S-90044A525 10-32 x 3 1/2" ASME B18.3, ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance from the black-oxide finish on alloy steel extends service life and maintains integrity in harsh industrial environments.
• Precise Class 3A UNRF fine thread fit provides excellent vibration resistance and secure fastening, minimizing loosening in machinery and equipment.
• Hex socket drive design allows for high torque application and easy installation in confined spaces, improving assembly efficiency.
• Full threading along the 3 1/2" length offers versatile engagement depth and consistent clamping force across various material thicknesses.
• Compliance with ASME B18.3, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations, supporting global supply chain requirements.
• Rockwell C37 hardness enhances wear resistance and durability, reducing maintenance needs and downtime in continuous operations.

Professional Applications & Engineering Value

This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address critical challenges in industrial settings, such as vibration-induced loosening and corrosion. The Class 3A UNRF fine thread provides a tight, secure fit that resists back-out in high-vibration machinery, automotive assemblies, and precision equipment. Made from high-strength alloy steel with a protective black-oxide coating, it withstands exposure to oils, moisture, and chemicals, ensuring long-term reliability in harsh environments. The hex drive socket enables efficient installation with standard tools, reducing assembly time and labor costs. Ideal for applications requiring robust fastening solutions, this screw delivers consistent performance in aerospace, manufacturing, and heavy machinery, where tensile strength and thread precision are paramount for safety and operational efficiency.

Specification Summary & Compliance

This socket head cap screw features a 10-32 thread size with Class 3A fine thread fit and UNRF thread type, ensuring high dimensional accuracy and compatibility with standard components. It meets ASME B18.3 specifications for consistency and reliability, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances. Manufactured from alloy steel with a tensile strength of 170,000 psi and Rockwell C37 hardness, it adheres to strict quality controls for industrial use.