Slotted holes

In order to cover as much surface as possible it is recommended to use NORD-LOCK washers with an enlarged outer diameter in combination with flanged nuts and bolts. Normally a standard bolt and standard NORD-LOCK washer will also work, however, it is recommended to make a tightening test to determine the depth of the impressions around the hole area.

Regular nut & NORD-LOCK
washers with regular outer
diameter (deep impression
marks and deformation due
to reduced contact area)

Regular nut & NORD-LOCK
washers with enlarged
outer diameter (impression
marks better spread, less
deformation)

Flange nut & NORD-LOCK
washers with enlarged
outer diameter (impression
marks wide spread,
minimum deformation,
optimum solution)