for industrial and export markets.
