S-90044A184 1/4"-28 x 5" 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.
• Superior corrosion resistance provided by the black-oxide coating extends service life in harsh industrial environments.
• Precision Class 3A thread fit guarantees secure, vibration-resistant connections with minimal backlash.
• Fine UNF thread spacing offers improved load distribution and superior holding power compared to coarse threads.
• Partially threaded design allows for controlled clamping force and easier alignment in assembly applications.
• Hex socket drive enables high-torque installation and removal in confined spaces without stripping.
• Rockwell C37 hardness maintains structural integrity and wear resistance through repeated use cycles.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these black-oxide alloy steel socket head cap screws solve critical fastening challenges where corrosion resistance and high strength are paramount. The UNF fine thread configuration provides superior resistance to vibration loosening in machinery, automotive assemblies, and precision equipment. The partially threaded rod type ensures optimal stress distribution while the hex drive accommodates high torque requirements in space-constrained environments. Meeting ASTM A574 specifications, these screws deliver consistent performance in heavy-duty applications where fastener reliability directly impacts operational safety and maintenance intervals.

Specification Summary & Compliance

This socket head cap screw features Class 3A thread fit with UNF fine thread spacing, manufactured to ASTM A574 standards. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications requiring restricted substance control.