counterbore

(redirected from counterbores)
Also found in: Dictionary, Thesaurus.

counterbore

[′kau̇nt·ər‚bȯr]
(design engineering)
A flat-bottom enlargement of the mouth of a cylindrical bore to enlarge a borehole and give it a flat bottom.
(engineering)
To enlarge a borehole by means of a counterbore.

counterbore

To enlarge a hole to receive the head of a bolt or a nut.
References in periodicals archive ?
She concluded, "All types of tools to cut a wide range of materials can be explored on the Industrial Leaders Group network from tap & die, saw blades, hand tools, lathe centers, keyseat cutters, drills and drilling inserts to all kinds of OEM and customized face mills, end mills, drill blanks, counterbores, countersinks, reamers, bandsaws and other cutting tools.
A pair of holes were drilled vertically through the mounts with counterbores to make sure the screw heads remained below the clamping surface.
I've made many of these counterbores for various projects in the past, and I've found that, for one-time use, it's not necessary to space the flutes very accurately.
As many as a hundred different drills, reamers, taps, counterbores, and countersinks may be required for a fixture base plate.
01mm which allows the machines to handle tight spaces and counterbores.
Bores come in configurations to suit any application, such as pilot bores, finished bores, bores for QD Bushings, taper lock bushings, and counterbores.
Special designs include: counterbores to limit plate-edge thickness (no bevel), segmental for use where solids are entrained in gas or liquid flow, eccentric bore to help pass solids or slurries, and quarter round for viscous media with Reynolds Numbers below 100,000.
The line includes inch size screw shank dowel drills, brad point drills, counterbores, countersinks and center drills.
Cutting tools include drills, broaches, countersinks and counterbores, reamers, hobs, milling cutters, slitting saws, and taps.
The countersink collection also includes counterbores, which create a flat-bottomed upper portion of the pilot hole instead of a tapered opening.
com said in a Nevada press release it recently added to the cutting tools directory various types of slitting saws, angle milling cutters shell end mills and counterbores such as cylinders and blanks.