S-90117A581 5/16"-18 x 3/4" ASME B18.3 Alloy Steel Wire-Lockable Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional durability with Black-Oxide Alloy Steel construction, providing superior corrosion resistance and extended service life in harsh industrial environments
• Maximum load-bearing capacity thanks to 170,000 psi tensile strength and Rockwell C37 hardness, ensuring reliable performance under extreme mechanical stress
• Precise thread engagement with Class 3A fit and UNC coarse threading, delivering secure fastening with reduced cross-threading risk
• Optimized installation efficiency through standard hex drive design and fully threaded body, enabling quick assembly with standard 1/4" drive tools
• Enhanced safety and compliance with wire locking feature and adherence to ASME B18.3 standards, meeting rigorous industrial quality requirements
• Environmental responsibility with RoHS 3 and REACH compliance, ensuring safe usage across regulated industries
• Versatile application capability with right-hand thread direction and 3/4" length, suitable for various machinery and equipment assembly needs

Professional Applications & Engineering Value

These Socket Head Cap Screws deliver critical engineering solutions for industrial applications requiring high-strength fastening. The Black-Oxide Alloy Steel construction provides superior corrosion resistance, significantly extending component lifespan in demanding environments like manufacturing equipment and automotive assemblies. The UNC coarse threading with Class 3A fit ensures rapid installation with minimal cross-threading incidents, while the 170,000 psi tensile strength guarantees structural integrity under vibration and heavy loads. The combination of fully threaded design and hex drive compatibility enables precise torque application in confined spaces, making these industrial screws ideal for machinery maintenance, heavy equipment manufacturing, and precision engineering applications where reliability is paramount.

Specification Summary & Compliance

Manufactured to exacting standards with Class 3A thread fit precision and UNC coarse thread specifications. Complies with ASME B18.3 manufacturing standards for dimensional accuracy and performance. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements for environmental safety. Features include 5/16"-18 thread size, 3/4" length, and right-hand thread direction with full threading coverage.