Drill America
Drill America 19/64in x 12in Cobalt Aircraft Extension Drill Bit pneumatic accessory
A 19/64 inch cobalt aircraft extension drill bit with a 12 inch overall length and heavy-duty split point for deep-hole drilling
- TypeDrill Accessories
- Extended reach for deep holes with 12 inch overall length
- Cobalt steel resists heat and wear during heavy-duty drilling
- Split point design starts on contact without walking
- 19/64 inch diameter matches precise fastener requirements
19/64-inch Cobalt Aircraft Extension Bit
The Drill America cobalt aircraft extension drill bit measures 12 inches overall with a 19/64-inch diameter. Heavy-duty cobalt steel construction resists heat and wear during extended drilling tasks. The split-point tip reduces walking and starts holes cleanly in metal workpieces.
Sustained-load behaviour
Cobalt alloy retains hardness at elevated temperatures generated by continuous drilling. The 12-inch length reaches deep or awkward holes without excessive pressure. Flute geometry clears chips efficiently during prolonged use. Not suited for buyers needing shorter bits or smaller diameters for confined spaces.
Highlights
- Extended reach for deep holes with 12 inch overall length
- Cobalt steel resists heat and wear during heavy-duty drilling
- Split point design starts on contact without walking
- 19/64 inch diameter matches precise fastener requirements
Specifications
| Brand | Drill America |
|---|---|
| Type | Drill Accessories |
Questions about this item
How much heat does the 12-inch cobalt bit generate when drilling all day?
Cobalt steel dissipates heat better than standard high-speed steel, so the 12-inch bit runs cooler during extended drilling sessions.
What chuck size is needed to hold the 19/64-inch shank?
A 1/2-inch or larger drill chuck is required to grip the 19/64-inch shank securely.
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