Metric Top Insert Type Hex Lock Nut

Xiaoguo® offers custom metric top insert type hex lock nut, which can be customized to your unique thread size or torque. You can test the free sample to confirm the fit. The nylon insert ensures grip and the hexagonal shape allows for easy use of common tools.

Product details and parameters

Metric top insert type hex lock nut is a self-locking fastener that has a nylon ring on the top of the threads. When tightened onto a metric bolt, the nylon grabs the threads to prevent loosening due to vibration or movement. It is made of materials such as galvanized steel or stainless steel and is used on machinery, vehicles or equipment. Top inserts do not require a separate lock washer or adhesive. Easy to install and reusable (if the nylon is not worn).

Why choose the metric top insert type hex lock nut?

The metric top insert type hex lock nut is cheaper than many locking systems and causes less wear on the bolt thread. The metric thread fits standard bolts in European or Asian machinery, and the corrosion-resistant coating copes with wet or outdoor conditions. Avoid high temperatures when using (nylon softens around 220°C).

The metric top insert type hex lock nut is used in automotive manufacturing (engine components, exhaust systems), industrial machinery (pumps, motors), and consumer electronics (securing circuit boards or panels). It is also used in HVAC systems, agricultural equipment, and bicycles.

Our market distribution

Common Uses

Metric top insert type hex lock nut is low maintenance. Avoid excessive heat (e.g. near exhaust systems) to protect the nylon. If the insert feels loose or worn, replace the nut promptly. If the product is used outdoors, choose stainless steel to prevent rust. This hex lock nut can be reused, but it is not recommended for critical work. Regularly replace the old nut with a new one to ensure normal operation.