S-90044A205 1/4"-32 x 1" ASTM A574 Alloy Steel Socket Head Screws

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 coating extends service life in harsh industrial environments, minimizing maintenance needs.
• Precision Class 3A thread fit provides secure, vibration-resistant connections for critical assemblies, enhancing operational safety.
• Extra fine UNEF threads offer finer adjustment and superior holding power in thin materials, improving joint integrity.
• High hardness (Rockwell C37) resists wear and deformation during installation and use, ensuring long-term dimensional stability.
• Fully threaded design allows for maximum engagement and clamping force along the entire length, optimizing load distribution.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety, meeting global industry standards.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these black-oxide alloy steel socket head cap screws address common challenges like vibration loosening and corrosion in machinery, automotive, and aerospace assemblies. The extra fine UNEF threads (1/4"-32) provide enhanced grip in thin-section components, preventing stripping and ensuring precise alignment. With a Class 3A thread fit and high tensile strength, they maintain clamp load under dynamic stresses, reducing downtime. The black-oxide surface treatment adds a protective layer against moisture and chemicals, ideal for environments requiring durability without sacrificing performance. These screws are trusted for precision fastening in tools, fixtures, and equipment where reliability is critical.

Specification Summary & Compliance

This product adheres to Class 3A thread tolerances per UNEF standards, ensuring precise fit and interchangeability. Manufacturing follows ASTM A574 specifications for alloy steel socket head cap screws, confirming material integrity and performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) demonstrates environmental responsibility, free from restricted substances. Dimensions include a 1" length, 3/16" hex drive, and fully threaded right-hand design, supporting consistent application across regulated industries.