Solid-Pilot Counterbores | McMaster-Carr

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Carbide-Tipped Steel

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Finish

Titanium Nitride (TiN) Coated

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Compliant with Exemptions

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DFARS Specialty Metals

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Alvord-Polk Tool

Mist Cutting Tools

Rock River Tool

Tosco Tool Specialty Company

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356 Products

Counterbores

Oversized Counterbores

Oversized Counterbores

Cut an opening a bit wider than your screw head to prevent binding

Built-In-Pilot Counterbores

Built-In-Pilot Counterbores

The go-to for standard screw-head diameters and thread sizes

Changeable-Pilot Counterbores

Changeable-Pilot Counterbores

Create counterbored holes for screws of different diameters

Built-In-Pilot Counterbore Sets

Built-In-Pilot Counterbore Sets

Center the counterbore to cut close-fitting recesses for a range of screw-head diameters

Oversized Counterbore Sets

Oversized Counterbore Sets

Cut oversized openings for a range of screw-head diameters to prevent binding

Changeable-Pilot Counterbores Sets

Changeable-Pilot Counterbores Sets

Grab whatever counterbore-pilot combo you need to match the diameters of your screw head and pilot hole

Counterbores for High-Profile Rounded-Head Screws

Cut openings for screw heads

Adjustable-Diameter Counterbores

Adjustable-Diameter Counterbores

The blade adjusts to do the same job as several normal counterbores

Mil. Spec. Counterbores for Hydraulic Port Holes

Mil. Spec. Counterbores for Hydraulic Port Holes

Create contoured profiles in holes for leak-proof hydraulic connections

Other Products

Counterbore Pilots

Counterbore Pilots

Align counterbores in the center of drilled holes

Counterbore Insert Holders

Counterbore Insert Holders

Pair with inserts to create flat-bottom holes

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)