Drill Bit Size / Cutting Diameter (DC) – Letter / Wire Gauge
#28
Point Shape
Split
Measurement Type
Wire Gage
Shank Type
Straight
Angle
135 Degrees
Connection Diameter Machine Side (DCONMS)
0.141″
Cutting Edge Material
HSSCo
Shape
NAS 907, Type J
Flute Type
Standard
Tool Radius
135 Degrees
Coating
Black Oxide
Series/List #
2340
Coolant Supply Property (CSP)
External
Overall Length (OAL)
2-7/8″
Cobalt – Aircraft Type J Jobber Length Drills • Heavy duty construction • Cobalt steel offers increased hardness, toughness, wear resistance and heat resistance • Recommended for drilling tough, high tensile strength materials that generate higher cutting temperatures including high alloy steels, ferrous castings, titanium, inconel, stainless steels and other difficult-to-drill materials • 135 split point
