Chicago-Latrobe
Chicago-Latrobe 46617 Jobber Drill Bit 17/64 in Cobalt Split Point
Cobalt jobber drill bit with a 135-degree split point for 17/64-inch holes
- TypeDrill Bits
- MaterialHAWA
- Split-point tip starts drilling on contact without wandering
- Cobalt steel resists heat for longer edge life in tough alloys
- 135-degree point angle reduces thrust needed for each hole
- Jobber length 17/64 in fits standard chucks and drill presses
- Decimal size .2656 in matches precise fractional specifications
17/64-inch Cobalt Jobber Drill Bit
The Chicago-Latrobe 46617 is a cobalt jobber-length drill bit sized at 17/64 inch with a decimal equivalent of .2656. It serves machinists and maintenance technicians who need a durable fractional-inch bit for drilling hard metals such as stainless steel and high-strength alloys. The split-point geometry reduces walking and improves hole accuracy in demanding applications.
Split-point geometry for stiff tooling setups
The 135-degree split point centers the bit without a centre punch, saving time on drill presses and rigid CNC fixtures where workpiece clamping is already fixed. Cobalt construction resists heat buildup during continuous cutting, so the bit stays sharp longer in tough materials. No coolant-through channels are present, so external flood or mist coolant must be supplied by the machine.
Sustained cutting in hard alloys without premature
Under prolonged load the cobalt substrate maintains hardness at elevated temperatures, allowing consistent feed rates through work-hardening steels. The straw-bronze surface finish indicates the heat-treatment condition rather than a coating that can wear away. The jobber-length flute clears chips adequately for through-holes at standard depths, but deep-hole drilling may require peck cycles to prevent packing.
Highlights
- Split-point tip starts drilling on contact without wandering
- Cobalt steel resists heat for longer edge life in tough alloys
- 135-degree point angle reduces thrust needed for each hole
- Jobber length 17/64 in fits standard chucks and drill presses
- Decimal size .2656 in matches precise fractional specifications
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
How does the 135-degree split point affect drilling performance in hard materials?
The 135-degree split point reduces walking and allows faster penetration in tough metals without a centre punch.
Will the cobalt construction handle continuous drilling without overheating?
Cobalt steel retains hardness at higher temperatures, making it suitable for sustained drilling in stainless steel and alloys.
What chuck size is needed to hold the 17/64-inch shank?
A standard 3/8-inch or 1/2-inch drill chuck will grip the 17/64-inch shank securely.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
