Cleveland Golf
Cleveland Golf Cobalt Jobber Drill 13mm 135° NAS 907
A 13 mm cobalt jobber drill with 135° split point, NAS 907 grade, 151 mm overall length and 101 mm flute
- TypeAngle, Pitch & Slope Locators
- 13 mm cobalt drill resists heat in tough metals
- 135° split point starts cleanly without wandering
- NAS 907 Grade J meets aerospace quality standards
- 151 mm overall length reaches deeper holes
- 101 mm flute clears chips efficiently
Cobalt Jobber Drill 13 mm NAS 907
This cobalt steel jobber drill bit measures 13 mm in diameter and conforms to National Aerospace Standard 907 Type J. The split point geometry with a 135-degree angle enables self-centring starts in hard alloys. Right-hand spiral flutes run 101 mm along a 151 mm overall length.
NAS 907 limits for deep-hole drilling
The standard defines heavy-duty dimensions and split-point tolerances for aerospace applications, yet the bit lacks coolant-through capability. Chip evacuation relies solely on the spiral flutes, so drilling depths beyond the 101 mm flute length require frequent peck cycles to prevent packing.
13 mm shank diameter fixes the holder choice
The shank matches the 13 mm cutting diameter, so the tool only fits collets, chucks or sleeves sized for that exact shank. Buyers needing reduced-shank compatibility for smaller holders cannot use this bit without an adapter.
Highlights
- 13 mm cobalt drill resists heat in tough metals
- 135° split point starts cleanly without wandering
- NAS 907 Grade J meets aerospace quality standards
- 151 mm overall length reaches deeper holes
- 101 mm flute clears chips efficiently
Specifications
| Brand | Cleveland |
|---|---|
| Type | Angle, Pitch & Slope Locators |
Questions about this item
Should I pick the 13 mm cobalt drill or a smaller size for my job?
Choose the 13 mm size when the hole must be exactly 13.00 mm (0.5118 in); select a smaller diameter only if the specification calls for a different size.
What does the 135-degree split point do once the bit is in the drill press?
The 135-degree split point centres itself on contact, reduces walking, and lowers thrust force when drilling hard metals such as stainless steel or titanium alloys.
How does the NAS 907 Type J standard affect the way this bit performs?
NAS 907 Type J defines the heavy-duty geometry — 151 mm overall length, 101 mm flute length, and 13 mm shank — ensuring the bit meets aerospace-grade dimensional tolerances and cobalt-steel material requirements.
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