BTU type drill head (Small diameter, 2 edges) B ra ze d d r i l l h e a d w i t h exte r n a l 2 - s t a r t t h re a d f o r s i n g l e t u b e s y s te m ( STS ) , to ol d ia m ete r ø12.6 - ø 1 5 .5 9 m m , CI CT = 2 DCONMS H (Wrench size) (DCN-DCXh6) DC Cutting edge LF OAL Non-standard products (to be supplied on request) When ordering ISO classifications for grades ISO area BTU-00941 xx.xx 1122 Grade 1122 5 10 15 20 25 30 35 40 Drill head Diameter (mm) Grade 2122 1122 e.g. Designation for tool diameter ø13.1 mm: BTU-00941 13.10 1122 1122 1122 1122 Drill tube Designation DCN DCX OAL LF DCONMS H Designation Dia. (mm) BTU-00941 xx.xx 12.6 13.1 ST0094 11 43 41.9 9.6 10 BTU-00942 xx.xx 13.11 13.6 ST0094 11 43 41.9 9.6 10 BTU-00951 xx.xx 13.61 14.1 ST0095 12 43 41.8 10.6 11 BTU-00952 xx.xx 14.11 14.6 ST0095 12 43 41.8 10.6 11 BTU-00961 xx.xx 14.61 15.1 ST0096 13 43 41.7 11.6 12 BTU-00962 xx.xx 15.11 15.59 ST0096 13 43 41.7 11.6 12 Reference pages: Standard cutting conditions → 20, Drill tube (STS) → 16 12 www.tungaloy.com