S-91253A726 1/2"-13 x 3 1/2" ASTM F835 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 130,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
- Corrosion-resistant black-oxide finish on alloy steel enhances durability and longevity in harsh industrial environments.
- Precise Class 3A thread fit provides superior engagement and vibration resistance for secure, long-lasting assemblies.
- Partially threaded design allows for controlled clamping force and prevents over-tightening in critical applications.
- 82° countersink angle ensures a flush, professional finish that minimizes protrusion and improves safety.
- Hex drive compatibility with 5/16" drive tools enables easy installation and removal with standard industrial equipment.
- Compliance with ASTM F835, RoHS 3, and REACH guarantees adherence to rigorous quality and environmental standards for global use.
Professional Applications & Engineering Value
These flat head screws are engineered to address common industrial challenges such as vibration loosening and corrosion in demanding environments. Made from black-oxide alloy steel, they offer enhanced resistance to rust and wear, making them ideal for machinery, structural assemblies, and outdoor equipment. The 1/2"-13 UNC coarse thread ensures quick installation and strong holding power in materials like metal and hardwood, while the partial threading provides precise load distribution. With a hex drive for secure tool engagement, these screws reduce installation time and improve reliability in industrial fastening applications, from construction to automotive manufacturing.
Specification Summary & Compliance
This product features a Class 3A thread fit for high precision and meets ASTM F835 specifications for consistent quality. The UNC coarse thread with a diameter of 0.5" and length of 3 1/2" ensures compatibility with standard components. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), supporting environmentally responsible manufacturing and use in regulated industries.
