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Dormer Pramet A1234.2S (MID 7189783) is a stub length drill bit with a 4.2mm (0.1654") cutting diameter. It meets DIN 1897 standard, features a 120° point angle and standard spiral flute geometry. Made from High Speed Steel (HSS), it is suitable for steel and non-ferrous materials. The overall length is 18mm flute length with a 4.2mm shank.
MODEL 7189783
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ApplicationAngleIcon_DICT_SEL
Drill point 120°
Basic Standard
DIN 1897
Coating
Steam Tempered
Connection diameter - millimeter (DCON MS)
4.2
Cutting diameter - inch (DC)
0.1654
Cutting diameter - millimeter (DC)
4.2
Cutting diameter tolerance class (TCDC)
h8
EDP number
47189783
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
7189783
Ordering code ANSI
A1234.2S
Overall length - inch (OAL)
2.1654
Overall length - millimeter (OAL)
55
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
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