S-91253A980 1"-14 x 2" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional holding power with 130,000 psi tensile strength and Rockwell C37 hardness for reliable performance in high-stress applications.
• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in demanding environments.
• Precise and secure fastening with Class 3A thread fit and fully threaded 1"-14 fine pitch, ensuring tight, vibration-resistant connections.
• Efficient installation and removal using the 5/8" hex drive, allowing for high torque application without slippage.
• Flush mounting capability with an 82° countersink angle and standard flat head profile for a smooth, unobtrusive finish.
• Compliance with major industry standards including ASTM F835, RoHS 3, and REACH, guaranteeing safety and regulatory adherence.
• Versatile for heavy-duty use in industrial settings, thanks to its robust material and fully threaded design for maximum grip.

Professional Applications & Engineering Value

These flat head screws are engineered to address critical challenges in industrial assembly, such as vibration loosening and corrosion-induced failure. The black-oxide alloy steel construction offers enhanced durability and resistance to rust, making them ideal for machinery, automotive, and structural applications where exposure to harsh conditions is common. The 1"-14 fine thread and Class 3A fit provide superior clamping force and precision, reducing the risk of joint failure under heavy loads. With a fully threaded design and 82° countersink, they ensure a flush fit that minimizes protrusion and improves safety in dynamic environments. This combination of high tensile strength and compliant standards like ASTM F835 delivers reliable performance, lowering maintenance costs and enhancing operational efficiency for B2B clients.

Specification Summary & Compliance

This product features precise Class 3A thread fit with 1"-14 UNS fine threads and a length of 2", ensuring accurate and secure fastening. It meets ASTM F835 specifications for mechanical properties and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards without hazardous substances.