As of May 1, 2021 our website no longer supports Internet Explorer 11.

We recommend that you update your browser here.

Microsoft Edge | Firefox | Chrome

Free Shipping on Orders Over $99

Top Lock Flange Nut

Top Lock Flange Nut

Top-Lock Prevailing torque flange nuts prevent against loosening by providing resistance when tightened down on a bolt thread. The friction between the nut threads and the bolt increases the amount of force needed to securely lock the assembly into place.

The smooth bottom flange acts as a built-in washer to evenly distribute force over a larger area against the fastening surface.

We stock a wide range of Top Lock Flange Nuts, use the filters to narrow your selection.