S-90044A523 10-32 x 2 1/4" 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, extending service life in harsh industrial environments.
• Precise Class 3A thread fit guarantees tight, secure fastening with minimal play, ideal for applications requiring high vibration resistance.
• Fine UNRF thread spacing provides improved load distribution and better sealing capabilities compared to coarse threads.
• Full thread design along the entire 2-1/4" length offers maximum grip and adjustment flexibility in assembled components.
• Hex socket drive (5/32") allows for high-torque installation with standard tools, enabling efficient assembly in confined spaces.
• Rockwell C37 hardness maintains thread integrity and drive features through repeated use, ensuring long-term reliability.

Professional Applications & Engineering Value

These black-oxide alloy steel socket head cap screws deliver critical performance advantages in precision machinery, automotive assemblies, and heavy equipment where vibration resistance and high tensile strength are paramount. The Class 3A UNRF fine threads provide superior clamping force distribution, preventing loosening in dynamic load conditions while maintaining alignment in precision fixtures. The combination of 170,000 psi tensile strength and Rockwell C37 hardness ensures these fasteners withstand extreme operational stresses without deformation, making them ideal for critical joints in manufacturing equipment, robotics, and aerospace applications where failure is not an option. The fully threaded design offers installation versatility across varying material thicknesses while the hex socket drive enables reliable torque transmission in space-constrained assemblies.

Specification Summary & Compliance

This 10-32 UNRF socket head cap screw features precise Class 3A thread fit tolerances with fine thread spacing and right-hand thread direction. Manufactured to ASME B18.3 specifications using ASTM A574 alloy steel, it delivers consistent dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets.