This general purpose jobber length drill bit is made of high speed steel and has a 7.2 mm diameter, 40 mm long shank. It is for use with aluminum, brass, bronze, cast iron, copper, steel, and meets ASME standards, DIN 338. This 1899 series jobber length drill bit has a black oxide finish, and has metric measurements. It is non-coolant through with a 4.2913 inch length. Plus it has two 2.7165 inch spiral flutes, a straight shank, and 118 Degrees conventional point.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.2835 in
Material - MachiningHigh Speed Steel
Drill Bit Point Angle118 Degrees
Coolant FedNon-Coolant Through
Flute TypeSpiral
Flute Length2.7165 in
Helix Angle21 Degrees /34 Degrees
Spiral DirectionRight Hand
Shank Dia.0.2835 in
Overall Length4.291 in
Drill Length ClassJobber Length
Drill Bit GroupingIndividual
StandardsASME B94.11M, DIN 338
Drill Diameter Tolerance+0.0000 in/-0.0010 in
Web ThinningThinned
Primary Material ApplicationAluminum, Brass, Bronze, Cast Iron, Copper, Steel
List Number1899
Drill Bit Size7.2 mm
Measurement SystemMetric
Finish - MachiningSteam Oxide
Drill Bit Point TypeRadial Point
Number of Coolant Holes0
Number of Flutes2
Maximum Drilling Depth1 1/8 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1.5748 in
Depth:Dia. Ratio4xD
Drill Point Length0.0852 mm
Series1899
Aircraft DrillNo
Sheeter DrillNo
Material Grade - MachiningGeneral Purpose
Primary Material Application ISO CodeK, N, P
Country of OriginUnited States
(subject to change)
