S-90044A124 1/4"-20 x 1 3/4" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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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 prolongs service life in harsh industrial environments, minimizing maintenance needs.
- Precise Class 3A thread fit provides consistent engagement and vibration resistance, enhancing assembly integrity.
- Hex socket drive design allows for high torque application and easy installation in confined spaces, improving efficiency.
- Robust Rockwell C37 hardness offers excellent wear resistance, maintaining dimensional stability under heavy loads.
- Coarse UNRC threads enable quick assembly and disassembly, saving time in maintenance and production cycles.
- Full threading along the 1 3/4" length ensures uniform load distribution and versatile fastening options.
Professional Applications & Engineering Value
This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in demanding sectors like machinery, automotive, and heavy equipment. Its high tensile strength and Rockwell C37 hardness prevent stripping and deformation under extreme loads, while the corrosion-resistant coating withstands exposure to oils, moisture, and chemicals. The hex drive and coarse UNRC threads facilitate secure fastening in tight spaces, reducing installation time and improving reliability. Ideal for industrial fasteners requiring durability and compliance, it ensures long-term performance in high-strength screw applications, from assembly lines to structural frameworks.
Specification Summary & Compliance
This screw adheres to Class 3A thread fit for precise tolerance, with 1/4"-20 coarse UNRC threads and full threading along the 1 3/4" length. It meets ASTM A574 specifications for material and manufacturing, ensuring consistent quality. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, it supports environmental and safety regulations for industrial use.
