Countersink Drill Bit Sizes of 2025
Best Choice1
AIMLENTOOL5Pcs Step Drill Bit & 5Pcs Countersink Drill Bit Set, Titanium Coated, HSS Step Bit, 50 Sizes of Step Bit for Metal with Aluminum Case, Multiple Hole Stepped Up Bits for DIY
Main highlights- Widely Application: Our step drill bit with its powerful drilling capability, can process different diameter holes, and can be used on materials such as metal, iron, aluminum, brass, plastic, aluminum alloy, wood, plastic, etc. Suitable for a wide range of household projects.
- Premium Quality: AIMLENTOOL drill bits are made of high speed steel for longer cutting edge life even at extreme temperatures. Step drill set with a titanium coating significantly improves durability and sharpness for less friction and cooler operation,performs well in heat, corrosion and rust resistance.
- Easy Storage and Organization: The drill bit kit is packaged in a sturdy and compact aluminum storage case with a foam layer inside, which can maintain the order and protection of the drill bit, reduce wear, and make it an important supplement to the toolbox.
- Drill Bits Set: This unit step drill bit includes 5 step bit in sizes 3/16-1/2'', 1/8-1/2'', 1/4-3/4'', 3/16-7/8'', 1/4-1-3/8'', effectively replacing 50 sizes of conventional drill bits. Along with a center punch. Additionally, the counter sinker drill bit set in sizes1/4'', 3/8'', 1/2'', 5/8'', 3/4''.
- Craft Design: Counter sinker drill bit set very suitable for sinking 90° holes in wood and soft metal countersunk screws and fasteners. Step drill with 118° split tip and double groove design, increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape easily.
9.9Exceptional
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Value for Money2
FTG USAFTG USA Adjustable Wood Countersink Drill Bit Set 6 Sizes Set with Tapered Drill Bit for Woodworking
Main highlights- Wood drill bit set with adjustable 4 Flute Cutter counter bore chamfer angle 82 degree, smooth countersinking in hard and soft wood, tapered holes for screws. Adjustable countersink drill bit with quality built depth adjustable counter bore attaches to flat on shank with 2 hex screws for controlled pilot hole depth. Best adjustable wood countersink drill bits set ideal for woodworking. Countersink tool set made with countersink bits for wood, FTG 2341P tapered countersink drill bits
- Tapered drill bits pointed tip and wide flute for drilling fast, clean pilot hole, ensures tight fit for screws. Countersink hex drill bit set with tapered drill bit can be replaced with FTG replacement taper drill bits countersink for extended wood bit. Countersink drill bits for wood made to drill, countersink, and counter-bore in 1 step sink counter set. Counter sink bits designed as to work as wood drill bits
- THIRD-PARTY TESTED by US Accredited Lab - HSS M2 Grade 6542 countersink drill bit for wood with tapered drill bits. Wood countersink bit with wider flute shape for increased chip flow. Bits secured with pin Never Come Loose from shank. Drill countersink set with logo brand name laser printed on each countersink bit quick change 1/4" hex shank. Tapered drill bit with countersink set, drill bits secured with pin, FTG 2341P Maximum Torque countersink drill bits with countersinks for wood
- STORAGE CONTAINERS for this set available below on this page at section " Make it a bundle". Counter sinker drill bit set designed in New Jersey by Fair Trade Group USA and Professionally manufactured in China at FTG USA specs. Analysis Report issued by ANAB US Accredited Lab, confirms that drill bits set High Speed Steel Quality countersink bits meet desired specs of HSS M2 Grade 6542, drill bit set harder than HSS 4241 and HSS 4341 used in other similar tapered countersink drill bits
- Countersink drill bit set for wood with tapered drill bit 3rd Party Tested HSS M2, 4 Flute countersink cutter #45 Carbon Steel tapered countersink set 6 sizes drill bits with countersink #4 (7/64"), #6 (9/64"), #8 (11/64"), #10 (3/16"), #12 (7/32"), #14 (1/4") Adjustable wood countersink, 2 Depth Stop Collar, 1 Hex Wrench (1/8" Allen Key). Counter-bore, and wood plugs sizes 1/2" and 3/8". Hex shank compatible with 1/4 inch standard Quick Change chuck including impact drills
9.7Exceptional
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3
EZARCEZARC Countersink Drill Bit Set, 15 PCS Tapered Drill Bits Counter Sink Drill Bit with 2PCS Wood Plug Cutter 1/4" Hex Shank Quick Change for Woodworking with Storage Box
Why we love it
Durable high-speed steel construction.
Precise depth control for professional finish.
Versatile for various woodworking projects.
9.5Excellent
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4
FTG USAFTG USA Tapered Countersink Drill Bit Set 3 Pc #8 (11/64") Tapered Drill Bit Replacement, Countersink Bit Same Size for Wood Countersink Drill Bits
Main highlights- THIRD-PARTY TESTED High Speed Steel M2 countersink drill bit for wood with tapered drill bits. Replacement countersink drill bits with pointed tip and wide flute for drilling fast, clean pilot hole, ensures tight fit for screws. All FTG countersinks hex drill bit sets with tapered countersink bit can be replaced with FTG replacement taper drill bits countersink for extended wood bit. All same size countersink replacement drill bits designed as to work as wood drill bits
- STORAGE CONTAINERS are available at section " Make it a bundle". Replacement counter sinker drill bit set designed in New Jersey by Fair Trade Group USA and Professionally manufactured in China at FTG USA specs. Analysis Report issued by ANAB US Accredited Lab, confirms that drill bits set High Speed Steel Quality countersink bits meet desired specs of HSS M2 Grade 6542, drill bit set harder than HSS 4241 and HSS 4341 used in other similar tapered countersink drill bits
- FTG drill bit replacement set made with tapered countersink bits for wood. Countersink replacement bits set with tapered drill bits. Top Quality 9/64 inch tapered and double flute drill bit; HSS M2 Grade 6542 the most popular High-Speed Steel, for its high toughness, and good cutting edge retention. FTG 2330V2 countersink replacement drill bit set for drill bits with countersink
- Countersink replacement bits made for countersink drill bits for wood. with wider flute for increased chip flow. Replacement drill bits have logo brand name laser printed on each countersink bit quick change 1/4" hex shank. Counter sinker drill bit replacement set, professional FTG drill countersink set Maximum Torque Improved Version 2.0 without pin. Packaging set combination unique design protected by US Copyright Office
- Bit Replacement made with Version 2.0 FTG Maximum Torque has superior connection drill-hex shank without a pin. Replacement tapered counter sinker drill bit set 3 Piece Same Size #8 (11/64") bit replacement Only (Without the 4 Flute cutter counter-bore), made to replace the 11/64” bits of #8 countersink drill bit set for wood
9.4Excellent
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5
FTG USA20% OffFTG USA 3 Pc #6 (9/64") Replacement Tapered Countersink Drill Bit Set All Same Size Countersink Bit Replacement Only
Main highlights- THIRD-PARTY TESTED by US Accredited Lab - HSS M2 Grade 6542 countersink drill bit for wood with tapered drill bits. Replacement countersink drill bits with pointed tip and wide flute for drilling fast, clean pilot hole, ensures tight fit for screws. All FTG countersinks hex drill bit sets with tapered countersink bit can be replaced with FTG replacement taper drill bits countersink for extended wood bit. Countersink replacement drill bits designed as to work as wood drill bits
- STORAGE CONTAINERS for this set available below on this page at section " Make it a bundle". Replacement counter sinker drill bit designed in New Jersey by Fair Trade Group USA and Professionally manufactured in China at FTG USA specs. Analysis Report issued by ANAB US Accredited Lab, confirms that drill bits set High Speed Steel Quality countersink bits meet desired specs of HSS M2 Grade 6542, drill bit set harder than HSS 4241 and HSS 4341 used in other similar tapered countersink drill bits
- Replacement tapered counter sinker drill bit set 3 Piece #6 (9/64") bit replacement Only (without the 4 Flute cutter countersink counter-bore), made to replace the 9/64” bits of #6 countersink drill bit set for wood. Replacement bit countersink with hex shank compatible with 1/4" standard Quick Change chuck including impact drills. All same size replacement tapered drill bit for drill countersink
- FTG drill bit replacement set made with tapered countersink bits for wood. Countersink replacement bits set with tapered drill bits. Top Quality 9/64 inch tapered and double flute drill bit; HSS M2 Grade 6542 the most popular High-Speed Steel, for its high toughness, and good cutting edge retention. FTG 2329 countersink replacement drill bit set for drill bits with countersink
- Countersink replacement bits made for countersink drill bits for wood. with wider flute for increased chip flow. Replacement drill bits have logo brand name laser printed on each countersink bit quick change 1/4" hex shank. Counter sinker drill bit replacement set, professional FTG drill countersink set'. Packaging set combination unique design protected by US Copyright Office
9.3Excellent
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6
EZARC20% OffEZARC Countersink Drill Bit Set, 12 PCS Counter Sink Drill Bit Adjustable, #4, #6, #8, #10, #12, Magnetic Extension bit Holder for Woodworking with Storage Box
Main highlights- 【Versatile Application】Equipped with a 1/4" hex shank, these countersink drill bits are compatible with a wide range of tools, including impact drills, including hand drills, bench drills, and electric drills. Adjustable depth settings accommodate various wood thicknesses, though extended use on hardwood is not recommended.
- 【Upgraded 12-Piece Set】This EZARC countersink drill bit set includes 5pcs Countersink bits (#4, #6, #8, #10, #12), 5pcs Replaceable drill bits, 1pc 60mm Magnetic Extension bit holder, 1pc Allen Wrench,Storage Case.
- 【Unique Two-Flute Design】Featuring a dual-edge cutting design, these countersink drill bits eliminate chatter and ensure smooth, precise finishes. Compared to single-blade bits, they offer faster cutting, ideal for larger or deeper countersinks.
- 【Strong and Durable】Crafted from premium titanium-coated high-speed steel, the countersink bits are perfect for use on both softwood and hardwood. The upgraded chamfer blade with a stepped design minimizes cutting resistance and maximizes durability.
- 【Efficient and Clean Drilling】Designed with sharp blades and an 82-degree countersink angle, these bits deliver fast, clean pilot holes for a snug screw fit. All-in-one drilling, countersinking, and counterboring maximize efficiency.
9.1Excellent
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7
DKIBBITHCountersink Drill Bit Set, 5 Pieces High Speed Steel 82 Degree 5 Flute 6mm Round Shank Mill Cutter Bit Countersink in Sizes 1/4” 3/8” 1/2” 5/8” 3/4” Set with Carrying Case
8.0 worth the money8.0 lasts a long time8.0 Long lifeWhy we love it
1. Versatile: 5 sizes.
2. Precise: 82 tip.
3. Compatible: 1/4 shank.
9.0Excellent
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8
NEIKONEIKO 10218A Countersink Drill Bit Set for Wood and Metal, 1/4” Tri-Flat Shank, 5 Piece Countersink Bits, M2 High Speed Steel
Main highlights- PRECISION MACHINED TIPS: These countersink drill bits come with 1/4" tri-flat shanks with a precision-ground 82-degree tip for sinking holes into wood, machinable metals, mild steel, fiberglass plastic, and more and fit common handheld power drills.
- M2 HSS MATERIAL: Each metal countersink bit is made of high quality M2 HSS material for extended drill bit life and efficiently drills countersinks to help create strong joints between screw and material.
- FIVE-FLUTE DESIGN: Each of the 5 counter sink bits utilizes a five-flute design that reduces vibration for smoother drilling as found in woodworking with a 1/4-inch shank that allows easy gripping.
- BIT SIZES: Each countersink tool set contains 1/4", 3/8", 1/2", 5/8", and 3/4" drill bits that are very commonly used.
- BIT HOLDER CASE INCLUDED: Each countersink drill bit set comes with an aluminum case for carrying and easy storage.
8.8Very Good
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9
JNB ProJNB Pro 5PC Countersink Bits for Steel - Sizes 1/4" 3/8" 1/2" 5/8" 3/4", Metal Working Countersinks, 5 Flute Design 82° M35 HSS 5% Cobalt Grade Bit 1/4" Shank - Ideal for Stationary or Hand Drill
Main highlights- VALUE FOR PRICE. Since these counter sink bits are cobalt grade, they will work excellently and exhibit a longer lifespan in cutting hard metals such as stainless steel, cast iron, brass, copper, aluminum, and other soft metals, as well as any type of wood, especially when you apply cutting fluid for added care to the bits.
- STAYS SHARP FOR LONGER. Sharpness remains even after multiple countersinks; edges stay looking new with clean chips and no chatter as the bits are designed to work with metal, offering excellent performance and heat resistance, and can be used without coolant.
- RIGHT BITS FOR THE RIGHT JOB. Our countersink bit for metal comes in 5 SAE diameters: 1/4", 3/8", 1/2", 5/8", and 3/4". These varying sizes make countersinking easy, providing the right size for every task, whether it's metalwork, DIY, or woodworking projects.
- COUNTERSINK FOR METAL. Made from HSS M35 material, these countersink drill bits are sure to provide smooth and clean countersinks on metals. Use these cobalt conuntersink for steel plates or hinges on drop-top tables, cabinets, and doors; stainless shelving racks with countersunk screws; or general use around the house in aluminum bars and plates, mild steel, Formica countertops, acrylic, and even wood furniture.
- COBALT STEEL. These countersink drill bit set for metal ensure durability as they are made with 5% cobalt steel. Features an 82-degree, 5-flute design they're capable of countersinking in steel, especially when using a hand drill or non-stationary drill where pure carbide bits would chip or break due to changes in drill orientation.
8.5Good
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10
AV Steel10% OffAV Steel Countersink Drill Bit Set, Countersink Bit, HSS4241 Counter Sink, 82 Degree Countersink 1/4'' 3/8'' 1/2'' 5/8'' 3/4'', 5 Flute Pcs for Wood, Plywood, Plastic, Mild Steel with Aluminum Case
Main highlights- Versatile Application: Precision grinding 82° countersink drill bit set. These countersink drill bits are designed for heavy-duty use, creating precise countersink holes that enable screw heads to sit flush and smoothly against the surface of the material.
- Multiple Sizes: The countersink drill bit comes in 5 sizes: 1/4, 3/8, 1/2, 5/8, 3/4 inch, including a aluminum tool storage box, making it easy to select the size and carry it with you. 1/4″ hex shank countersinks are fine for all handheld and stationary drills.
- High Quality: Countersink bits are constructed from industrial-grade high-speed HSS424 steel for enhanced durability. Five-Flute design reduces vibration for smoother drilling and extended life.
- Function: Сountersink bit set can be used to drill holes in most workable metals including plywoods, woods, plastics, and mild steel. This countersink drill bit excels in deburring, chamfering and countersinking tasks across a variety of projects. Chamfering on metal requires pre-punched holes first.
- Customer Service: We provide a lifetime warranty against design, materials, and workmanship defects, along with 24/7 customer service for your peace of mind.
8.4Good
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