S-92210A437 5/16"-24 x 3 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 construction and passivated finish, ideal for harsh industrial environments.
- Precise thread engagement due to Class 3A thread fit, ensuring reliable, vibration-resistant fastening in critical assemblies.
- High tensile strength of 70,000 psi and Rockwell B55 hardness for dependable performance under heavy loads and stress.
- Easy installation and removal with a standard 82° countersink angle and hex drive, reducing assembly time and tool wear.
- Full threading along the 3 1/2" length provides maximum grip and uniform clamping force across the entire fastener.
- Compliance with ASME B18.3, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations.
- Fine UNF threading (5/16"-24) offers improved adjustment accuracy and resistance to loosening in precision applications.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, this 18-8 stainless steel flat head screw combines material durability with precise Class 3A thread fit to address common fastening challenges like vibration-induced loosening and corrosion. The passivated finish enhances longevity in moist or chemical-exposed environments, while the UNF fine threading ensures secure connections in machinery, automotive, and aerospace assemblies. Its fully threaded design and 82° countersink angle allow for flush mounting, reducing protrusion risks and improving aerodynamic or aesthetic profiles. Ideal for applications requiring high-strength, reliable fastening with compliance to ASME B18.3 standards, it minimizes maintenance and replacement costs in B2B procurement.
Specification Summary & Compliance
This screw adheres to Class 3A thread fit for high precision in the inch system, with 5/16"-24 UNF fine threading and full threading along the 3 1/2" length. It meets ASME B18.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industry reliability.
