This M42 jobber length drill bit is made of cobalt and has a 7/16 inch diameter, 1 7/16 inch long shank. It is for use with steel, titanium, tool and die steel, and meets ANSI standards , NAS 907 Type J. This 550-TA series jobber length drill bit has a TiAlN finish, and has fractional inch measurements. It is non-coolant through with a 5½ inch length. Plus it has two 4 1/16 inch spiral flutes, a straight shank, and a 135 Degrees split point.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.4375
Material - MachiningCobalt
Drill Bit Point Angle135 Degrees
Coolant FedNon-Coolant Through
Flute TypeSpiral
Flute Length4 1/16 in
Helix Angle28 Degrees
Spiral DirectionRight Hand
Shank Dia.7/16 in
Overall Length5 1/2 in
Drill Length ClassJobber Length
Drill Bit GroupingIndividual
StandardsANSI, NAS 907 Type J
Drill Diameter Tolerance+0.0000 in/-0.0010 in
Web ConstructionTapered
Material Grade - MachiningM42
Primary Material Application ISO CodeM, P, S
Drill Bit Size7/16 in
Measurement SystemFractional Inch
Finish - MachiningTiAlN
Drill Bit Point TypeSplit Point
Number of Coolant Holes0
Number of Flutes2
Maximum Drilling Depth1 3/4 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1 7/16 in
Depth:Dia. Ratio4xD
Drill Point Length0.0906 in
Series550-TA
Aircraft DrillYes
Sheeter DrillNo
Web ThinningWeb-Thinned
Primary Material ApplicationStainless Steel, Steel, Titanium, Tool and Die Steel
List Number550-TA
Country of OriginUnited States
(subject to change)