STRAIGHT
SHANK
DRILLS
S O M T A P 1 2 C A T A L O G U E
46
Drill Terminology
TANG
MORSE TAPER
SHANK
RECESS
OVERALL
LENGTH
BODY
LENGTH
FLUTE
LENGTH
DIAMETER
HELIX
ANGLE
SHANK
LENGTH
BODY
CLEARANCE
DIAMETER WEB
THICK-
NESS
CIRCULAR
LAND
FLANK
CHISEL
EDGE
LIP
LENGTH
POINT
ANGLE
LIP
CLEARANCE
ANGLE
DETAILED VIEW OF LIP CLEARANCE
CHISEL
ANGLE
HEEL
POINT
SLOW
STANDARD
QUICK
TYPES OF SPIRAL (OR HELIX) ANGLES
Note : Selecting the correct Drill
Refer to the SOMTA User Guide for detailed information.
Continued on next page...
