S-92210A537 1/4"-20 x 1/2" 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 and passivated finish, ideal for harsh industrial environments.
- High tensile strength of 70,000 psi ensures reliable, long-term fastening under heavy loads.
- Precise Class 3A thread fit provides smooth assembly and vibration resistance in critical applications.
- Fully threaded design offers maximum grip and holding power along the entire screw length.
- Standard 82° countersink angle allows for a flush, secure fit in countersunk holes.
- Hex drive (5/32") enables easy installation and high torque application with common tools.
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees quality and environmental safety for global supply chains.
Professional Applications & Engineering Value
These 1/4"-20 UNC Flat Head Screws are engineered to address common challenges in industrial assembly, such as corrosion-induced failure and loosening under vibration. The 18-8 stainless steel material, combined with a passivated finish, provides exceptional resistance to rust and chemicals, extending service life in demanding settings like machinery, automotive, and outdoor equipment. The coarse thread spacing and Class 3A thread fit ensure quick, secure fastening with minimal risk of cross-threading, while the flat head design and 82° countersink angle create a smooth, flush surface that reduces snagging and improves aesthetics. Ideal for applications requiring high strength and reliability, these screws help reduce maintenance costs and downtime in heavy-duty fastening scenarios.
Specification Summary & Compliance
This screw features precise Class 3A thread fit per UNC standards, with a thread size of 1/4"-20 and coarse spacing for robust performance. Dimensions include a head diameter of 0.531", length of 1/2", and drive size of 5/32" hex. Manufactured in compliance with ASME B18.3 specifications, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are upheld for industrial use.
