S-94444A128 1/2"-13 x 3" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with Black-Oxide coated 18-8 Stainless Steel, ideal for harsh industrial environments.
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibrations.
• Rockwell B70 hardness provides superior durability and resistance to wear over time.
• Coarse UNC threading allows for quick and easy installation, reducing assembly time.
• Class 2A thread fit guarantees precise, consistent engagement with nuts for secure fastening.
• External hex drive design enables high-torque application with standard tools, minimizing slippage.
• Partial threading offers optimal grip and clamping force for varied material thicknesses.

Professional Applications & Engineering Value

This 1/2"-13 UNC Hex Head Screw is engineered to address common industrial challenges, such as corrosion in outdoor or chemical-exposed settings. The Black-Oxide 18-8 Stainless Steel construction provides a robust barrier against rust and oxidation, extending service life in demanding applications like machinery assembly, structural frameworks, and marine equipment. Its coarse thread design ensures rapid installation even in low-visibility conditions, while the partially threaded shank allows for precise clamping without compromising joint integrity. With an external hex drive, it supports high-torque tightening, making it a reliable choice for heavy-duty fastening where vibration resistance and long-term reliability are critical.

Specification Summary & Compliance

This screw features a Class 2A thread fit per UNC standards, ensuring dimensional accuracy and compatibility. It meets ASME B18.2.1 specifications for hex head fasteners and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental adherence for global industrial use.