Cleveland Golf
Cleveland Golf Jobber Drill 10mm Cobalt 135° NAS 907
Cobalt steel jobber drill with 135° split point for precision drilling in tough materials
- TypeAngle, Pitch & Slope Locators
- 10 mm cobalt steel resists heat and wear
- 135° split point starts on contact without walking
- NAS 907 Grade J meets aerospace inspection requirements
- 133 mm overall length reaches deep holes
- 87 mm flute clears chips efficiently
Precision 10 mm Cobalt Drill
The Cleveland Golf Jobber Drill is a 10 mm cobalt steel bit built to NAS 907 Type J standards. Its 135 degree split point reduces walking and starts holes cleanly in hard metals. The straw-bronze finish identifies the heavy-duty cobalt grade. Right-hand spiral flutes clear chips efficiently during deep drilling.
Replaces Worn High-Speed Bits
Switch to this bit when standard high-speed steel drills dull quickly in stainless steel, titanium or high-temperature alloys. The cobalt substrate holds hardness at elevated temperatures, extending life between resharpening. The upgrade pays off in repeated production runs where bit changes cost downtime.
Fits Standard 10 mm Chucks
The 10 mm straight shank seats directly in any drill press or hand drill accepting 10 mm capacity. No reduced shank or sleeve is needed. The 87 mm flute length and 133 mm overall length reach through thick plate while leaving clearance for the chuck. Non-coolant-through design suits flood or mist lubrication.
Highlights
- 10 mm cobalt steel resists heat and wear
- 135° split point starts on contact without walking
- NAS 907 Grade J meets aerospace inspection requirements
- 133 mm overall length reaches deep holes
- 87 mm flute clears chips efficiently
Specifications
| Brand | Cleveland |
|---|---|
| Type | Angle, Pitch & Slope Locators |
Questions about this item
What chuck size fits the 10 mm shank on this NAS 907 drill bit?
The shank diameter is 10.00 mm, so a 10 mm drill chuck or collet is required for a secure grip.
How do I start the hole correctly with the 135° split point?
Apply steady pressure at the centre mark; the 135° split point self-centres and cuts on contact without a centre punch.
When should I replace this cobalt jobber drill?
Replace the bit when the cutting lips show visible rounding or when drilling 10 mm holes requires noticeably more feed force.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
