counterboring

Preparation of centring, drilling and counterboring/countersinking4.

4. Centring with the centre square, centre bell and height gauge Detlef Krechlok 1990

By counterboring/countersinking, bore holes are deburred, precast or predrilled holes are enlarged or their rims worked in such way a that screwed or riveted joints can be made.

9. Purpose and application of counterboring/countersinking 1990

Kinds and construction of centring, drilling, counterboring and countersinking, reaming and tapping tools

3. Kinds and construction of centring, drilling, counterboring and countersinking, reaming and tapping tools Dieter Frank 1990

Types and application of centring, drilling and counterboring/countersinking tools3.

6. Centring with the turning tool Detlef Krechlok 1990

Kinds and construction of centring, drilling, counterboring and countersinking, reaming and tapping tools4.

3. Kinds and construction of centring, drilling, counterboring and countersinking, reaming and tapping tools Dieter Frank 1990

Centring, drilling and counterboring or countersinking7.

3. Kinds and construction of centring, drilling, counterboring and countersinking, reaming and tapping tools Dieter Frank 1990

These operations are carried out as described under "drilling and counterboring/countersinking"; it may also be done before clamping.

7. Technological process of cutting internal threads (tapping) Frank Wenghfer 1990

Purpose of centring, drilling, counterboring and countersinking, reaming and tapping2.

3. Kinds and construction of centring, drilling, counterboring and countersinking, reaming and tapping tools Dieter Frank 1990

The main points of safe boring, drilling, counterboring and thread cutting should be discussed again ..

1. Objectives and Contents of the Practical Training in the Techniques of Making Threaded Joints 1990

Preparation of centring, drilling and counterboring/countersinking4.

5. Centring with the centre drill Detlef Krechlok 1990