4Pcs Cylindrical Shank 90 Degree 0 Flute HSS Countersink Deburring Bit Set for Metal Drilling

4Pcs Cylindrical Shank 90 Degree 0 Flute HSS Countersink Deburring Bit Set for Metal Drilling, Chamfer Countersink Deburring Drill Bits Set Cutting Metal Tool, M42 M35 HSS Countersink Drill Bits 90 Degree, Countersink HSS Drill 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

4Pcs Cylindrical Shank 90 Degree 0 Flute HSS Countersink Deburring Bit Set for Metal Drilling  Specifications
Size 2-5mm, 5-10mm, 10-15mm, 15-20mm
Material High Speed Steel ( Cobalt5%-M35, Carbide Steel , Carbon Steel 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 Tin-Coated (White , Black and White, Black, Black and Yellow are Available)
Package 4Pcs in Wood Case (Plastic Case, Tin Box, Double Blister Card are Available)

Fast Chip Removal: This countersunk head deburring drill is made of 90° high-speed steel and adopts a through groove to remove chips, which can quickly remove chips and prevent blockage of the workpiece.
Applicable Pores: Our deburring tools are suitable for 2 ~ 5mm, 5 ~ 10mm, 10 ~ 15mm, 15 ~ 20mm. A sharp and precise countersink can be realized.

Eliminate chatter and vibration – all tips are angled at 90° for sharp and precise countersinks. The cutting edge is hardened and polished to improve sharpness. Chatter-free three-cutting edge design, with staggered cutting teeth to ensure free chip flow and fast chatter-free cutting.
The drill is made of high-speed steel and coated with super-hard titanium alloy, which is durable, high temperature resistant and can be used for a long time.

Features
1.This bit should use the bench drill , it is easy to shake and it will affect the chamfering effect if you use the hand drill.
2.High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance.
3.Ideal for cutting through metal, wood and plastic (hardness <25 degrees)
4.Round shanks allow use with a wide variety of toolholding systems.
5.Used for workpiece circular aperture chamfering or cone hole

Standard Countersink Angle in Different Uses
There are several countersink angles, and they all have different uses. However, below are the most common countersink angles and their uses.

standard countersink angle

60° (Deburring)
The primary purpose of this countersink angle is to remove burrs or sharp edges from the screw area of a metal part. After deburring, the metal has smoother edges.

75° (Rivet Heads)
The rivet head angle is ideal for most rivet head types, including drive, flush, friction-lock, Oscar, self-piercing, structural steel, and solid rivets. AlTiN Single-edged Chamfer Countersink Drill Bit For Deburring Reaming Chamfering

82° and 90° (Countersunk Screw)
There are two angles for countersunk screws. However, the exact angle chosen is a function of the industry countersink screw standard. For instance, the US standard is 82°, while other countries and regions use 90° countersunk screws and the same angles.

120° (Countersinking Sheet Metal Rivets)
The type of rivets used for sheet metals are the thinner and blind Rivets, often requiring a countersinking angle of 120°. This angle requirement is due to their use in joining sheet metals.  0-flute Hex Shank Countersink Drills Set For Woodworking Hole Opener

 

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