S-91251A431 0-80 x 3/32" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional Tensile Strength – With 170,000 psi tensile strength, this screw provides reliable load-bearing capacity and resistance to mechanical failure in demanding applications.
• Precision Thread Fit – Class 3A thread fit ensures tighter tolerances and superior assembly accuracy, reducing the risk of loosening or misalignment.
• Durable Corrosion Resistance – The black-oxide finish on alloy steel enhances corrosion protection, extending service life in industrial environments.
• High Hardness for Wear Resistance – Rockwell C37 hardness offers excellent resistance to wear and deformation under stress, maintaining fastener integrity.
• Fine Thread Spacing Advantage – UNF fine threads provide improved clamping force and vibration resistance compared to coarse threads, ideal for precision assemblies.
• Socket Head Design for Secure Torque – Hex drive and standard socket head profile allow for high torque application with standard tools, minimizing stripping and ensuring firm installation.
• Full Thread Engagement – Fully threaded design maximizes grip and load distribution along the entire length, enhancing joint stability.

Professional Applications & Engineering Value

This 0-80 UNF Socket Head Cap Screw is engineered to address critical challenges in precision machinery, electronics, and automotive assemblies where space constraints and high-stress conditions prevail. The black-oxide alloy steel construction combats corrosion while the Class 3A thread fit and fine thread spacing deliver superior clamping force and vibration resistance, preventing loosening in dynamic environments. Its compact 3/32" length and hex drive facilitate easy installation in tight spaces with standard tools, reducing assembly time and improving reliability. Ideal for applications requiring high-strength, fine-threaded industrial fasteners, this screw ensures long-term performance in equipment subjected to repetitive loads and harsh operational conditions.

Specification Summary & Compliance

This product adheres to Class 3A thread fit for precise dimensional accuracy under the UNF thread standard. It meets ASTM A574 specifications for high-strength alloy steel socket head cap screws, ensuring consistent manufacturing quality. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it is free from hazardous substances, supporting safe and environmentally responsible use in global industrial supply chains.