This number 12 jobber drill bit features two spiral flutes and a 135 Degrees point angle. It has a flute length of 2.313 inches, an overall length of 3.5 inches, and a diameter of 0.189 inches. This non-coolant through drill bit is made of high-speed steel.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.189
Material - MachiningHigh Speed Steel
Drill Bit Point Angle135 Degrees
Coolant FedNon-Coolant Through
Flute TypeSpiral
Flute Length2 5/16 in
Helix Angle21 Degrees /34 Degrees
Spiral DirectionRight Hand
Shank Dia.3/16 in
Overall Length3 1/2 in
Drill Length ClassJobber Length
Drill Bit GroupingIndividual
StandardsNAS 907 Type B
Drill Diameter Tolerance+0.0000 in/-0.0007 in
Web ThinningThinned
Primary Material ApplicationAluminum, Brass, Bronze, Copper, Steel
List Number2222
Drill Bit Size#12
Measurement SystemWire
Finish - MachiningBright (Uncoated)
Drill Bit Point TypeSplit Point
Number of Coolant Holes0
Number of Flutes2
Maximum Drilling Depth3/4 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1 3/16 in
Depth:Dia. Ratio4xD
Drill Point Length0.0391 in
Series2222
Aircraft DrillYes
Sheeter DrillNo
Material Grade - MachiningHigh Performance
Primary Material Application ISO CodeN, P
Country of OriginUnited States
(subject to change)