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Countersink Drill Bit Set for Steel, 3 Flute 90 Degree HSS Chamfering Tool Bit for Metal Wood Woodworking Metal Working Tool Bit Set, Pack of 6pcs 1/4 1/2

Countersink Drill Bit Set for Steel, 3 Flute 90 Degree HSS Chamfering Tool Bit for Metal Wood Woodworking Metal Working Tool Bit Set, Pack of 6pcs 1/4 1/2

Q: What are the shank diameters?

Dear friend Head Diameter *Shank Diameter * Length 6.3MM: 6.3MM*5MM*37MM 8.3MM: 8.3MM*6MM*40MM 10.4MM:10.4MM*6MM*39MM 12.4MM:12.4MM*10MM*46MM 16.5MM:16.5MM*10MM*47MM Any question ,just feel free to tell us Regards Preamer

Q: How do these perform on stainless steel to deburr holes?

They work good in a2,d2, and stainless 304. I have several types, 60, 82, and 90 deg. I don't run a high rpm though. I use these in a hand drill motor and in my mill. Remember start slow, multi blade with light chip depth will give a good finish. They're though enough to champher an edge also, at least occasionally!

Q: What is the correct speed to avoid the chattering that leaves a very poor finish in the countersink?

Try running them at a higher speed and make sure EVERYTHING is as solidly locked down as possible. good luck

Product ID: 111378099

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Details

Material
High Speed
Cutting diameter
6.3
Finish type
Carbon Steel
Shank type
Round
Cutting angle string
90 Degrees

📏6 precision sizes from 6.3mm to 20.5mm

🔥HSS 4231 steel for heat & corrosion resistance

⚙️3-flute design for smooth chip removal

Frequently Bought Together

Countersink Drill Bit Set for Steel, 3 Flute 90 Degree HSS Chamfering Tool Bit for Metal Wood Woodworking Metal Working Tool Bit Set, Pack of 6pcs 1/4 1/2

7 Pieces Center Drill Bits Set, M2 High Speed Steel 60-Degree Angle Center Drill Bits Kit Countersink Tools for Lathe Metalworking Size 1.0 1.5 2.0 2.5 3.0 4.0 5.0

Countersink Drill Bit Set, 5pc, 1/4" Hex Shank, 82 Degree Countersink Holes for Screws to Sit Flush or Under The Surface of Metal Wood Plastic, Sizes 1/4, 3/8, 1/2, 5/8, 3/4 Inches with Storage Case

Description

🔧 Elevate your craft with precision and power — don’t drill without it!

DI YERS DREAM GIFT - Perfect for professionals and weekend warriors aiming for flawless finishes
VERSATILE SIZE RANGE - Includes 6 popular diameters to tackle a wide variety of metal and wood projects
OPTIMIZED CHIP EVACUATION - One-piece design prevents clogging, boosting your workflow efficiency
BUILT TO LAST UNDER PRESSURE - Crafted from premium HSS 4231 steel for superior heat and rust resistance
EFFORTLESS PRECISION CHAMFERING - 3-flute geometry ensures clean, burr-free edges every time

This 6-piece Countersink Drill Bit Set features high-speed steel (HSS 4231) construction with a 3-flute design for efficient chip removal and durability. Designed for materials under 45HRC like carbon steel, aluminum, and wood, it offers six precise sizes (6.3mm to 20.5mm) to chamfer holes quickly and cleanly. Ideal for professional metalworking and woodworking, this set enhances drilling efficiency and finish quality.

Specifications

Manufacturer	Preamer
Part Number	1
Product Dimensions	10 x 10 x 10 cm; 100 g
Item model number	LK-154565
Colour	Sliver
Finish	Carbon Steel,Hss
Material	High Speed Steel (HSS)
Item Package Quantity	1
Number of Pieces	6
Batteries included?	No
Batteries Required?	No
Item Weight	100 g

Have a Question? See What Others Asked

What are the shank diameters?

do these come only in metric or is imperial available as well?

How do these perform on stainless steel to deburr holes?

What is the correct speed to avoid the chattering that leaves a very poor finish in the countersink?

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