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Counterbores

Counterbores create a flat-bottom recess so bolt or screw heads sit cleanly and square. In hole making applications, they’re the go-to when flush seating and alignment matter for assembly quality. Expect better fitment, more consistent seating, and fewer issues during final build.

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Category
Type
Standards
Coating

Showing 2 products

Solid Pilot / Detachable Pilot

Category

HSS

Standards

IS / DIN / BS

Type

Taper Shank

Coating

White / TiN

Solid Pilot / Detachable Pilot

Category

HSS

Standards

IS / DIN / BS

Type

Parallel Shank

Coating

White / TiN

Counterbore tools for accurate recessed holes

A counterbore tool is used when a drilled hole needs a wider, flat-bottomed recess for fastener placement. It helps create a controlled counterbore hole so cap screws, bolts or similar fasteners can sit properly without affecting the surrounding surface or assembly alignment.

Maintaining consistent counterbore hole dimensions

In production and maintenance work, counterbore hole dimensions need to remain consistent across repeated components. Choosing the right counterbore helps control recess depth, diameter and seating quality, especially in applications where fastener fit, surface contact and final assembly reliability are important.

Addison counterbores range

Addison offers HSS counterbores in solid pilot and detachable pilot options, available in taper shank and parallel shank types. Manufactured to IS, DIN and BS standards, the range includes White and TiN coating options for reliable counterbore performance across workshop and industrial hole-making applications.