Definition of counterbore in English:
1A drilled hole that has a flat-bottomed enlargement at its mouth.
- In the new design, the holes are formed with a lead-in chamfer to facilitate pushpin insertion and a counterbore formed inside the hole that creates a shoulder to hold the pins in place.
- A counterbore surrounds each rivet receiving opening in the flat bottom surface.
- This is followed by a two-pass drilling operation to produce the counterbore and the bolthole.
verb[with object] Back to top
Drill a counterbore in (an object).
- The end of the sleeve inside the mount was shortened and counterbored to accommodate the 0.16 NA beam.
- If the wood is thicker than three-fourths of an inch, you can either substitute longer screws or counterbore the interior surface of the door or drawer so that the screw head is recessed into the wood.
- It is an optional tiebar style with mounting holes drilled and counterbored for 1/4 inch SHCS.
Definition of counterbore in:
- British & World English dictionary
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.
Most popular in the UK
Most popular in Canada
Most popular in Australia
Most popular in Malaysia
Most popular in Pakistan