S-92210A101 4-40 x 9/16" ASME B18.3, ASTM F879 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-lasting fastening under demanding loads.
- Precise Class 3A thread fit provides smooth assembly and reduces the risk of cross-threading.
- Fully threaded design offers maximum grip and uniform load distribution along the entire length.
- 82° countersink angle allows for a flush, secure fit in standard countersunk holes.
- Hex drive (1/16") enables easy installation and high torque application with common tools.
- Compliance with ASME B18.3, ASTM F879, RoHS 3, and REACH guarantees quality and environmental safety for professional use.
Professional Applications & Engineering Value
These 4-40 UNC flat head screws are engineered to address critical fastening challenges in industrial settings. Made from 18-8 stainless steel with a passivated finish, they resist corrosion and oxidation, extending service life in machinery, electronics, and outdoor equipment. The Class 3A thread fit and coarse UNC threading ensure quick, secure installation, reducing assembly time and minimizing thread wear. With a fully threaded shank and 82° countersink angle, they provide a flush, vibration-resistant seal, ideal for applications where space and aesthetics are concerns. The hex drive design allows for efficient torque transfer, making them a reliable choice for high-strength fastening in automotive, aerospace, and manufacturing industries.
Specification Summary & Compliance
This flat head screw features precise Class 3A thread fit per UNC standards, with a thread size of 4-40, length of 9/16", and coarse thread spacing for robust performance. It meets ASME B18.3 and ASTM F879 specifications, ensuring dimensional accuracy and reliability. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for industrial use.
