Cobalt wire gage drill, 135 degree split point. Designed to drill tough, high-tensile materials and work-hardening materials. Drill maintains its cutting ability even at temperatures exceeding 1,000 degrees F.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.055
Material - MachiningCobalt
Drill Bit Point Angle135 Degrees
Coolant FedNon-Coolant Through
Flute TypeSpiral
Flute Length7/8 in
Helix Angle28 Degrees
Spiral DirectionRight Hand
Shank Dia.3/64 in
Overall Length1 7/8 in
Drill Length ClassJobber Length
Drill Bit GroupingIndividual
StandardsNAS 907 Type J
Drill Diameter Tolerance+0.0000 in/-0.0005 in
Web ThinningThinned
Primary Material ApplicationStainless Steel, Steel, Titanium, Tool and Die Steel
List Number550
Drill Bit Size#54
Measurement SystemWire
Finish - MachiningStraw/Bronze
Drill Bit Point TypeSplit Point
Number of Coolant Holes0
Number of Flutes2
Maximum Drilling Depth7/32 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1.0000 in
Depth:Dia. Ratio4xD
Drill Point Length0.0114 in
Series550
Aircraft DrillYes
Sheeter DrillNo
Material Grade - MachiningM42
Primary Material Application ISO CodeM, P, S
Country of OriginUnited States
(subject to change)