S-92210A413 5-40 x 7/8" 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 industrial environments.
- High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-lasting fastening.
- Precise, secure thread engagement thanks to Class 3A fit and UNC coarse threads, reducing the risk of cross-threading and loosening.
- Efficient installation and flush finish with a standard 82° countersink angle and hex drive, allowing for a clean, recessed appearance.
- Full thread coverage along the 7/8" length ensures maximum grip and load distribution across the entire fastener.
- Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, guaranteeing safety and regulatory adherence.
- Durable material properties resist wear and deformation, maintaining integrity under high-stress conditions.
Professional Applications & Engineering Value
This 5-40 UNC flat head screw is engineered to address critical challenges in industrial assembly, such as vibration resistance and environmental exposure. The 18-8 stainless steel material, combined with a passivated finish, provides excellent protection against rust and chemical corrosion, making it suitable for machinery, automotive, and outdoor equipment. The hex drive and fully threaded design ensure quick, secure installation with high torque capability, while the Class 3A thread fit and coarse thread spacing enhance reliability in high-vibration applications. Its 82° countersink angle allows for a flush mount, reducing protrusion risks and improving aesthetic integration in precision engineering projects.
Specification Summary & Compliance
This screw adheres to Class 3A thread fit for precise dimensional accuracy under the UNC (Unified National Coarse) standard. Manufacturing follows ASME B18.3 specifications, ensuring consistent quality and performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting sustainable industrial practices.
