Chicago-Latrobe
Chicago-Latrobe 49721 Taper Length Drill Bit 21/64 in HSS Black Oxide 118°
A 21/64 inch high-speed steel drill bit with a 118° radial point and black oxide finish for general-purpose drilling
- TypeDrill Bits
- High-speed steel construction withstands heat during drilling
- 118-degree radial point centres the bit without a pilot hole
- Black oxide finish resists corrosion and reduces chip welding
- 21/64-inch diameter suits precise metalworking tasks
Chicago-Latrobe 49721 Taper Length Drill Bit
This Chicago-Latrobe 49721 taper length drill bit is made from high speed steel with a black oxide finish. It features a 118 degree radial point angle designed for general purpose drilling. The flute length suits deeper hole applications in metal, wood or plastic. It is a new cutting tool intended for professional and workshop use.
21/64 inch HSS bit for deeper holes
This bit suits machinists and maintenance technicians who need the extra reach of a taper length design. It is not for buyers who require a shorter jobber length bit for standard drilling tasks. Users needing a split point for self-centring without a centre punch should look at a different point geometry. It also does not suit applications requiring cobalt alloy or carbide cutting edges.
Highlights
- High-speed steel construction withstands heat during drilling
- 118-degree radial point centres the bit without a pilot hole
- Black oxide finish resists corrosion and reduces chip welding
- 21/64-inch diameter suits precise metalworking tasks
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
Questions about this item
When will the 118° point on this 21/64 in HSS bit need resharpening?
The 118° point angle dulls gradually; resharpen when feed pressure rises or hole quality drops, typically after drilling many holes in steel.
What stops this taper-length bit from running continuously in deep holes?
Chip evacuation becomes the limiting factor; the long flutes pack with swarf, so you must withdraw frequently to clear them.
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