S-93734A560 3/4"-10 x 3" Tension-Indicating Hex Head Screws

Key Features & Benefits at a Glance

• High tensile strength of 150,000 psi ensures reliable performance in heavy-duty applications, reducing the risk of fastener failure under extreme loads.
• Tension indicating feature provides clear visual confirmation at 27,000 lbs, allowing for precise installation and preventing under or over-tightening in critical assemblies.
• Zinc yellow-chromate plated steel construction offers excellent corrosion resistance, extending service life in harsh industrial environments and outdoor conditions.
• Grade 8 classification and Rockwell C33 hardness deliver superior durability and wear resistance, maintaining integrity in high-stress and high-vibration settings.
• Class 2A thread fit and UNC coarse threading enable easy, quick assembly with reduced cross-threading risks, saving time and labor costs in production lines.
• Partially threaded design provides optimal grip and clamping force distribution, ideal for applications requiring secure fastening without full thread engagement.
• REACH compliance ensures adherence to environmental and safety regulations, supporting sustainable and responsible manufacturing practices.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy machinery, construction, and automotive industries, where high tensile strength and reliable tension indication are paramount. The zinc yellow-chromate plated steel material combats corrosion in demanding environments, while the UNC coarse thread and external hex drive facilitate efficient installation with standard tools, minimizing downtime. Its partially threaded configuration ensures precise load distribution, preventing joint loosening under dynamic stresses. Ideal for structural assemblies, engine components, and industrial equipment, this screw delivers consistent performance, enhanced safety, and long-term cost savings by reducing maintenance needs and replacement frequency.

Specification Summary & Compliance

The screw features a 3/4"-10 UNC coarse thread with Class 2A thread fit for standard dimensional accuracy and compatibility. It adheres to Grade 8 strength standards, supporting a tensile strength of 150,000 psi and Rockwell C33 hardness. Manufacturing complies with REACH (EC 1907/2006) regulations, ensuring environmental safety and material sustainability. The tension indicating function is calibrated for 27,000 lbs, providing reliable load verification in professional applications.