This number 12 jobber drill bit has a flute length of 52 millimetres, an overall length of 86 millimetres, and a diameter of 4.8 millimetres. This straw coloured drill bit is made of cobalt with a gold oxide finish and has a 135 Degrees point angle.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.189
Material - MachiningCobalt
Drill Bit Point Angle135 Degrees
Coolant FedNon-Coolant Through
Flute TypeSpiral
Flute Length52.00 mm
Helix Angle28 Degrees
Spiral DirectionRight Hand
Shank Dia.4.8 mm
Overall Length86.00 mm
Drill Length ClassJobber Length
Drill Bit GroupingIndividual
StandardsNAS 907 Type B
Drill Diameter Tolerance+0.0000 in/-0.0007 in
Web ThinningThinned
Primary Material ApplicationStainless Steel, Steel, Titanium
List Number550ASP
Drill Bit Size#12
Measurement SystemWire
Finish - MachiningStraw/Bronze
Drill Bit Point TypeSplit Point
Number of Coolant Holes0
Number of Flutes2
Maximum Drilling Depth3/4 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length34 mm
Depth:Dia. Ratio4xD
Drill Point Length0.0391 mm
Series550ASP
Aircraft DrillYes
Sheeter DrillNo
Material Grade - MachiningM35
Primary Material Application ISO CodeM, P, S
Country of OriginUnited States
(subject to change)