Tap Extension with Weldon Shank, Type: 6

h6 shank with Weldon flat for use in Weldon/Shrink-fit holders or hydraulic chucks. Long and extra long version. The front end of the extension acts as a collet. The collet is clamped to the tap by hand-tightening the knurled clamping nut. The drive torque is provided by the square drive. The rear part of the extension is to DIN, so that the extension can be mounted in quick-change tapping collets or ER tapping collets with a square drive. Application: For tapping in confined places, such as recesses, offsets, sharp edges on jigs, extremely deep internal threads, or directly into casting walls. Note: Alternative hexagon collet for fixing the tap available on request. for thread nominal Dia d1 DIN 371: M8 for thread nominal Dia d1 DIN 374/376: M11 for thread shank Dia d2: 8 mm Extension Dia D3: 8 mm Extension K2: 6.2 mm Extension L2: 60 mm