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Updated: 06 Apr 2026

10 Best Countersink Drill Bits Stainless-steel

#1 Best Pick
YUENTOEN 6Pcs Countersink Drill Bit Set for Woodworking, HSS M2 Bits Tapered Head with Adjustable Depth Stop and L Shape Wrench, 1/4" Hex Shank Wood Countersink Bit Set with Storage Box (Yellow)

YUENTOEN 6Pcs Countersink Drill Bit Set for Woodworking, HSS M2 Bits Tapered Head with Adjustable Depth Stop and L Shape Wrench, 1/4" Hex Shank Wood Countersink Bit Set with Storage Box (Yellow)

Brand: YUENTOEN
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  • Material: Our M2 HSS countersink bit features a spiral chip flute for rapid cutting; The sharp alloy cutting edges create smooth countersink and counterbore holes
  • 5-Piece Set: This premium carbide drill bit set includes five high-speed steel (HSS) M2 tapered bits in sizes 1/8", 9/64", 6/32" drills+ 3/8” 82° counterbores and 11/64" ,3/16" drills+ 1/2" 82° counterbores; The 1/4” hex shank ensures a secure grip and universal compatibility with most drills, making it perfect for woodwork
  • Depth Adjustable: Achieve precise drilling with our countersink bit, featuring adjustable pilot drill and counterbore depths; Use the included wrench to easily set the depth stop; The plastic free-spinning collar effectively reduces surface marring
  • Compact and Convenient: The lightweight carrying case holds all five countersink bits, a plastic gasket, and an Allen wrench; The design includes a hanging hole for easy storage and transport
  • Widely Used: Working with natural woods, chipboard, man-made boards, plywood, MDF, decking,drywall,and various plastic boards; For best results and smooth edges, operate the countersink at slow speeds, approximately 200 RPM
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#2 Best Value
YUENTOEN Countersink Drill Bit Set, 5Pcs Pilot Drill Bits Depth Adjustable, 90° Wood Hole Countersink Drill with Stop Screw Hole, 8mm Shank

YUENTOEN Countersink Drill Bit Set, 5Pcs Pilot Drill Bits Depth Adjustable, 90° Wood Hole Countersink Drill with Stop Screw Hole, 8mm Shank

Brand: YUENTOEN
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  • The drill bit is made of high-speed steel and tungsten steel; The drill bit body is made of 45# steel base, which is strong and ‌long-lasting
  • Drilling Depth Adjustable:Woodworking drill bit set for wood screws without changing bits; Drilling length can be adjusted for various length screws simply by loosening and tightening the setscrew
  • Different Sizes: 8mm round shank countersink drill bit set included 5 kinds of sizes:2.8 x 8mm, 3.0 x 8mm, 3.2 x 8mm, 3.5 x 8mm, 4.0 x 8mm
  • Three Pointed Design, very suitable for drilling holes, opening range is 2.8-4mm, and adjustable cutting height: 2.5-10.5mm
  • The countersunk drill bit is ideal for woodworking, allowing you to drill perfect countersunk holes for inserting flat or countersunk head screws
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#3 Budget Pick
YUENTOEN 5 Pack Countersink Drill Bit Set for Metal, 1/4 Inch Hex Shank Countersunk Bits, 82 Degree 5 Flute,1/4'' 3/8'' 1/2'' 5/8'' 3/4'' with Bit Holder for Metal Wood and Plastic

YUENTOEN 5 Pack Countersink Drill Bit Set for Metal, 1/4 Inch Hex Shank Countersunk Bits, 82 Degree 5 Flute,1/4'' 3/8'' 1/2'' 5/8'' 3/4'' with Bit Holder for Metal Wood and Plastic

Brand: YUENTOEN
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  • Premium M2 HSS Material: Crafted from industrial-grade M2 high-speed steel, and well-oiled, these countersink drill bits are excellent in tough projects, and ensuring long-lasting durability
  • Precise 82° Countersink Drill Bit: Featuring precision-ground 82° tips, these countersink drill bits are ideal to debur, trim, enlarge and countersink clean and smooth holes in a variety of materials including metals, wood, plastic, and more
  • Five Blades Design with 1/4" Hex Shank: Each countersink drill bit is engineered with five blades, which effectively reduces vibration and extends the service life of the bits
  • Multi-Size Countersink Bits: This set of countersink bits includes 5 different sizes - 1/4"(5.89mm), 3/8"(9.87mm), 1/2"(13mm), 5/8"(15.85 mm), 3/4"(19mm); These bits are available in multiple sizes and come in a convenient plastic storage box
  • Wide Application: Countersink drill bit set for metal enables precise drill and is suitable for most medium hard materials such as metal, wood, softwood, hardwood, mild steel, copper and aluminum, etc.
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#4 Top Choice
ColumPRO 3PCS Cobalt Single-End Countersink Chamfer Tool Set -TiAlN Coated Heavy-Duty M35 90-Degree Countersink Bits for Metal, Stainless Steel, Copper, Wood, Fiberboard,2-5,10-15,15-20MM,1/4"-3/4"

ColumPRO 3PCS Cobalt Single-End Countersink Chamfer Tool Set -TiAlN Coated Heavy-Duty M35 90-Degree Countersink Bits for Metal, Stainless Steel, Copper, Wood, Fiberboard,2-5,10-15,15-20MM,1/4"-3/4"

Brand: ColumPRO
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  • 【Premium Quality】Crafted from M35 Cobalt High Speed Steel with cobalt TiAlN coating, our countersink drill bits boast unparalleled toughness, high temperature threshold and long-term durability, delivering consistently exceptional results.
  • 【Impressive Performance】Used after pre-drilling for screws or deburring holes as well as chamfering the edge of a part, they cut cleanly and are chatter-free. The cone tip assures accurate centering, also the enlarged spiral flute prevents chips from clogging and ejects chips rapidly. Designed to handle tough materials like stainless steel and other high-performance alloys.
  • 【Versatile Application】Our drill bits are compatible for use with a range of drilling machines, table drills, milling machines, cordless drills and impact drivers. Perfect for machinists, DIY enthusiasts and homeowners.
  • 【Portable & Convenient】Our countersink chamfer tools come with individual storage cases for easy portability. Say goodbye to lost bits and restless searches for the right tool.
  • 【Comprehensive Set】This set includes 3 drill bits in varying sizes, with each of the 2-5MM, 10-15MM and 15-20MM countersink chamfer tools included, providing you with a complete package for all your drilling needs.
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#5 Popular Choice
12-Piece Titanium HSS Step Drill Bit Set, Metric Countersink & Cone Drills with 1/4” Hex Shank, Automatic Center Punch and Storage Case for Metal, Wood & Plastic

12-Piece Titanium HSS Step Drill Bit Set, Metric Countersink & Cone Drills with 1/4” Hex Shank, Automatic Center Punch and Storage Case for Metal, Wood & Plastic

Brand: outdoorpal
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  • 【Step & Cone Drill Bits】Includes 3 titanium-coated step drill bits (4–12mm, 4–20mm, 4–32mm) and 1 cone drill (8–20mm). Each bit features laser-etched size markings for quick, precise hole measurement and smooth step transitions—ideal for sheet metal and DIY applications.
  • 【Countersink Drill Set】Comes with 6 high-precision countersink bits (6.3 / 8.3 / 10.4 / 12.4 / 16.5 / 20.5mm, 90° point). Each bit has three cutting edges for fast, clean, and chatter-free results—perfect for deburring, enlarging, or finishing holes in wood, plastic, or soft metals.
  • 【Durable Titanium-Coated HSS】Crafted from premium high-speed steel with a titanium finish for extended lifespan, corrosion resistance, and reduced friction. The 1/4” hex shank fits securely in standard drill chucks and ensures stable, accurate drilling in metal, wood, and plastic.
  • 【Multi-Drill Saw & Automatic Center Punch】The 6mm multi drill saw is compatible with drills, rotary files, and reamers for versatile cutting and shaping. The automatic brass center punch delivers a strong spring-loaded impact for precise hole starting—adjustable for different materials.
  • 【Portable & Organized Storage Case】Comes in a reusable plastic storage box with foam inlay for secure placement and easy access. Compact, ergonomic design keeps bits organized, portable, and protected—ready for any workshop or job site.
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#6 Top Pick
5-pc Countersink Drill Bit Set, 3in1 Woodworking Counterbore Hole Drill Bits for #6 8 10 12 16 Screws, Depth Adjustable M2 Pilot Drill Bits, 82-Degree Chamfer, 1/4” Hex Shank, 2 Allen Wrench

5-pc Countersink Drill Bit Set, 3in1 Woodworking Counterbore Hole Drill Bits for #6 8 10 12 16 Screws, Depth Adjustable M2 Pilot Drill Bits, 82-Degree Chamfer, 1/4” Hex Shank, 2 Allen Wrench

Brand: DKIBBITH
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  • Excellent Performance: Our countersink drill bit set is made of high-quality M2 HSS, designed for superior cutting power and durability, ensuring excellent performance on various materials, including wood, plastic, soft metals, fiberboard, particle board, plywood.
  • Adjustable and Versatile: The 3in1 Woodworking Counterbore Hole Saw Drill Bits set features a standard 1/4 inch hex shank for quick change. An adjustable counter sleeve depth can be easily adjusted with the provided Allen wrench; enables flush screw heads or deeper holes to be covered with matching plugs for professional finish.
  • Multiple Sizes to Meet Your Needs: Our 5 Packs Woodworking Countersink Drill Bits set includes three commonly used sizes of countersink drill bits: #6 (3/32"), #8 (7/64"), #10 (1/8"), #12 (9/64"), and #16 (3/16"). These sizes cater to the needs of cabinet and furniture makers, as well as other woodworking enthusiasts.
  • Easy to Use: These counter sink bits are designed to drill, countersink, and counter-bore in one step, with a counter bore chamfer angle of 82 degrees, countersinking perfect holes for screws in hard and soft wood.
  • Important Tips: 1. Secure your workpiece properly. 2. Use a slow consistent speed while drilling for better control and accuracy. 3. Adjust the counter sleeve depth to achieve the desired results on different materials. 4. Clean and Store the drill bits after each use.
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#7 Top Pick
Countersink Drill Bit Set, M2 Cobalt HSS Countersink Drill Bits 6 Pieces 1/4 Inch Quick Change Hex Shank for Metal, Wood, Stainless Steel, Carbon Steel

Countersink Drill Bit Set, M2 Cobalt HSS Countersink Drill Bits 6 Pieces 1/4 Inch Quick Change Hex Shank for Metal, Wood, Stainless Steel, Carbon Steel

Brand: Matework
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  • HIGH-QUALITY COBALT MATERIALS -- MATEWORK countersink drill bits are crafted from M2 cobalt high-speed steel, Provide double protection fortified with a cobalt coating for enhanced durability, corrosion resistance, and heat resistance.This guarantees reliable performance, even in demanding applications.
  • EFFICIENT CUTTING DESIGN -- With a five-flute design, these drill bits offer superior stability during cutting and efficient debris discharge. This design extends the blade life, ensures accurate cuts, and speeds up the drilling process.
  • VERSATILE APPLICATIONS -- Includes 5 most popular sizes (1/4", 3/8", 1/2", 5/8", 3/4") and 1 special size 5/16". M2 Cobalt Countersink Drill is suitable for stainless steel, carbon steel, iron, copper, aluminum and most other metals as well as wood, plywood, etc.
  • USER-FRIENDLY DESIGN -- Featuring laser-engraved step sizes, our countersink drill bits ensure clear visibility and durability during use. This design enhances convenience and accuracy, streamlining the drilling process.
  • DEDICATED CUSTOMER SERVICE -- While our products undergo rigorous quality inspections, we understand that unforeseen issues may occur. Rest assured, we are committed to providing professional customer service. If you encounter any quality problems, please contact us via Amazon for prompt assistance and replacement.
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#8 Top Pick
TOOLMAYS 6pcs Countersink Drill Bit Set Hss 90 Degree Chamfering Countersink Bits Titanium Coatings Diameter 6.3-20.5 mm for Metal, Wood and Plastic

TOOLMAYS 6pcs Countersink Drill Bit Set Hss 90 Degree Chamfering Countersink Bits Titanium Coatings Diameter 6.3-20.5 mm for Metal, Wood and Plastic

Brand: TOOLMAYS
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  • Complete 6-piece drill bit set: This set comes in six different sizes to choose from -6.3mm, 8.3mm, 10.4mm, 12.4mm, 16.5mm, and 20.5mm
  • High quality and high hardness material: The Toolmays countersunk drill bit kit is made of industrial high-speed steel that complies with ISO 4957-HS, DIN 335-C, DIN74, and DIN75, with extremely high hardness and excellent cutting performance. TiN coated countersunk holes have long-term durability
  • Stronger tensile strength: Our countersunk hole can cut cleanly on materials with tensile strength up to 900N/mm ², without vibration
  • Easy 90 degree countersunk: These drill bits have a 90 degree countersunk angle, making it easy and safe to sink 90 degree holes in wood and soft metal. Whether you are using countersunk screws or fasteners, these drills ensure precise and clean drilling every time
  • Easy to store: The countersunk drill set is securely stored in a durable plastic box, promoting efficient daily organization and ensuring convenient transportation
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#9 Top Pick
YUENTOEN Countersink Drill Bit Set with Adjustable Depth Stop, 4 Reversible Heads & Vertical Pilot Adjustable, 1/4" Hex Shank Quick Change Drilling Tool Kit for Hardened Steel and Woodworking

YUENTOEN Countersink Drill Bit Set with Adjustable Depth Stop, 4 Reversible Heads & Vertical Pilot Adjustable, 1/4" Hex Shank Quick Change Drilling Tool Kit for Hardened Steel and Woodworking

Brand: YUENTOEN
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  • Adjustable Depth: Pilot and counterbore depths are adjustable for precise drilling by using the included wrench to adjust the depth stop and bit. Additional plastic collar minimizes surface damage
  • 9-IN-1 Countersink Drill Bit Set: 1 main body(Aluminium Alloy), 4 driil bits (HSS), 4 reversible countersink heads (HSS) (8 sizes) + 1 countersink bit (HSS), 1 depth stop set, 1 chamfer tool,1 Allen Wrench, Including a storage box. 9 precision hole options, breakthrough for ​hardened steel/stainless alloys
  • 9-Size Quick-Change Efficiency: 50% Faster Than Standard Bits​ Reversible heads flip for instant size switching (8-10*2.8mm/8-10*3mm/8-10*3.2mm/8-10*3.5mm/15mm*90°); spiral design​ clears wood/metal chips 3x faster
  • Sharp And Strong: M2 high speed steel pilot drill bit with helical chip edge ensures fast cutting; sharp alloy steel cutting edge produces smooth countersinks and sink holes
  • Wide Range Of Applications: For natural wood, particleboard, wood-based panels, plywood, mdf, decorative panels, drywall and a variety of plastic panels, Iron. Built-in high-precision bearings for best results and smooth edges, countersinking drills should be operated at slow speeds
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#10 Top Pick
Countersink Drill Bit Set, M35 Cobalt HSS Countersink Drill Bits 6 Pieces 1/4 Inch Quick Change Hex Shank for Metal, Wood, Stainless Steel, Carbon Steel

Countersink Drill Bit Set, M35 Cobalt HSS Countersink Drill Bits 6 Pieces 1/4 Inch Quick Change Hex Shank for Metal, Wood, Stainless Steel, Carbon Steel

Brand: Matework
Read more
  • HIGH-QUALITY COBALT MATERIALS -- MATEWORK countersink drill bits are crafted from M35 cobalt high-speed steel, Provide double protection fortified with a cobalt coating for enhanced durability, corrosion resistance, and heat resistance.This guarantees reliable performance, even in demanding applications.
  • EFFICIENT CUTTING DESIGN -- With a five-flute design, these drill bits offer superior stability during cutting and efficient debris discharge. This design extends the blade life, ensures accurate cuts, and speeds up the drilling process.
  • VERSATILE APPLICATIONS -- Includes 5 most popular sizes (1/4", 3/8", 1/2", 5/8", 3/4") and 1 special size 5/16". M35 Cobalt Countersink Drill is suitable for stainless steel, carbon steel, iron, copper, aluminum and most other metals as well as wood, plywood, etc.
  • USER-FRIENDLY DESIGN -- Featuring laser-engraved step sizes, our countersink drill bits ensure clear visibility and durability during use. This design enhances convenience and accuracy, streamlining the drilling process.
  • DEDICATED CUSTOMER SERVICE -- While our products undergo rigorous quality inspections, we understand that unforeseen issues may occur. Rest assured, we are committed to providing professional customer service. If you encounter any quality problems, please contact us via Amazon for prompt assistance and replacement.
Check latest price on Amazon

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