S-92210A559 1/4"-20 x 4" 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 environments and long-term reliability.
- High-strength performance offering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications.
- Precise, secure fastening with Class 3A thread fit and UNC coarse thread, reducing the risk of cross-threading and ensuring tight connections.
- Efficient installation and flush finish using a 5/32" hex drive and 82° countersink angle for a clean, professional appearance.
- Full thread engagement along the 4" length, providing maximum grip and load distribution in assembled components.
- Compliance with industry standards including ASME B18.3, ensuring consistent quality and interchangeability.
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, this 1/4"-20 x 4" Flat Head Hex Drive Screw in 18-8 Stainless Steel addresses common challenges like corrosion, vibration loosening, and assembly efficiency. The passivated finish enhances durability against moisture and chemicals, while the UNC coarse thread and Class 3A fit ensure reliable performance in high-stress applications, such as machinery, construction, and automotive assemblies. Its flat head with hex drive allows for quick, tool-friendly installation and a flush surface, minimizing protrusions. Fully threaded and built to ASME B18.3 specifications, it provides consistent clamping force and reduces maintenance needs, making it a cost-effective solution for heavy-duty fastening.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC coarse thread with Class 3A thread fit for precise dimensional accuracy, a 4" length that is fully threaded, and an 82° countersink angle. It complies with ASME B18.3 manufacturing standards and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safety and sustainability in industrial use.
