China 6PCS HSS Countersink Drill Bit Set

Product Description
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 capscrew).
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.

Product Countersink,Countersink Drill BitMaterialHSS,HSS Al,Carbide etc.Size6.3 8.3, 10.4, 12.4, 16.5, 20.5Degree60°, 90°,120°ProcessFully groundFlutes1,3,4,6ShankStraight,TaperedSurface colorBright finish, black oxide, tin-coated UsageFor drilling metal, aluminum sheet, stainless steel, hard wood etc. CustomizedAvailiable
Fetures of HSS countersink
1. Ideal for chatter-free and burr-free work on sheet metal, nonferrous metal, cast iron, light metals;
2. It's designed for fast shearing and chatterless cuts;
3. It's with an exceptionally fine finish and can be run at maximum speed;
4. The cutting edges quickly center in hole and produce a smaller chip load for chatterless machining;
Specification of HSS Countersink
* 60 degree, grade 75, 82 degrees and 120 degrees are available.
* 3 ends cutting
* Best result at low cutting speed.
* Speed and precision of the hob, removing burrs and chamfer in any materialesincluyendo iron, steel, plastic or wood.
* M35 % HSSCo5 (HSS-E) available to specified requirements
* Surface finish: white, black, titanium coated and aluminum Nitride coated are
* Packaging: Individual packing in plastic or plastic blister
* Countersink set
Art No.: 10HC0202
6PCS HSS Countersink Drill Bit Set
6.3 8.3, 10.4, 12.4, 16.5, 20.5
Art No.: 10HC0201
5-piece countersink set
8.0, 10.0, 12.4, 16.5 and 20.5
Art No.: 10HC0204
4-piece countersink set
2-5, 5-10, 10-15, 15-20
Art No.: 10HC0207
7 piece countersink set
1/4 ", 3/8", 1/2 ", 5/8", 3/4 "
Packing and shipping
6 PCS in metal box or wooden box

Shipping
1. TNT/FedEx/DHL/UPS for samples or under 45KG
weight goods ,Door to Door.
2. By Air or by Sea for batch goods,from airport(seaport) to airport(seaport).
3. Customers specifying freight forwarders or not.
4. Production Time: 3- 7days for samples; 2-3.5
weeks for batch goods.
Company Information
1) We're a direct manufacturer and 100% export to worldwide(USA, Isrel, Jordan, Iran, Thailand,Duabai, South Africa, Kenya, Egypt, Australia, UK, Spain, Brazil, etc)
2) We have around 15 years producing experience.
3) Our product:HSS drill bits, masonry drill, woofd drill ,TCT saw blade, laser welded saw blade, sintered saw blade, diamond segments, diamond polishing and grinding products, cup wheel, core bits and electroplated diamond products, HSS countersink etc.
4) Above 95% customers will place a formal order after testing the samples.
More information about our products, welcome to visit :http://damingtools.en.made-in-china.com/