Chicago-Latrobe
Chicago-Latrobe 42795 Y HSS 135° Split Point Drill Bit
High-speed steel jobber drill bit with a 135° split point for accurate starts and a .4040 inch diameter
- TypeDrill Bits
- MaterialHAWA
- 135° split point reduces walking on hard materials
- High-speed steel construction resists heat during extended drilling
- TiAlN coating increases surface hardness for longer life
- Jobber length suits standard drill chucks and general use
- Decimal size .4040 matches letter Y for precise hole diameter
Chicago-Latrobe 42795 Y Drill Bit
The Chicago-Latrobe 42795 is a jobber-length drill bit sized to letter Y with a decimal equivalent of .4040. It is made from high-speed steel with a TiAlN coating and features a 135-degree split point for self-centering starts. The bit is designed for non-coolant-through applications and has zero coolant holes. It suits general-purpose drilling in metal where a split-point geometry is preferred.
Suited for metalworkers needing a .4040 hole
This bit fits machinists and maintenance technicians who require a letter Y size in high-speed steel with a 135-degree split point for accurate hole placement without a centre punch. The TiAlN coating adds wear resistance in steel and cast iron. Buyers who need a different letter or fractional size, a coolant-through design, or a carbide substrate should select another tool. The fixed geometry does not suit applications demanding a specialised point angle for exotic alloys.
Decisive spec: 135-degree split point
The 135-degree split point determines whether this bit matches the drilling method required. It reduces walking on hard surfaces and lowers thrust compared with a standard point, making it the key factor for buyers choosing between point styles for their specific material and machine rigidity. If the process calls for a different point angle or a non-split geometry, this bit will not perform as intended.
Highlights
- 135° split point reduces walking on hard materials
- High-speed steel construction resists heat during extended drilling
- TiAlN coating increases surface hardness for longer life
- Jobber length suits standard drill chucks and general use
- Decimal size .4040 matches letter Y for precise hole diameter
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
Will the 135° split point stay sharp and run cool during extended drilling in steel?
The high-speed steel construction and TiAlN coating resist heat buildup, while the 135° split point reduces thrust and walking for consistent performance during long sessions.
What chuck size do I need to hold the straight shank of this 42795 bit?
A standard three-jaw drill chuck that opens to at least .4040 inch will securely grip the straight shank of this jobber length bit.
Can I use this Y-size bit to follow or enlarge holes started with smaller fractional or numbered drills?
Yes, the .4040 inch diameter fits between common fractional sizes, making it ideal for opening up pilot holes drilled with smaller bits in the same jobber length format.
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