90 Degree Deburring Chamfering Hole M35 Cobalt Countersink Drill Bit Set

90 Degree Deburring Chamfering Hole M35 Cobalt Countersink Drill Bit Set, M42 M35 HSS Countersink Drill Bits 90 Degree, Countersink HSS Drill Bits, HSS Combined Drill & Countersink Hole Cutters Drilling Bits, Carbide Tipped Countersink Drill Bits Set, Single Flute & Deburring High-speed steel construction with titanium-coated finish for durable, smooth cutting, Woodworking Metalworking & Multipurpose Drill Bits China Supplier Factory Manufacturer

90 Degree Deburring Chamfering Hole M35 Cobalt Countersink Drill Bit Set Specifications
90 Degrees Countersink Drill Bit
Size 2-5mm, 5-10mm, 10-15mm, 15-20mm
Material High Speed Steel ( Cobalt5%-M35,are Available)
Flute Type 0 Flute (3 Flute, 5 Flute, Single Flute, 6 Flute, 7 Flute, Multi Flute are Available)
Cutting Angle 90° (120°, 60 °, 82° are Available)
Shank Type Round Shank (Hex Shank, Taper Shank, Tri-Flat Shank, Weldon Shank, Long Shank are Available)
Surface Finish TiAlN (White , Black and White, Black are Available)

1. The same containing cobalt high speed steel material, the surface after a TiAIN coating, 3 times can prolong service life.
2. The TiAIN coating super high temperature resistance, can be in the case of without coolant, long time use, suitable for dry type high speed cutting.
3. Higher accuracy sharper achieve drilling burr
4. Internal chip removal: To eliminate the phenomenon of flying metal shavings

Features
1. Three-flute designed to reduce clogging, improve clearance and be chatter free
2.High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance.
3.Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications. 6Pcs HSS Countersink Drills Set 90 Degree Countersink Hole Center Punch Tool
4.Round shanks allow use with a wide variety of toolholding systems.
5.Made from industrial grade High-Speed Steel for increased durability.
6.Ideal for wooden planks,fiberboard,particle board,plywood,plastic,alumiumn board ,pcb board and more

Where Is Countersinking Used?
Countersinking is used to ensure that flat head screws or fasteners sit flush against the workpiece. Countersinking is used, to make conical holes that match the angled contour on the bottom of flat head screws with conical heads. 6Pcs Countersink Drill Bits Set 1/4” Hex Shank HSS 3 Flute

What Is a Countersink Drill Bit?
A countersink drill bit, also known as a fluted countersink, is a specially designed drill bit that creates a region in the metal that corresponds to the shape of the screw head – which is countersunk. The “V” or conical shape created by the countersink drill bit enables the screw to contact the material on both sides of the screw. HSS Drill Bit Countersink Angle 90° 20mm Head 5 Flutes

As a result, the screw and the metal form a robust and secure connection. The screw can then be positioned flush with the surface of the metal thanks to the countersink bits’ “V” form. The heads of the screws will lie flush or slightly below the surface when fully tightened. 4 Pieces 90° Angle HSS Countersink Drill Bit Set

 

Size	Range	Head Size	Overall Length	Shank Diameter
5#	2-5mm	10mm	45mm	6mm
10#	5-10mm	14mm	48mm	8mm
15#	10-15mm	21mm	65mm	10mm
20#	15-20mm	28mm	85mm	12mm
25#	20-25mm	35mm	102mm	15mm
30#	25-30mm	44mm	115mm	15mm
35#	30-35mm	48mm	127mm	15mm
40#	35-40mm	53mm	136mm	15mm
50#	40-50mm	60mm	166mm	20mm