S-99894A423 1/2"-13 x 2" MS90725-115 Mil. Spec. Medium-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• High tensile strength of 120,000 PSI ensures reliable performance in heavy-duty applications, reducing the risk of fastener failure.
• Cadmium plating provides superior corrosion resistance, extending service life in harsh industrial and outdoor environments.
• Grade 5 steel construction with Rockwell C25 hardness offers excellent durability and resistance to wear and deformation.
• UNC coarse threading and Class 2A thread fit enable quick assembly and secure fastening, minimizing installation time.
• External hex drive and hex head design allows for easy tightening with standard tools, improving efficiency in construction and maintenance.
• Partial threading provides unthreaded shank strength where needed, ideal for applications requiring clamping force.
• Compliance with MS90725-115 ensures consistent quality and interoperability in regulated industrial settings.

Professional Applications & Engineering Value

This Grade 5 hex head screw is engineered to address critical challenges in industrial and construction applications, where vibration, heavy loads, and environmental exposure are common. The cadmium plated steel finish combats rust and corrosion, prolonging fastener life in demanding conditions. With a 1/2"-13 UNC coarse thread and Class 2A fit, it ensures precise engagement and reduces cross-threading risks during high-volume assembly. The external hex drive and robust head design facilitate secure torque application, making it suitable for machinery, structural frameworks, and equipment requiring 120,000 PSI tensile strength. Its partial threading optimizes grip and shear resistance, providing engineering value in bolted joints that must withstand dynamic stresses without loosening.

Specification Summary & Compliance

This screw adheres to inch system dimensions, including a 2" length and 1/2"-13 UNC coarse thread with Class 2A thread fit for consistent accuracy. It meets MS90725-115 specifications, ensuring compliance with industrial standards for material and performance. The Grade 5 strength classification and Rockwell C25 hardness confirm its reliability, while the cadmium plating aligns with common corrosion protection requirements. This product is designed to support applications demanding high mechanical integrity and regulatory conformity.