Hex-Shank Adjustable Countersink Drill Bit Sets

Quick-change hex-shank countersink drill assemblies with replaceable center drills for clean pilot holes, flush screws and concealed fasteners.

Key specifications

Cutter diameter	3–20 mm
Cutter thickness	0.5–8 mm
Clearance diameter	1.5–10 mm
Clearance length	4–25 mm
Shank diameter	4–20 mm
Overall length	50–75 mm
Flutes	4

Ranges show listed options. Available dimension combinations vary by cutter diameter; see the size charts below.

Standard model range

Select a model and dimensions

1 option

Inquiry selection: Hex-Shank Adjustable Countersink Drill Assembly

Description

Quick-Change Countersink Drills for Woodworking Assembly

The hex-shank design fits common drills and drivers, while the replaceable center drill simplifies maintenance and size changes. The countersink head produces a controlled recess for flush or concealed screw installation.

Range specifications

Shank	1/4 in (6.35 mm) hex shank
Center drill	Replaceable high-speed-steel center drill
Adjustment	Locking screw with service hex key
Typical materials	Solid wood, hardwood, plywood, MDF and particleboard

Typical applications

Pilot drilling and countersinking
Flush screw seating
Hidden screw installation
Furniture, cabinet and panel assembly

Ordering guidance

Send the center-drill diameter, countersink diameter, required drilling depth, screw specification, material and order quantity. Confirm whether replacement drill cores and a service wrench are required.