Total of 100 D Nuts M8 x 18mm THREADED WOOD INSERT NUTS M8 HEX DRIVE SCREW FIXINGS TYPE D Type D insert nuts. Installed by simply screwing into a suitable size hole. The unique external thread provides strong pull out resistance. Type D have a flanged head which prevents driving in too far. Provides a strong permanent thread in wood. Internal threads are standard metric coarse(most common). RECOMMENDED HOLE SIZE 11.0 - 11.5 mm
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