S-90044A181 3/4"-10 x 4" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide finish on alloy steel extends service life in harsh environments, minimizing maintenance needs.
• Precise Class 3A thread fit provides tight, secure connections with minimal play, enhancing assembly accuracy and vibration resistance.
• High hardness rating (Rockwell C37) offers excellent wear resistance, maintaining thread integrity through repeated use and disassembly.
• Full threading along the 4" length allows for adjustable positioning and uniform load distribution, increasing design flexibility.
• 5/8" hex drive socket head enables easy installation with standard tools, even in confined spaces, boosting installation efficiency.
• Compliance with ASTM A574, RoHS 3, and REACH ensures material consistency and environmental safety, meeting global regulatory standards.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this Black-Oxide Alloy Steel Socket Head Cap Screw addresses critical challenges in heavy machinery, automotive assemblies, and structural frameworks. The UNRC coarse thread design facilitates quick installation and resists loosening under dynamic loads, while the Class 3A thread fit guarantees precise alignment in high-tolerance applications. Its 170,000 psi tensile strength and Rockwell C37 hardness provide durability against shear forces and abrasion, making it ideal for equipment subjected to continuous stress. By combining robust inch fasteners specifications with a fully threaded rod profile, it ensures consistent clamping force and simplifies maintenance in complex engineering systems.

Specification Summary & Compliance

This socket head cap screw adheres to Class 3A thread fit tolerances for superior precision and is manufactured in accordance with ASTM A574 specifications. It features a 3/4"-10 UNRC coarse thread with a right-hand direction and meets environmental standards including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring safe and reliable use in regulated industries.