Cleveland
Cleveland 39/64" HSS Black Oxide 118° Jobber Drill Bit
A 39/64 inch high-speed steel jobber drill bit with a 118-degree point and black oxide finish for general-purpose drilling
- TypeDrill Bits
- High-speed steel construction withstands heavy drilling demands
- 118-degree point angle centres quickly in general-purpose materials
- Black oxide finish resists wear and reduces chip welding
- 39/64 inch diameter matches precise fractional sizing needs
- Meets ASME B94.11M-1993 standard for reliable jobber performance
Cleveland 39/64" HSS Jobber Drill Bit
This Cleveland jobber drill bit is made from high-speed steel with a black oxide finish for general-purpose drilling. The fractional 39/64 inch size suits metalworkers and maintenance technicians who need a precise hole diameter. A 118-degree point angle and right-hand spiral flutes provide reliable cutting action in steel and other ferrous materials. The straight shank matches the drill diameter for standard chuck compatibility.
Thermals noise and power draw
As a non-powered cutting tool, this drill bit generates no electrical noise or power draw during operation. Heat produced while drilling depends on the workpiece material, cutting speed and the use of cutting fluid rather than the bit itself. The black oxide finish helps retain lubricant and reduces friction compared to uncoated high-speed steel. Proper feed rates and coolant management keep temperatures in a workable range.
ASME B94.11M-1993 standard compliance
The bit is manufactured to ASME B94.11M-1993, ensuring dimensional consistency for jobber-length twist drills. This standard governs flute length, overall length and shank dimensions so the tool fits predictable workflows. List number 2001G identifies the specific catalogue configuration for reordering. No additional accessories, software or coolant-through features are included with this bit.
Highlights
- High-speed steel construction withstands heavy drilling demands
- 118-degree point angle centres quickly in general-purpose materials
- Black oxide finish resists wear and reduces chip welding
- 39/64 inch diameter matches precise fractional sizing needs
- Meets ASME B94.11M-1993 standard for reliable jobber performance
Specifications
| Brand | CLEVELAND |
|---|---|
| Type | Drill Bits |
Questions about this item
How do I install the Cleveland 39/64 inch HSS drill bit in a drill press chuck, and what step is often missed?
Open the chuck jaws wide enough for the .6094 inch straight shank, insert the bit fully so the shank seats past the jaws, then tighten securely; the step often missed is not seating the shank deep enough, which causes run-out.
What maintenance will the Cleveland 39/64 inch jobber bit need after extended use in steel?
The black oxide finish reduces friction, but the 118 degree radial point will dull; resharpen the cutting lips to the original 118 degree angle using a drill-bit sharpener or bench grinder, and wipe flutes clean to prevent chip packing.
What limit appears first when drilling deep holes continuously with this 39/64 inch bit?
Chip evacuation through the 5.1875 inch spiral flutes becomes the limiting factor; the non-coolant-through design means heat builds up, so retract the bit frequently to clear chips and allow cooling.
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