Detailed Product Description

Center drills(Passing for ISO9001:2000)

Center drills are stiff, stubby little drills used to start holes in the end of workpiece. If you try to drill a hole in a workpiece without using a center drill you will find that the drill will most likely wobble off center and not drill straight into the workpiece.

Standard practice is to first make a cut on the end of the workpiece, then drill a starter hole using a center drill and then drill the hole to the required depth with a standard drill

It's our pleasure to know such information as below:

1)Size or Dimension:Diameter,Total Length,Flute Length,etc;

2)Standard:DIN,ASME/ANSI/ISO,etc;

3)Material: M2(1.3343),M35,M42,M2AL,W9(9341),4341,4241,etc;

4)Treatment:Ti coating,fully ground,milled,black,etc

5)Concrete Using:drilling in steel,wood,concrete,...etc

6)Any other information you want to know.

A type,B type,R type,in inch size ,We can produce HSS center drill bits according to your requirements as per concrete parameter.

Radius Type DIN 333 Form R  ,Right Hand,size 0.5mm-6.3mm;APPLICATIONS:Designed to reduce the bearing of the center hole and provide a protected centering seat while reducing the risk of breakage . Plain Type Imperial,60 degree & 90 degree Included Angle Right,Drill DIAMETER ,APPLICATIONS:Designed to maintain accurate center holes on long production runs ,or when precise centering is required.    Bell Type Imperial 60 degree & 90 degree Included  Angle Right ,Drill DIAMETER 3/64-3/8.