KM Tools Tool-less Countersink Replacement Bits (Presale)

These custom-designed replacement bits for the KM Tool-less Countersink feature high-quality HSS drills and counter bores with high-quality brazed carbide cutters. Order them as a discounted package or individually. Note that brazing may be a different color than the steel, and strong welds may be visible.

Note: The Katz-Moses Counter Sink Body with the ⅜” countersink and 3mm drill bit is SHIPPING NOW, and the preordered replacement countersinks and drill bits SHIP SEPARATELY in 6–8 weeks.

Specifications:

• Max counterbore depth: .375” or 9.5mm

• Available Bits:

• ¼” Countersink x 2mm Drill does #3 to #6 Screws

• ⅜” Countersink x 3mm Drill does #6 to #10 Screws

• ½” Countersink x 3.5mm Drill does #7 to #16 screws

• Countersink angle (⅜” bit): 82°

• Custom drill bit made of HSS

• Carbide cutters on countersink

Excellent for drilling: Natural woods, Plywood, Acrylic, Chipboard, Manufactured boards, MDF, Aluminum/non-ferrous (with coolant), Composite Decking Materials.

Jonathan’s Hot Take:

We recommend using our bits, but the body accepts any counterbore with a ¼-28 thread. You can add replacements from McMaster-Carr or elsewhere for counterboring aluminum and steel. Please see the instructions for assembly, cleaning, and disassembly. This countersink accurately handles everything from tiny #3 brass screws to #16 large socket head cap screws and makes cutting clean holes for plugs super easy. Countersinks and drill bits are consumable, so avoid hitting knots, screws, nails, or anything that can cause breakage to the carbide or drill bit.

My favorite plug cutters can be found here

Need help? If you have any issues or questions, reach our team at support@kmtools.com.

Available Variants: 

• All Sizes (3 Pack - of each size)

• 1x ¼” Countersink x 2mm Drill

• 1x ⅜” Countersink x 3mm Drill 

• 1x ½” Countersink x 3.5mm Drill

• 3 X ¼” Countersink x 2mm Drill (3 Pack)

• 3 X ⅜” Countersink x 3mm Drill (3 Pack)

• 3 X ½” Countersink x 3.5mm Drill (3 Pack)

• 1 X ¼” Countersink x 2mm Drill (1 Pair Countersink and Drill Bit)

• 1 X ⅜” Countersink x 3mm Drill (1 Pair Countersink and Drill Bit)

• 1 X ½” Countersink x 3.5mm Drill (1 Pair Countersink and Drill Bit)

• 1 X ¼” Countersink (1 Countersink)

• 1 X ⅜” Countersink (1 Countersink)

• 1 X ½” Countersink (1 Countersink)

• 1 X 2mm Drill (1 Drill Bit for use with ¼” Cutter)

• 1 X 3mm Drill (1 Drill Bit for use with ⅜” Cutter)

• 1 X 3.5mm Drill (1 Drill Bit for use with ½” Cutter)