S-91263A129 3-48 x 1/2" ASTM F835 Alloy Steel Hex Drive Flat Head Screws
Alloy 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
- Exceptional tensile strength of 130,000 PSI ensures reliable, long-lasting fastening in demanding industrial applications.
- Superior corrosion resistance provided by the zinc-plated alloy steel material, extending service life in harsh environments.
- Precise Class 3A thread fit guarantees secure engagement and vibration resistance for stable assemblies.
- Full threading design allows for maximum grip and uniform load distribution along the entire screw length.
- High Rockwell C39 hardness enhances durability and reduces wear during installation and use.
- Standard 82° flat head profile enables a flush finish, ideal for applications where a smooth surface is critical.
- Compliance with ASTM F835, RoHS 3, and REACH ensures product reliability and adherence to strict environmental and safety standards.
Professional Applications & Engineering Value
These 3-48 UNC flat head screws are engineered to address common industrial fastening challenges, such as vibration loosening and corrosion-induced failure. Made from zinc-plated alloy steel, they offer excellent protection against rust and wear, making them ideal for machinery, automotive, and electronics assemblies where corrosion resistance is paramount. The coarse UNC threads and Class 3A fit provide quick, secure installation with minimal risk of cross-threading, while the fully threaded design ensures consistent clamping force. With a high tensile strength of 130,000 PSI, these screws withstand heavy loads and dynamic stresses, reducing maintenance needs and enhancing operational safety in precision-driven environments.
Specification Summary & Compliance
This product meets precise dimensional standards, including Class 3A thread fit and UNC coarse threads for reliable performance. It is manufactured in compliance with ASTM F835 specifications, ensuring consistent quality and mechanical properties. Additionally, these screws are RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations for hazardous substances.
