Columbianā„¢

Columbian Prevailing-Torque Locknut

The COLUMBIANā„¢ is an all-metal fastener designed to provide a secure, vibration-resistant connection across various applications. This locknutā€™s unique design allows for the optional positioning of the slotted locking element on the side of the nut, creating frictional thread interference where it is most needed.

The COLUMBIANā„¢ locknut is engineered to maintain joint integrity under conditions involving continuous heavy vibration, shock, extreme temperatures, and numerous loading cycles. The prevailing-torque mechanism ensures that the nut remains securely fastened without the need for additional locking devices, making it crucial in applications where consistent clamping force is essential for safety and performance.Ā 

Application

The COLUMBIANā„¢ locknut is suitable for a wide range of applications, including:

  • Automotive Industry: Securing components subject to constant vibration and dynamic loads.
  • Machinery and Equipment: Maintaining the integrity of assemblies in industrial machines operating under harsh conditions.
  • Construction: Providing reliable fastening solutions in structures exposed to dynamic forces and environmental stressors.
Specifications
Sizes

Available in American Standard and Metric sizes, including hex-finished, jam, heavy, hi, square, acorn, weld, track, and flange nuts.

Torque Versions

Offered in special light or heavy torque versions to accommodate different application requirements.

Materials

Steel Grade 2-5-8, 2H/DH, Monel, brass, bronze, aluminum alloys, and stainless steel.

Threads

UNC, UNF or 8UN Series, Class 2B, 3B, left-hand thread, and Metric.

Finishes

Plain, zinc, cadmium, mechanically galvanized, and other platings and coatings.

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Diagram of a Columbian locknut.