S-90117A250 3/8"-24 x 1" ASME B18.3 Alloy Steel Wire-Lockable Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress industrial applications.
• Precision Class 3A thread fit guarantees tight, secure connections with minimal risk of loosening.
• Black-oxide finish on alloy steel provides enhanced corrosion resistance and durability in harsh environments.
• Fine UNF threading offers superior vibration resistance and improved load distribution.
• Hex socket drive (5/16") allows for high-torque installation and easy access in confined spaces.
• Wire locking feature adds an extra layer of security to prevent unintentional disassembly.
• Full compliance with ASME B18.3 ensures dimensional accuracy and interchangeability.

Professional Applications & Engineering Value

This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered for demanding industrial environments where reliability is critical. The Class 3A thread fit and UNF fine threading provide exceptional resistance to vibration loosening, making it ideal for machinery, automotive assemblies, and precision equipment. The Rockwell C37 hardness combined with 170,000 psi tensile strength ensures long-term performance under heavy loads. Its wire locking mechanism and corrosion-resistant black-oxide coating make it suitable for applications in manufacturing, aerospace, and heavy equipment where safety and durability are paramount.

Specification Summary & Compliance

This screw features a 3/8"-24 UNF fine thread with Class 3A fit for precise engagement. It meets ASME B18.3 dimensional standards and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Manufactured from alloy steel with a black-oxide surface treatment, it ensures consistent performance and regulatory adherence for industrial use.