S-92210A535 1/4"-20 x 3/8" 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 and passivated finish, ideal for harsh environments
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing performance
- Precise, secure fastening ensured by Class 3A thread fit and UNC coarse threads for vibration resistance
- Efficient installation and flush mounting with standard 82° countersink angle and 5/32" hex drive
- Full thread engagement along the 3/8" length for maximum grip and distribution of stress
- Regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for safe, industrial use
- Right-hand threading for standard assembly procedures and ease of use
Professional Applications & Engineering Value
These 1/4"-20 UNC Flat Head Screws are precision-engineered from 18-8 Stainless Steel with a passivated finish to combat oxidation and chemical exposure in demanding settings. The Class 3A thread fit and coarse UNC threading provide tight tolerances that resist loosening under dynamic loads, making them ideal for machinery, automotive assemblies, and structural frameworks. The 82° countersink and flat head design allow for seamless, flush installations, reducing protrusion risks and improving aerodynamic or aesthetic profiles. With a fully threaded shank and hex drive, they enable quick, secure fastening in tight spaces, enhancing productivity in maintenance and manufacturing lines.
Specification Summary & Compliance
This screw adheres to inch system dimensions with a 1/4"-20 UNC thread size, Class 3A precision fit, and coarse thread spacing for robust performance. Manufacturing follows ASME B18.3 specifications, ensuring dimensional accuracy and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity for global industrial supply chains.
