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Tapped holesNord-Lock washers safely lock the bolt against the underlying surface. |
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Counter boresThe outer diameter of regular Nord-Lock washers is designed for counter-bore holes according to DIN 974, i.e. the washers fit under the head of standard bolts. |
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Through holesAs for all locking washers, through holes require two pairs of Nord-Lock washers – one pair for securing the bolt and a second pair for securing the nut. Turn both fasteners in order to close the cams on both washer pairs before tightening to minimize settlements. Keep the nut secure while tightening the bolt. |
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Stud boltsNord-Lock washers safely lock the nut on stud bolts and eliminate the need for adhesives. |
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Applications with large / slotted holes or soft underlying surfacesTo optimize the load distribution for applications with large / slotted holes or with soft underlying surface, use a flanged nut / bolt together with Nord-Lock “SP” washers with enlarged outer diameter. |
