DIN335C Straight Shank 90 Degree 3 Flutes HSS Chamfer Metal Countersink Drill Bit

DIN335C Straight Shank 90 Degree 3 Flutes HSS Chamfer Metal Countersink Drill Bit, 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

DIN335C Straight Shank 90 Degree 3 Flutes HSS Chamfer Metal Countersink Drill Bit Specifications
DIN335C Straight Shank 90 Degree 3 Flutes HSS Chamfer Metal Countersink Drill Bit for Metal Chamfering and Deburring
Size 4.3MM – 40.0MM
Material High Speed Steel (Cobalt5%-M35, Carbide Steel , Carbon Steel are Available)
Flute Type 3 Flute (5 Flute, Single Flute, 0 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 White (Black and White, Tin-Coated, Black, Black and Yellow are Available)
Package 1 Piece in One Plastic Box (Double Blister Card is Available)

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.
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

A countersink is a conical hole cut into a manufactured object, or the cutter used to cut such a hole.
A common use is to allow the head of a countersunk bolt or screw, when placed in the hole, to sit flush with or below the surface of the surrounding material (by comparison, a counterbore makes a flat-bottomed hole that might be used with a socket-head screw).
A countersink may also be used to remove the burr left from a drilling or tapping operation thereby improving the finish of the product and removing any hazardous sharp edges.

High-Speed Steel (HSS)
These are drill bits made from High-speed steel. This steel contains chromium, vanadium, cobalt, carbon steel, and tungsten or molybdenum. HSS finds use in countersinking for metals due to their ability to withstand high temperatures (up to 6500C) without losing their hardness.
Besides, drill bits are made from HSS drill metals at speeds 3 times the rate of conventional drill bits.

Carbide
Carbide drill bits or tungsten carbide drill bits are made from a combination of carbon and tungsten. They have superior strength, which gives them use when engineers make a countersink hole in metal.
Drill bits in this category can also operate at high speed due to their ability to absorb heat efficiently. Carbide drill bits can be cut through copper, bronze, steel, aluminum, cast iron, and other abrasive metals.

Cobalt
These drill bits contain high-speed steel alloy with 5 to 8% cobalt. The cobalt content of this drill bit makes it more heat resistant, an important attribute for metal drilling. This heat resistance makes heat damage less likely when using cobalt drill bits.
Besides, cobalt drill bits are ideal for countersinking on hard metals like cast iron and stainless steel.  90 Degree Deburring Tool Set 4 PCS Titanium Coated Drill Bits for Countersink

 

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