Chicago-Latrobe
Chicago-Latrobe 42017 135° Split Point Drill Bit 17/64 in
A 17/64 inch high-speed steel jobber drill bit with a 135° split point and TiCN coating for accurate starts and longer life
- TypeDrill Bits
- MaterialHAWA
- 135° split point starts on contact without wandering
- 17/64 in jobber length reaches deep holes in one pass
- TiCN coating on high-speed steel resists wear and heat
- Wide-land parabolic flute clears chips faster from the cut
- Fractional 0.2656 in decimal size fits standard chucks directly
Chicago-Latrobe 42017 135° Split Point Bit
The Chicago-Latrobe 42017 is a 135-degree split point drill bit sized at 17/64 inch. It is manufactured from High Speed Steel with a TiCN coating for extended tool life. The jobber length design suits general-purpose drilling tasks in metal and other materials. This accessory fits standard drill chucks for professional and workshop use.
Suited for metal drilling, not coolant-fed systems
This bit serves machinists and maintenance teams needing accurate hole starts without a centre punch. The split point geometry reduces walking on hard surfaces. It lacks coolant holes, so it is not suited for high-volume production lines requiring through-tool coolant delivery. Buyers needing internal coolant feed should select a different drill design.
135-degree split point angle defines self-centring
The 135-degree point angle combined with the split point tip determines how the bit engages the workpiece. This geometry provides immediate centring and reduces thrust force during drilling. The decimal equivalent is .2656 inch. Match this angle and diameter to your application requirements for correct performance.
Highlights
- 135° split point starts on contact without wandering
- 17/64 in jobber length reaches deep holes in one pass
- TiCN coating on high-speed steel resists wear and heat
- Wide-land parabolic flute clears chips faster from the cut
- Fractional 0.2656 in decimal size fits standard chucks directly
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
At what point angle does the 135° split point start to lose cutting efficiency under sustained drilling?
The 135-degree split point is designed to reduce walking and maintain centering during continuous use, with the high-speed steel HAWA material resisting wear at the cutting edges.
How much heat builds up in the TiCN-coated flute when drilling all day without coolant?
The TiCN coating on the high-speed steel HAWA body lowers friction and dissipates heat during extended dry drilling, while the parabolic flute clears chips to reduce temperature rise.
What shank size must my drill chuck accept for the 17/64 in jobber bit to fit?
The jobber-length bit has a straight shank matching its 17/64 inch diameter, so a standard three-jaw chuck that opens to at least 0.2656 inch will hold it securely.
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