REPLACE SERRATED LOCK RING SCREW THREAD INSERTS Continued
If lock ring does not come out with insert, hit ring with a punch and hammer to collapse ring. Remove ring.
Install insert in threaded hole. Use a cap screw or bolt and a hex nut.
Lock ring must be flush or no more than 1/32 inch (0.8 mm) below hull surface.
Install lock ring. Use a hammer and a flat piece of steel. Drive straight into surface.