Tap Extension with Quick-Release Chuck, Type: 12

Long version. Torque transmission via the square shank. The leading end of the extension is fitted with a quick-release chuck. The rear end of the extension is to DIN, so that the extension can be mounted either in a quick-change tapping head or in an ER collet for taps with a square shank. Advantage: Time-saving exchange of taps with repetition accuracy and quick-change adapter. Almost any combination of extensions available, due to the identical diameter D3 and drive square K2. Application: For tapping in confined places, such as recesses, offsets, sharp edges on jigs, extremely deep internal threads, or directly into casting walls. Suitable for: For mounting in quick-change tapping collets or ER tapping collets with a square drive. for thread nominal Dia d1 DIN 374/376: M20 for thread shank Dia d2: 16 mm Extension Dia D3: 18 mm Extension Dia D4: 26 mm Extension K2: 14.5 mm Extension L2: 49 mm