ST-LOC®

Side Top Prevailing-Torque Locknut

The ST-LOC® is an all-metal fastener designed to provide a secure, vibration-resistant connection in various applications. This locknut features positive thread deflection on two sides at the top of the nut, ensuring a reliable locking mechanism without the need for additional locking devices.

The ST-LOC® 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, making it crucial in applications where consistent clamping force is essential for safety and performance.

Application

The ST-LOC® 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 coating.

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