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Dormer Pramet A1233.5S (MID 7189767) is a stub drill bit with a 3.50mm cutting diameter and 18mm flute length. It features a 120° point angle, standard spiral flute geometry, and h8 tolerance. Made from High Speed Steel (HSS) and conforming to DIN 1897, it is suitable for steel and non-ferrous metals.
MODEL 7189767
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ApplicationAngleIcon_DICT_SEL
Drill point 120°
Basic Standard
DIN 1897
Coating
Steam Tempered
Connection diameter - millimeter (DCON MS)
3.5
Cutting diameter - inch (DC)
0.1378
Cutting diameter - millimeter (DC)
3.5
Cutting diameter tolerance class (TCDC)
h8
EDP number
47189767
Hand (Cutting direction)
Right
Length chip flute - inch (LCF)
0.7087
Length chip flute - millimeter (LCF)
18
Material
HSS
Material application
N - Non-ferrous metals, P - Steel and cast steel
MID number
7189767
Ordering code ANSI
A1233.5S
Overall length - inch (OAL)
2.0472
Overall length - millimeter (OAL)
52
Point Angle (SIG)
120
Shank
Cylindrical shank
Spiral form
Standard Spiral
Usable length (ULDR)
1.5
Dormer’s A123 short drill in both fractional and metric sizes is specially designed for drilling thin materials and sheet metal.
Manufactured from High Speed steel, it is suitable for drilling in many materials including steels, stainless steels and aluminium.
The drill has a 120 degree point and a steam oxide finish which stops workpiece material from sticking to the cutting edge of the drill, giving you a better hole finish and more accurate diameter.
The core of the A123 is thinner than normal which helps reduce the amount of force needed when drilling.
A final design feature is the absence of any body clearance on the drill which improves hole roundness when drilling thin material
