S-90044A215 1 3/4"-5 x 8" 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 applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in demanding industrial environments.
• High torque capability with a 1 1/4" hex drive and standard socket head profile, allowing for secure installation and removal with standard tools.
• Optimized thread engagement through 1 3/4"-5 UNC coarse threads and Class 2A fit, facilitating quick assembly and vibration resistance.
• Enhanced durability with Rockwell C37 hardness, maintaining structural integrity under repetitive loads and harsh conditions.
• Versatile partial threading over an 8" length, providing flexibility for applications requiring both clamped and unthreaded sections.
• Compliance with global standards including ASTM A574, RoHS 3, and REACH, ensuring safety and environmental responsibility in procurement.

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in heavy machinery, construction, and automotive sectors, where high tensile strength and corrosion resistance are paramount. The 1 3/4"-5 UNC coarse thread design ensures rapid installation and robust holding power, minimizing downtime in assembly lines. Its partially threaded configuration allows for precise load distribution, reducing stress concentrations in dynamic applications. The hex drive and standard socket head enable easy access in confined spaces, enhancing maintenance efficiency. Ideal for structural frames, industrial equipment, and high-vibration environments, this fastener delivers consistent performance, backed by ASTM A574 specifications for reliable engineering solutions.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and UNC coarse threads per industry norms. It meets ASTM A574 for material and manufacturing quality, ensuring high strength and durability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it supports environmental and safety requirements in global supply chains.