Best Metric Countersink Drill Bits in 2026

【 Exquisite workmanship】Durable taps are made of high speed steel, which can ensure sharp, fast execution and retain strength and efficiency. The surface is treated with a titanium alloy, which greatly improves the cutting performance of the drill, is more wear-resistant and prolongs the service life.

【Ergonomic design】The product portfolio includes SAE and metric sizes, so it has high versatility. Each tap drill is engraved with a label, which is convenient for you to choose the size that suits you. The convenient ¼-inch (6.35mm) hex shank has a tapered end to prevent excessive knocks. Back taper exceeds the tap to prevent over-drilling and damage to the thread.

【High efficiency 】 They are taps with drilling function, three-in-one operation, which can drill, tap, deburr and counter holes on copper, brass, aluminum, metal sheet and plastic at the same time, so as to quickly , Complete work completely, greatly save processing steps and time costs, and improve work efficiency.

COMBINATION TAP/DRILL BIT: Completes hole drilling, tapping, deburring, and countersinking in a single operation with a power drill to save time and labor

TAPS A VARIETY OF MATERIAL: Built to tap up to 10-gauge metal including mild steel, copper, brass, and aluminum

OPTIMUM PERFORMANCE: Back-tapered beyond tap design prevents thread damage from over-drilling, and high-quality hex shank ensures a strong connection to the drill chuck

Material: Titanium Combination Drill taps are made of HSS 4341, High hardness, rustproof, solid and durable; Each tap drill is engraved with a size making, which is convenient for you to choose the size that suits you.

Easy Use: Fast replacement composite cone, uses drill edged principle. Drilling and tapping in one, one-step processing, greatly save processing steps and time costs, improve working efficiency.

Metric: M3x0.5, M4x0.7, M5x0.8, M6x1, M8x1.25, M10x1.5.Shank:1/4 inch (6.35mm) hex quick-change shank, fit Electric hand drill, impact drill, bench drill, electric screwdriver and other tap machines.

[What You Will Have] Set of 6 metric tap drill bit set M3x0.5 M4x0.7 M5x0.8 M6x1 M8x1.25 M10x1.5 Short size is not easy to shake and can drill accurately

[Easy Use]Fast replacement composite cone uses drill edged principle Drilling and tapping in one, one-step processing, which can drill, tap, deburr and counter holes on wood, copper, brass, aluminum, sheet metal and plastic greatly save processing steps and time costs, improve working efficiency

[Material] HSS4341 (high-speed steel) + titanium coating. Each tap drill is engraved with a size making, which is convenient for you to choose the size that suits you

【Step Drills and Cone Drill】3 piece 5/9/14 step drills (4-12/20/32mm) and 1 piece cone drill (8-20mm). Laser marking of step size provide convenient and accurate drilling

【Countersink Drill Bits】6 piece countersink drill bits: 6.3, 8.3, 10.4, 12.4, 16.5, 20.5mm - 90° point, three cutting edges, ideal for deep countersinking

【High Quality】All drills are HSS Titanium coated, come with 1/4" (6.35mm) hex shank, and are precision ground, heat treatment, and hardened for consistently accurate drilling or enlarging holes into sheet & non-ferrous metals, wood and plastics

Update plastic box packaging Imperial units 6PCS：1/8"(3.175mm)、5/32"（3.97mm）、3/16"（4.76mm）、1/4"（6.35mm）、5/16"（7.94mm）、3/8"（9.53mm）

Suitable for Low Hardness Materials Such as Wood, Aluminium Plate, Plastic, or Sheet Iron (thickness of less than 3mm).

Back tapered beyond tap to prevent thread damage from over-drilling

[Easy Use]Fast replacement composite cone uses drill edged principle Drilling and tapping in one, one-step processing, which can drill, tap, deburr and counter holes on wood, copper, brass, aluminum, sheet metal and plastic greatly save processing steps and time costs, improve working efficiency

[Material] HSS4341 (high-speed steel) + titanium coating. High speed steel is designed to ensure sharp, fast execution and withholds strength and efficiency. Each tap drill is engraved with a size making, which is convenient for you to choose the size that suits you

[Quick Change] 1/4 inch Hex Shank fits into all power tools more easily and securely, especially for locking into quick change chuck. Convenient ¼” hex shank features a tapered end to prevent over-tapping and includes a quick-change adapter for easy size change

【High quality material】Made of high quality HSS with nano blue coating, high hardness, anti-rust, has excellent for capability and durability.This drill bits set can quickly drill, tap, deburr and countersink.

【Perfect size】Our Drill Tap Bits Set contains six sizes, namely Metric: M3x0.5, M4x0.7, M5x0.8, M6x1, M8x1.25, M10x1.5，Shank:1/4 inch (6.35mm ) hex shank. It can be used for tapping various threads, making your work more convenient.Each tap drill is engraved with its size convenient for you to choose the suitable size with a glance.

【Drilling and tapping in one】Fast replacement composite cone, uses drill edged principle.Complete hole drilling, tapping, deburring and countersinking in one operation save processing steps and time costs, improve working efficiency.

Shape: 7pcs 1/4 inch Shank Titanium Combination Drill and Tap Set, Metric M3*0.5mm (2pcs), M4*0.7mm, M5*0.8mm, M6*1.0mm, M8*1.25mm, M10*1.5mm, It is not easy to shake and can drill accurately.

Multi-purpose: These drill tap bits are must have if you fabricate a lot; you can use the in aluminum, wood, plastic, iron, and so on, They’re sharp, and easy to use. Fit Electric hand drill, impact drill, bench drill and tap machines.

Easy to Use: Each tap drill is engraved with its size convenient for you to choose the suitable size with a glance. A tapered end on hex shank can prevent excessive knocks; Back taper exceeds the tap to prevent over-drilling and damage to the thread.

DRILL AND TAP 2 IN 1 - Drilling holes and taping threads in one bit and one operation to save time, money and effort

HSS-CO AND TIAIN FINISH - Made of M35 grade cobalt steel and coated with Titanium Aluminum Nitride(TiAIN), exceptionally oxidation resistant and hard, to easily penetrate hard metals.

SELF-CENTERING - Pilot X-shape self-centering split point provides excellent drilling accuracy and precision; High quality hex shank to ensure strong connection to drill chuck

COUNTERSINK DRILL BIT SET & WOOD PLUG CUTTERS - Included 2 Pieces #8(11/64") and #12(7/32") Adjustable Countersink and Counterbore Cutters with HSS M2 Tapered Drill Bit (for up to 3/8" and 1/2" screws head), 2 Wood Plug or Dowel Cutters 3/8" and 1/2" diameter, 1 Hex Wrench. The set is Imperial Units of Measurements (not metric) - Also known as Adjustable Countersink, Countersink Bits For Wood, Dowel Maker, Plug Cutter For Woodworking, Plug Cutter Kit

IMPORTANT TIPS FOR USE - Cutters for Countersink and Counterbore depth are Adjustable for many screws sizes. Developed to complement each other the Adjustable Countersink & Counterbore makes perfect and clean holes to be filled with the Wood Plugs or Wood Dowels. Plug Cutters must be used with Drill Press to have a perfect diameter. The Plug Cutters are not designed to be used with a hand drill, attempting to use a hand drill will cause broken blades or imperfect plugs.

QUICK CHANGE SHANK - The Quick Change 1/4" Shank is Universal size, Compatible with all 1/4" Quick Change Chucks.

【Complete Drill Set】- Package includes7pcs 3-point countersink drill bit, 8pcs wood plug cutters, 6pcs countersink drill bits, 1pcs l-wrench and 1pcs center punch for wood. They can almost meet all brick and wood hole extraction needs of professionals or beginners. They are in metric size, and inches are converted.

【3-pointed Countersink Drills】- 3-point countersink drill bits include 3mm(0.11"), 4mm(0.15"), 5mm(0.19"), 6mm(0.23"), 7mm(0.27"), 8mm(0.31"), 9mm(0.35"), 10mm(0.39") for drilling pilot holes. Drill tips adopt 3-point design for quick and accurate center punching, large chip flute and five edge chamfer allows faster and easier discharge of sawdust.

【Wood Plug Cutters】- Wood plug set includes 4 standard plug cutters and 4 four-tooth chambered cutters. Their shank diameters are 9.5mm(0.37"), tail diameters size are 6mm(1/4"), 10mm(3/8"), 13mm(1/2") and 16mm(5/8").

【3-IN-1 MULTIFUNCTIONAL COMBINATION DRILL TAP】 They are three-in-one operation, which can drill, tap, deburr and counter holes on wood, copper, brass, aluminum, sheet metal and plastic. One-step processing, greatly save processing steps and time costs, improve working efficiency. Deepening the chip flute helps to remove chips and debris on the tap, reducing friction and heat, thereby achieving a faster and cooler drilling process.

【PREMIUM MATERIAL】These high-quality taps are made of high-speed steel(HSS) and have high hardness to achieve sharpness, fast execution and maintain strength and efficiency. It can be applied to all wood, copper, iron and part of thin stainless steel is also applicable. The surface is treated with titanium alloy to improve the cutting performance and wear resistance of the drill , and extending the service life.

【 HIGH VERSATILITY&CONVENIENCE】The product portfolio includes SAE and metric sizes, can meet your various need. Each tap drill is engraved with its size, you can choose the accurate bit without any difficulty.The convenient 1/4" (6.35mm) hex shank has a tapered end to prevent excesssive knocks. Back taper exceeds the tap to prevent over-drilling and damage to the thread. It also comes with a portable storage case you can carry and keep the drill neat and tidy.

29 Pack Woodworking Chamfer Drilling Tool Kit with a Handy Plastic Case– A Versatile tool set that would make a nice gift for woodworker, Dad, DIY lover, home hobbyist. Ideal for wood, particle board, fiberboard, logs, plastic boards, PVC pipes used on hand drill, bench drill and electric drill.

3 Pcs 1/4" Metric Hex Shank HSS Step Drill Bit Set – With titanium coating, it has great heat/ corrosion/ rust resistance. Specification: 3/16''-1/2'', 1/4''-3/4'', 1/8''-1/2''. Suitable for drilling holes within 0.12 inch (Iron Plate, Copper Plate, Aluminum Plate); within 0.2 inch (Wood, PVC sheet, Insulation Boards). Not recommend for hard and brittle materials such as stainless steel, glass, tile floors, walls etc.

7Pcs 3- Pointed Countersink Bit for Wood – Made of high carbon steel with high hardness & abrasion resistance, large chip flute and five edge chamfers can drain sawdust faster and easier(Size include: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm). With 1pc hex L-wrench, you could easily remove and adjust counter sleeve depth and drilling depth.

Cool Christmas Gifts for Dad:Are you searching for a suitable woodworking gift for dad? This Multi function drill tool kits can solve this problem, which Including countersink drill bits, L-wrench, wood plug cutter, step drill bit, center punch

5 Pack HSS Titanium Coating Step Drill Bits: 3/16-1/2'', 1/8-1/2'', 1/4-3/4'', 3/16-7/8'', 1/4-1-3/8'', suitable for sheet metal, wood board, plastic, aluminum alloy, copper, NOT recommended for high carbon steel, hard metal.

7 Pack Countersink Bit for Wood – Made of high carbon steel with high hardness & abrasive resistance, large chip flute and five edge chamfers can drain saw dust faster and easier(Size - 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm). With 1pc hex L-wrench, you could easily remove and adjust counter sleeve depth and drill depth.

✔ PROFESSIONAL AND PERSONAL USE - 13 Pieces drill tap set SAE and Metric Sizes- The tap drill bit set includes SAE and Metric sizes, which are highly versatile. Each tap drill is engraved with a label, which is convenient for choosing the size that suits you. The convenient 1/4-inch (6.35mm) hex shank has a tapered end to prevent excessive knocks. In addition, the back taper exceeds the tap to avoid over-drilling and damaging the thread.

✔SUPERIOR QUALITY - High-Quality Material -Durable taps are made of high-speed steel HSS 4341, which can ensure sharp, fast execution and retain strength and efficiency. In addition, the surface is treated with a titanium alloy, which significantly improves the cutting performance of the drill, is more wear-resistant and prolongs the service life.

✔ PROFESSIONAL AND PERSONAL USE - 13 Pieces SAE and Metric Sizes- The product includes SAE and Metric sizes, which are highly versatile. Each tap drill is engraved with a label, which is convenient for choosing the size that suits you. The convenient 1/4-inch (6.35mm) hex shank has a tapered end to prevent excessive knocks. In addition, the back taper exceeds the tap to avoid over-drilling and damaging the thread.

★★★★★These tap drills are made of high speed steel and feature a nitriding surface finish for high hardness and rust resistance for metric thread tap drills long service life.

★★★★★Drill Bit There are a total of 6 pieces of taps in different sizes from M3 to M10 which you can use to tap various threads; Thread: M3, M4, M5, M6, M8, M10; Pitch: 0.5mm, 0.7mm, 0.8mm, 1.0mm, 1.25mm, 1.5mm.

★★★★★Taps are designed with spiral flutes and the chip clearing process would be better. These taps are used on a machine to do the tapping, generally more accurate because human error is eliminated.

Product Name : Combined drills and countersinks drill bit.

Material : High Speed Steel / HSS 6542 M2.

Feature : Plain type; Metric 60°tip angles; Widely used in produce center holes in components or workpieces which requires machining between centers.

Tap and Drill Bit: Tap thread size: M3 x 0.5, drill bit diameter: 2.5mm / 0.1".High-speed steel tool has high hardness and toughness for wear resistance. Good for general purpose applications.

Spiral Flute Tap: Spiral flute design, upward chip removal, right hand thread cutting. For processing blind holes and sticky materials, tapping aluminum, die steel, stainless steel, bronze, plastics. Titanium coating provides excellent corrosion resistance and wear resistance.

Twist Drill Bit: Spiral chip space design for fast and clean chip removal. Sharp cutting edge provides smooth cutting and no glitches. Cobalt high speed steel tool features high hardness (HRC65-66) and high red hardness, high wear resistance

Set of 6pcs 1/4", 5/16", 1/2", 5/8", 13/16" in inches (6,3mm to 20,5mm in metric) in an strong plastic case.

3 Flute for chip flow smoothly & fast cutting

Material HSS-G. Ground precision drill bit for challenging drilling in metal and steel.

Set of 6pcs 1/4", 5/16", 1/2", 5/8", 13/16" in inches (6,3mm to 20,5mm in metric) in an cardboard box.

3 Flute for chip flow smoothly & fast cutting

Material HSS 4241 with coated. Ground precision drill bit for challenging drilling in metal and steel.

Fine Workmanship: Lathe mill center drills are made of quality M2 HSS, which is high temperature wear resistant, providing the maximum durability than a conventional bits.

60 Degree Blade Angle: 60 degree countersink point for easy starting and high accuracy impact driver, playing a important role of guiding and preparing for grinding.

Spiral Flute Type: The chip groove is designed with a spiral shape to accelerated chip guide.

Tap and Drill Bit: Tap thread size: M5 x 0.8, drill bit diameter: 4.2mm / 0.17". High-speed steel tool has high hardness and toughness for wear resistance. Good for general purpose applications.

Spiral Flute Tap: Spiral flute design, upward chip removal, right hand thread cutting, fast tapping with accuracy. Suitable for processing blind holes and sticky materials, tapping aluminum, die steel, stainless steel, bronze, hard plastics.

Twist Drill Bit: Spiral chip space design for fast and clean chip removal. Sharp cutting edge provides smooth cutting and no glitches. Titanium coating provides excellent corrosion resistance and wear resistance.

Tap and Drill Bit: Tap thread size: M2 x 0.4, drill bit diameter: 1.6mm / 0.06". High-speed steel tool has high hardness and toughness for wear resistance. Good for general purpose applications.

Spiral Flute Tap: Spiral flute design, upward chip removal, right hand thread cutting, fast tapping with accuracy. Suitable for processing blind holes and sticky materials, tapping aluminum, die steel, stainless steel, bronze, hard plastics.

Twist Drill Bit: Spiral chip space design for fast and clean chip removal. Sharp cutting edge provides smooth cutting and no glitches. Titanium coating provides excellent corrosion resistance and wear resistance.