Cleveland Golf
Cleveland Golf Jobber Drill 12.5mm Cobalt 135° NAS 2213
A 12.5 mm cobalt jobber drill with a 135-degree split point meets NAS 907 heavy-duty standards
- TypeAngle, Pitch & Slope Locators
- Cobalt steel construction resists heat during heavy-duty drilling
- 135-degree split point starts holes accurately without wandering
- NAS 907 Type J standard meets aerospace quality requirements
- 5 mm diameter with 101 mm flute length suits deep-hole applications
- 151 mm overall length provides reach in confined spaces
Cleveland Golf Jobber Drill 12.5mm
This cobalt steel jobber drill bit measures 12.5mm in diameter with a 135-degree split point. It meets National Aerospace Standards 907 Type J for heavy-duty applications. The right-hand cutting spiral flute design suits professional machinists and maintenance technicians requiring precise hole-making in tough alloys.
Straw bronze finish with 151mm overall length
The straw bronze surface treatment identifies the cobalt composition while reducing friction during operation. A 101mm flute length provides ample chip evacuation space for deeper holes. The 12.5mm shank diameter matches the cutting diameter for direct chucking without reduction sleeves or adapters.
Replaces worn high-speed steel bits in aerospace
Upgrade from standard HSS drills when machining stainless steels, titanium or nickel-based superalloys where heat resistance and edge retention are critical. The split point geometry eliminates centre punching and reduces walking on curved surfaces. Not suited for coolant-through operations or left-hand threading requirements.
Highlights
- Cobalt steel construction resists heat during heavy-duty drilling
- 135-degree split point starts holes accurately without wandering
- NAS 907 Type J standard meets aerospace quality requirements
- 5 mm diameter with 101 mm flute length suits deep-hole applications
- 151 mm overall length provides reach in confined spaces
Specifications
| Brand | Cleveland |
|---|---|
| Type | Angle, Pitch & Slope Locators |
Questions about this item
What does the 135-degree split point on this cobalt drill do for centering?
The 135-degree split point reduces walking and starts the hole on contact without a centre punch.
Will the 12.5 mm shank fit a standard 1/2-inch drill chuck?
The shank is 12.50 mm, slightly larger than 1/2 inch, so it needs a 13 mm or larger capacity chuck.
How do I avoid snapping the bit when drilling 12.5 mm holes in stainless steel?
Use low RPM, steady pressure, and cutting fluid; the cobalt steel handles heat but the 101 mm flutes need chip clearance.
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