This jobber length drill bit is made of high speed steel and has a 0.311 inch diameter, 1.6535 inch 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 steam oxide finish, and has metric measurements. It is non-coolant through with a 117mm length. Plus it has two 2.9528 inch spiral flutes, a straight shank, and 118 Degrees radial point.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.315 in
Material - MachiningHigh Speed Steel
Drill Bit Point Angle118 Degrees
Coolant FedNon-Coolant Through
Flute TypeSpiral
Flute Length2.9528 in
Helix Angle21 Degrees /34 Degrees
Spiral DirectionRight Hand
Shank Dia.0.311 in
Overall Length4.606 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 Size7.9 mm
Measurement SystemMetric
Finish - MachiningSteam Oxide
Drill Bit Point TypeRadial Point
Number of Coolant Holes0
Number of Flutes2
Maximum Drilling Depth1 3/16 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1.6535 in
Depth:Dia. Ratio4xD
Drill Point Length0.0934 mm
Series1899
Aircraft DrillNo
Sheeter DrillNo
Material Grade - MachiningGeneral Purpose
Primary Material Application ISO CodeK, N, P
Country of OriginUnited States
(subject to change)