S-90124A843 3/4"-10 x 2" ASME B18.2.1, SAE J429 Steel Wire-Lockable Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 120,000 psi tensile strength for reliable performance in demanding industrial applications
• Superior corrosion resistance provided by zinc plating, extending service life in harsh environments
• High-strength Grade 5 classification ensures consistent mechanical properties and Rockwell C25 hardness for durable fastening
• Quick installation and removal with external hex drive and 1 1/8" head width for easy tool access
• Secure locking mechanism with wire locking type to prevent loosening under vibration and dynamic loads
• Optimized thread engagement with 3/4"-10 UNC coarse threads and Class 2A fit for faster assembly and reduced cross-threading risk
• Full 2" threading provides maximum grip length and uniform stress distribution across the entire fastener

Professional Applications & Engineering Value

This Grade 5 hex head screw delivers critical engineering value through its zinc-plated steel construction and UNC coarse thread design, specifically engineered to address common industrial challenges. The combination of 120,000 psi tensile strength and Rockwell C25 hardness ensures reliable performance in heavy machinery, structural steel connections, and equipment assembly where vibration resistance and long-term integrity are paramount. The external hex drive with substantial 1 1/8" head width allows for high torque application without stripping, while the wire locking feature maintains clamp force in dynamic environments. These characteristics make it ideal for construction, manufacturing, and maintenance applications requiring ASME B18.2.1 compliant fasteners that withstand extreme mechanical stresses without compromising safety or performance.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerance for consistent assembly performance and features 3/4"-10 UNC coarse threads with right-hand orientation. Manufactured to ASME B18.2.1 specifications and SAE J429 Grade 5 requirements, it ensures dimensional accuracy and mechanical reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry standards for hazardous substance restrictions and chemical safety in industrial applications.