Drill America
Drill America 21/32in HSS Black Oxide Jobber Drill Bit
A 21/32 inch high-speed steel drill bit with black oxide coating for general-purpose drilling in metal, wood and plastic
- TypeDrill Accessories
- Precise drilling with 21/32in HSS black oxide construction
- Extended reach via 5-3/16in flute length
- Durable high-speed steel resists wear
- Jobber length design fits standard chucks
21/32 inch HSS jobber bit for general drilling
This 21/32 inch high-speed steel drill bit has a black oxide surface treatment and a jobber length profile. The decimal equivalent is .6563 with a flute length of 5-3/16 and an overall length of 7-1/8. It suits general-purpose drilling in metal, wood and plastic for trade and DIY users.
Practical limits of the jobber length standard
The jobber length design provides a standard reach for common drilling depths but is not intended for deep-hole applications. The black oxide finish aids chip flow and reduces galling in ferrous materials yet offers less wear resistance than coated alternatives. Buyers needing extended reach or high-volume production tooling should consider other lengths or surface treatments.
Highlights
- Precise drilling with 21/32in HSS black oxide construction
- Extended reach via 5-3/16in flute length
- Durable high-speed steel resists wear
- Jobber length design fits standard chucks
Specifications
| Brand | Drill America |
|---|---|
| Type | Drill Accessories |
Questions about this item
Should I choose the 21/32 inch size or a different diameter for my project?
The 21/32 inch bit creates a .6563 decimal equivalent hole; select it when your plans call for that exact diameter, otherwise pick the size matching your required hole.
What does the 5-3/16 inch flute length mean when the bit is in my drill?
You can drill up to 5-3/16 inches deep before the flutes fill with chips, so the hole depth is limited to that length in a single pass.
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