Chicago-Latrobe
Chicago-Latrobe 50527 118 Degree Heavy-Duty Extra Long Drill Bit
Extra-long 3/8 inch high-speed steel drill bit with 118-degree notched point and black oxide finish for deep general-purpose machining
- Extra-long reach with 5 1/2 in drilling depth
- 118-degree point angle for general-purpose machining
- High-speed steel construction with black oxide finish
- Notched point design for improved chip clearance
- 28-degree helix angle for efficient material removal
Extra Long 3/8 Inch Drill Bit
The Chicago-Latrobe 50527 is a heavy-duty drill bit designed for general-purpose machining tasks that require extended reach. Its extra-long body allows a maximum drilling depth of 5 1/2 inches, making it suitable for deep-hole applications in metal and wood.
Notched Point and Black Oxide Finish
The 118-degree notched point geometry improves self-centering and reduces walking on the workpiece surface. A black oxide coating adds corrosion resistance and helps retain cutting lubricant during operation for smoother chip evacuation.
28-Degree Helix Angle Constraint
The 28-degree helix angle is optimised for general-purpose material removal rather than specialised high-speed or hard-metal drilling. Users needing faster chip clearance in deep aluminium or aggressive feeds in stainless steel may find the standard geometry less effective.
Highlights
- Extra-long reach with 5 1/2 in drilling depth
- 118-degree point angle for general-purpose machining
- High-speed steel construction with black oxide finish
- Notched point design for improved chip clearance
- 28-degree helix angle for efficient material removal
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
Will the 118-degree point need regrinding after heavy use?
The 118-degree point can be resharpened on a bench grinder or drill doctor when it dulls, extending the bit's service life.
What stops me from drilling deeper than the 5 1/2 inch flute length?
The flute length limits chip clearance; drilling past 5 1/2 inches packs chips and binds the bit.
Does the black-oxide finish cut heat during all-day drilling?
Black oxide reduces friction and helps dissipate heat, but sustained high-speed work still requires cutting fluid and periodic withdrawal.
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