S-99894A532 5/8"-11 x 3" MS90725-168 Mil. Spec. Medium-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 120,000 psi tensile strength, ideal for demanding structural and machinery applications.
• Superior corrosion resistance provided by cadmium plating, extending service life in harsh industrial environments.
• Reliable fastening performance due to Grade 5 steel construction and Rockwell C25 hardness, resisting wear and deformation.
• Easy installation and removal with an external hex drive and 15/16" head width, allowing for high torque application with standard tools.
• Optimized thread engagement using 5/8"-11 UNC coarse threading and Class 2A fit, ensuring secure connections and reducing cross-threading risks.
• Versatile partial threading design on a 3" length, providing a non-threaded shank for precise clamping in assembled components.
• Compliance with major industry and environmental standards, including MS90725-168, RoHS 3, and REACH, for guaranteed quality and safety.

Professional Applications & Engineering Value

This Grade 5 steel hex head screw is engineered to address critical challenges in heavy machinery, construction, and industrial equipment assembly. The cadmium plated finish offers robust protection against oxidation and chemical exposure, significantly reducing maintenance needs in corrosive settings. Its 5/8"-11 UNC coarse thread and Class 2A thread fit facilitate quick, secure installations, minimizing the risk of thread stripping under high vibration or dynamic loads. The partially threaded design ensures that the unthreaded shank bears shear forces effectively, making it a reliable choice for bolting joints in structural frames, automotive components, and manufacturing fixtures where high tensile strength and durability are paramount.

Specification Summary & Compliance

This fastener adheres to Class 2A thread fit tolerances and UNC coarse thread standards for consistent performance. It is manufactured in accordance with MS90725-168 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and safety guidelines for industrial use.