S-91251A205 8-32 x 2" 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.
• Class 3A thread fit provides precise, tight tolerances for secure fastening in demanding applications with minimal backlash.
• Black-oxide coating on alloy steel offers superior corrosion resistance and durability, extending service life in harsh industrial environments.
• Partially threaded design allows for controlled clamping force and easier alignment in assembly operations.
• Hex socket drive (9/64") enables high-torque installation with standard tools, preventing stripping and improving efficiency.
• Rockwell C37 hardness ensures high wear resistance and maintains structural integrity under repeated use.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees adherence to industry standards and environmental regulations for safe, global use.

Professional Applications & Engineering Value

This 8-32 UNC Socket Head Cap Screw is engineered to address critical challenges in industrial settings, such as vibration resistance and long-term reliability. The black-oxide alloy steel construction combats corrosion and wear, making it ideal for machinery, automotive, and aerospace applications where exposure to moisture or chemicals is common. Its coarse UNC threads and Class 3A fit ensure quick, secure fastening with high precision, reducing assembly time and minimizing loosening in dynamic environments. The partially threaded rod design provides optimal grip strength without over-tightening, while the hex drive allows for efficient installation in confined spaces. By meeting rigorous standards like ASTM A574, this screw delivers consistent performance, enhancing equipment durability and reducing maintenance costs for B2B clients.

Specification Summary & Compliance

This product features precise Class 3A thread fit with UNC coarse threads, ensuring dimensional accuracy per standard specifications. It adheres to ASTM A574 for manufacturing quality and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for global industrial use.