CAT 50 Blanks cat 40 retention knob but it can be tightened

but it can be tightened to a smaller size

We also include a spare torx screw

All collet chuck adapters come with a collet nut

Three coolant channels

Our stub arbor holders are produced from mill certified

CAT 50 Blanks cat 40 retention knob but it can be tightenedOur V Flange CAT 50 blanks are machined from mill certified AISI 4150 preheated treated alloy steel. The body is hardened to 28 32 RC to allow for easy machinability and post flame hardening for those special pockets and features. Manufactured in accordance with ASME B5. 50 standard (Per ISO 1947) the 7 24 taper is hardened to 56 60 RC and precision ground to AT 3 standards; providing optimal radial repetitive accuracy to your CNC machining center's