Boring/Counterboring with spiral-fluted counterbore.    From Wordnik.com.  [3. Preparation for reaming] Reference

Figure 5 Counterboring with the piloted counterbore.    From Wordnik.com.  [1. Purpose of centring, drilling and counterboring/countersinking] Reference

The spiral-flute counterbore (see Fig. 11) is often applied.    From Wordnik.com.  [6. Centring, drilling and counterboring or countersinking] Reference

Cheese head screws are countersunk with a piloted counterbore.    From Wordnik.com.  [9. The Technological Steps of Making Threaded Joints] Reference

Counterboring/countersinking with counterbore/countersink and turning tool.    From Wordnik.com.  [8. Counterboring/countersinking with counterbore/countersink and turning tool] Reference

Counterboring/countersinking with counterbore/countersink and turning tool7.    From Wordnik.com.  [7. Drilling with the drill and boring with the boring tool (turning tool)] Reference

Counterboring/countersinking with counterbore/countersink and turning tool3.    From Wordnik.com.  [3. Preparation of centring, drilling and counterboring/countersinking] Reference

Counterboring/countersinking with counterbore/countersink and turning tool8.    From Wordnik.com.  [8. Counterboring/countersinking with counterbore/countersink and turning tool] Reference

Counterboring/countersinking with counterbore/countersink and turning tool2.    From Wordnik.com.  [2. Types and application of centring, drilling and counterboring/ countersinking tools] Reference

Counterboring/countersinking with counterbore/countersink and turning tool6.    From Wordnik.com.  [6. Centring with the turning tool] Reference

Counterboring/countersinking with counterbore/countersink and turning tool5.    From Wordnik.com.  [5. Centring with the centre drill] Reference

Counterboring/countersinking with counterbore/countersink and turning tool4.    From Wordnik.com.  [4. Centring with the centre square, centre bell and height gauge] Reference

Counterboring/countersinking with counterbore/countersink and turning tool1.    From Wordnik.com.  [1. Purpose of centring, drilling and counterboring/countersinking] Reference

Does the trainee centre the hole exactly below the counterbore/countersink?.    From Wordnik.com.  [1. Objectives and contents of practical vocational training in the working techniques of “Drilling, Countersinking and Counterboring”] Reference

Did the trainee countersink/counterbore both sides of a through hole properly?.    From Wordnik.com.  [1. Objectives and contents of practical vocational training in the working technique of “Manual Reaming”] Reference

Combination tools are possible here as well (piloted counterbore, step counterbore).    From Wordnik.com.  [6. Centring, drilling and counterboring or countersinking] Reference

Does the trainee select the exact rotational speed for the counterbore/countersink?.    From Wordnik.com.  [1. Objectives and contents of practical vocational training in the working techniques of “Drilling, Countersinking and Counterboring”] Reference

Did he set the correct rotational speed and were counterbore diameter and depth correct?.    From Wordnik.com.  [1. Objectives and contents of practical vocational training in the working technique of “Manual Reaming”] Reference

Along the dividing line the trainee has to drill and counterbore/countersink several holes.    From Wordnik.com.  [1. Objectives and contents of practical vocational training in the working techniques of “Drilling, Countersinking and Counterboring”] Reference

Counterboring/countersinking with counterbore/countersink and turning tool Institut fr berufliche Entwicklung e.    From Wordnik.com.  [Chapter 1] Reference

When working with the counterbore/countersink, a relatively low speed rate is to be selected to avoid chatter marks (scratches, grooves).    From Wordnik.com.  [8. Counterboring/countersinking with counterbore/countersink and turning tool] Reference

Internal side-cutting tool (boring tool) or spiral-fluted counterbore (three-lipped twist drill) to produce the hole with machining allowance for reaming.    From Wordnik.com.  [3. Preparation for reaming] Reference

Three-lipped twist drill (spiral countersink) - head counterbore or counterboring tool with pilot.    From Wordnik.com.  [1. Objectives and contents of practical vocational training in the working techniques of “Drilling, Countersinking and Counterboring”] Reference

Ds = diameter of countersink/counterbore.    From Wordnik.com.  [1. Objectives and contents of practical vocational training in the working technique of “Manual Reaming”] Reference

Figure 6 Counterboring with the counterbore.    From Wordnik.com.  [1. Purpose of centring, drilling and counterboring/countersinking] Reference

Step counterbore.    From Wordnik.com.  [6. Centring, drilling and counterboring or countersinking] Reference

Piloted counterbore.    From Wordnik.com.  [6. Centring, drilling and counterboring or countersinking] Reference

Form counterbore.    From Wordnik.com.  [9. Purpose and application of counterboring/countersinking] Reference

Form counterbore or rotary files.    From Wordnik.com.  [1. Objectives and contents of practical vocational training in the working techniques of “Drilling, Countersinking and Counterboring”] Reference

(n » 1400 r.p.m.) counterbore diameter.    From Wordnik.com.  [1. Objectives and contents of practical vocational training in the working technique of “Manual Reaming”] Reference

5 - Form counterbore (special forms) 9.1.    From Wordnik.com.  [9. Purpose and application of counterboring/countersinking] Reference

60° and 90° included angle countersinks, piloted counterbore), reamer, tap.    From Wordnik.com.  [3. Kinds and construction of centring, drilling, counterboring and countersinking, reaming and tapping tools] Reference

(4) head counterbore or counterboring tool with pilot - for fitting of cylindrical cap screws.    From Wordnik.com.  [1. Objectives and contents of practical vocational training in the working techniques of “Drilling, Countersinking and Counterboring”] Reference

Spiral-flute counterbore.    From Wordnik.com.  [3. Kinds and construction of centring, drilling, counterboring and countersinking, reaming and tapping tools] Reference

1 countersink, 2 counterbore.    From Wordnik.com.  [3. Tools] Reference

(5) form counterbore - for different forms.    From Wordnik.com.  [1. Objectives and contents of practical vocational training in the working techniques of “Drilling, Countersinking and Counterboring”] Reference