Object

• screw: To allow the fitting to slide in to the housing you may have to countersink this screw.

• head: All hexagonal screws are recessed, and all other screws are supplied with a countersink head to prevent clothing from getting caught on them.

• bolt: These were countersunk head bolts with no means of holding them if they turned during attempts to remove the nuts.

Modifying Another Word

• so: So countersinking or tapping a hole, for example, can be performed accurately and normal to the surface.

Present participle complement

• fix: Surface mounted Trailer Plates have beveled edges and countersunk fixing holes, meaning the Trailer Plates have minimal projection above yard level.

Modifying Another Word

• then: This hole was then drilled and one either side, the holes were then countersunk to allow the bolts to sit flush.

• not: Round - these are used where the holes are not countersunk at all.