Chicago-Latrobe
Chicago-Latrobe 50726 13/64 in 118 Degree Extra Long Drill Bit
Extra-long 13/64 inch drill bit with 118-degree notched point in high-speed steel for deep holes up to 9 inches
- 13/64 inch size for precise fractional drilling
- 118-degree notched point reduces walking on hard materials
- Extra-long 9-inch reach accesses deep or awkward holes
- High-speed steel with black oxide resists wear and heat
- 28-degree helix clears chips efficiently in general-purpose work
Chicago-Latrobe 50726 Extra Long Drill Bit
The Chicago-Latrobe 50726 is a fractional inch drill bit sized at 13/64 in for general purpose machining tasks. It is built from high speed steel with a black oxide finish to resist wear during extended use. The 118 degree notched point helps start holes cleanly in metal and other materials. This bit suits machinists and maintenance crews needing reach beyond standard lengths.
Practical limits of the 118 degree notched point
The 118 degree point angle works well for general purpose drilling but can walk on very hard or curved surfaces without a centre punch. Maximum drilling depth reaches 9 in, so the bit cannot complete through holes in thicker workpieces. The 28 degree helix angle aids chip evacuation yet may clog in deep, sticky alloys if feed pressure is too high. Users needing faster penetration in stainless steel should consider a split point geometry instead.
Build quality and daily implications
High speed steel construction with black oxide coating provides durability for repetitive shop use while reducing friction. The extra long 4xD body allows access to recessed holes but increases deflection risk if the workpiece is not rigidly clamped. The straight shank fits standard three jaw chucks without special adapters. Operators should withdraw the bit frequently to clear swarf and prevent overheating during deep cuts.
Highlights
- 13/64 inch size for precise fractional drilling
- 118-degree notched point reduces walking on hard materials
- Extra-long 9-inch reach accesses deep or awkward holes
- High-speed steel with black oxide resists wear and heat
- 28-degree helix clears chips efficiently in general-purpose work
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
Should I pick the 13/64 in size or a different diameter for my job?
Choose 13/64 in when the hole must be that exact fractional diameter; the bit is sold in this single size so match it to your drawing or tap chart.
What does the 118 degree point angle do once the bit is in the drill?
The 118 degree angle with notched point centres quickly in steel and general-purpose metal, giving a clean start without a centre punch.
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