recessed screw

Please only return if the recessed screw is exposed.

Provide two piece transition, with recessed screws, on top of base to cover pole base plate and bolts.

All opened, with powered screwdriver on recessed screws, on junctions of the ship's electrical system.

This sophisticated-looking arrangement actually proved very simple to adjust - you just loosen the recessed screws with a coin and move the belt and harness up or down the base plat to the position you want, then retighten the screws.