S-92210A588 5/16"-18 x 1 5/8" ASME B18.3, ASTM F879 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
- Exceptional corrosion resistance from 18-8 Stainless Steel and Passivated finish, ideal for harsh environments and long-term reliability.
- Superior load-bearing capability with a high 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications.
- Precise and secure fastening ensured by Class 3A thread fit and UNC coarse threading, reducing cross-threading risks.
- Efficient installation and removal with a 3/16" hex drive, providing a positive grip and minimizing tool slippage.
- Flush surface finish due to the standard 82° countersink angle flat head, preventing snagging and improving aesthetics.
- Full-length threading for maximum grip and holding power along the entire 1-5/8" length.
- Compliance with major industry standards including ASME B18.3 and ASTM F879, guaranteeing quality and interchangeability.
Professional Applications & Engineering Value
This 5/16"-18 UNC Flat Head Screw is engineered from 18-8 Stainless Steel to address critical industrial challenges such as corrosion, vibration loosening, and high-stress loads. The passivated finish significantly enhances its resistance to oxidation and chemical exposure, making it suitable for marine, chemical processing, and outdoor equipment. Its coarse UNC threading and Class 3A fit provide a tight, reliable seal in softer materials or where rapid assembly is required, reducing the risk of thread stripping. The hex drive ensures high torque application without cam-out, which is vital in automated or high-volume production lines. These features make it an excellent choice for machinery, structural assemblies, and enclosures where durability and consistent performance are non-negotiable.
Specification Summary & Compliance
This screw adheres to precise dimensional standards with a Class 3A thread fit and UNC coarse thread profile, ensuring excellent interchangeability and fit. It is manufactured in compliance with ASME B18.3 and ASTM F879 specifications. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming it is free from hazardous substances and safe for various industrial and consumer applications.
