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Dormer Pramet A0228.5 (MID 5966889) is a 135° stub drill bit with an 8.50mm (0.3346") cutting diameter and 37mm flute length. Made from High Speed Steel (HSS) with a standard spiral flute geometry, it meets DIN/ANSI standards. The h8 tolerance and 2.5x usable length ratio suit applications in steel, cast iron, stainless steel, non-ferrous metals, and high-temperature alloys.
MODEL 5966889
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ApplicationAngleIcon_DICT_SEL
Drill point 135°
Basic Standard
DIN/ANSI
Coating
Bright/TiN
Coating property (CTP)
1
Connection diameter - millimeter (DCON MS)
8.5
Cutting diameter - inch (DC)
0.3346
Cutting diameter - millimeter (DC)
8.5
Cutting diameter tolerance class (TCDC)
h8
EDP number
589700
Hand (Cutting direction)
Right
Length chip flute - inch (LCF)
1.4567
Length chip flute - millimeter (LCF)
37
Material
HSS
MID number
5966889
Ordering code ANSI
A0228.5
Overall length - inch (OAL)
3.1102
Overall length - millimeter (OAL)
79
Point Angle (SIG)
135
Shank
Cylindrical shank
Spiral form
Standard Spiral
Usable length (ULDR)
2.5
A022 stub drills are very versatile and are suitable for a wide variety of hand held and machine applications.
They are manufactured from premium High Speed Steel and can be used for drilling a number of different materials including steels, stainless steels and aluminium.
With a titanium nitride coating, you get better performance when drilling harder materials and a longer tool life.
The specially designed 135 degree split point is a great aid to self-centering when drilling by hand – so no more wandering all over the surface of the workpiece – and you also get a more accurate hole with a better quality of finish.
*Note: split point and TiN coated tip not available below 2mm
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