S-92210A338 1/4"-28 x 1 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 for long-lasting performance in harsh environments.
- Exceptional tensile strength of 70,000 psi and Rockwell B55 hardness for reliable, heavy-duty fastening applications.
- Precise Class 3A fine thread fit ensures secure, vibration-resistant connections with minimal risk of loosening.
- Fully threaded design provides maximum grip and load distribution along the entire screw length.
- Standard 82° countersink angle allows for flush mounting, reducing protrusion and improving aesthetics.
- Hex drive (5/32") compatibility offers easy installation and removal with common tools, minimizing assembly time.
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees industry-standard quality and environmental safety.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 1/4"-28 UNF flat head screws address critical challenges like corrosion, vibration, and mechanical stress. The 18-8 stainless steel material, enhanced by a passivated finish, provides excellent resistance to rust and chemicals, making them ideal for machinery, automotive assemblies, and outdoor equipment. The Class 3A fine threads and fully threaded design ensure tight, reliable fastening in applications where precision and durability are paramount, such as aerospace components or electronic enclosures. By combining high tensile strength with a flat head profile and hex drive, these screws streamline installation while maintaining structural integrity under heavy loads.
Specification Summary & Compliance
This product features precise Class 3A thread fit with UNF fine threads (1/4"-28), ensuring tight tolerances for secure fastening. It adheres to ASME B18.3 manufacturing standards and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and industry reliability.
