S-91263A208 3/8"-24 x 2" ASME B18.3 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional tensile strength of 120,000 PSI ensures reliable performance in high-stress industrial applications.
- Superior corrosion resistance from zinc plating extends service life in harsh or outdoor environments.
- Precision Class 3A thread fit guarantees secure, vibration-resistant connections with minimal risk of loosening.
- Rockwell C32 hardness provides excellent durability and resistance to wear and deformation.
- Fully threaded design offers maximum grip and load distribution along the entire 2" length.
- 82° countersink angle allows for a flush, professional finish that reduces snagging and improves safety.
- Hex drive compatibility with 7/32" tools enables quick, secure installation and removal with standard equipment.
Professional Applications & Engineering Value
Engineered for demanding environments, these 3/8"-24 UNF Class 3A flat head screws are ideal for applications where precision and reliability are non-negotiable. The zinc-plated alloy steel construction combats corrosion, making them suitable for automotive assemblies, machinery frames, and structural components exposed to moisture or chemicals. The fine thread spacing and Class 3A fit ensure tight, secure fastening in materials prone to vibration, reducing maintenance needs and preventing joint failure. With a fully threaded shank and standard flat head profile, they provide consistent clamping force and a smooth surface finish, essential for aerospace, heavy equipment, and precision manufacturing sectors where safety and compliance are critical.
Specification Summary & Compliance
This screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for precise dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental safety and regulatory approval for industrial use. The UNF fine thread and right-hand threading are manufactured to exact tolerances, supporting consistent performance in high-strength applications.
