S-90044A214 1 3/4"-5 x 6" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance under extreme loads, minimizing failure risks in demanding applications.
• Superior corrosion resistance from the black-oxide finish prolongs service life in harsh industrial environments.
• High torque transmission capability with a 1 1/4" hex drive allows for secure tightening without stripping, enhancing assembly efficiency.
• Precise Class 2A thread fit provides smooth engagement and consistent clamping force, reducing installation time and rework.
• Robust Rockwell C37 hardness maintains structural integrity under repetitive stress, ideal for heavy machinery and equipment.
• Coarse UNC threads enable quick assembly and disassembly, saving labor costs in maintenance and repair operations.
• Compliance with ASTM A574, RoHS 3, and REACH ensures environmental safety and meets global regulatory standards for industrial use.

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in heavy-duty industrial settings, such as machinery assembly, construction equipment, and automotive systems. Its 1 3/4"-5 UNC coarse thread design facilitates rapid installation while resisting vibration loosening, a common pain point in dynamic environments. The partially threaded configuration optimizes grip and load distribution, preventing joint failure under high stress. Made from high-strength alloy steel and treated with a durable black-oxide surface finish, it combats corrosion and wear, extending component lifespan in corrosive conditions. By integrating a 1 1/4" hex drive, it ensures efficient torque application, reducing the risk of tool slippage and enhancing worker safety. Ideal for applications requiring reliable industrial fasteners, this screw delivers consistent performance where precision and durability are paramount.

Specification Summary & Compliance

This socket head cap screw adheres to precise dimensional standards, including Class 2A thread fit for consistent accuracy and UNC coarse thread specifications. It meets ASTM A574 manufacturing guidelines for high-strength alloy steel fasteners, ensuring reliable mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it supports environmental and safety requirements in global supply chains.