This jobber length drill bit is made of high speed steel and has a 0.2813 inch diameter, 1.3125 inch long shank. It is for use with aluminum, brass, bronze, cast iron, copper, steel, and meets ASME standards, DIN 338. This 1898 series jobber length drill bit has a bright (uncoated) finish, and has fractional inch measurements. It is non-coolant through with a 4¼ inch length. Plus it has two 2.9375 inch spiral flutes, a straight shank, and 118 Degrees radial point.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.2812 in
Material - MachiningHigh Speed Steel
Drill Bit Point Angle118 Degrees
Coolant FedNon-Coolant Through
Flute TypeSpiral
Flute Length2.9375 in
Helix Angle21 Degrees /34 Degrees
Spiral DirectionRight Hand
Shank Dia.0.2813 in
Overall Length4.25 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 Number1898
Drill Bit Size9/32 in
Measurement SystemFractional Inch
Finish - MachiningBright (Uncoated)
Drill Bit Point TypeRadial Point
Number of Coolant Holes0
Number of Flutes2
Maximum Drilling Depth1.125 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1.3125 in
Depth:Dia. Ratio4xD
Drill Point Length0.0845 in
Series1898
Aircraft DrillNo
Sheeter DrillNo
Material Grade - MachiningGeneral Purpose
Primary Material Application ISO CodeK, N, P
Country of OriginUnited States
(subject to change)