Drill Bit Decimal Size Equivalents
More
About Drill Bits
More
Drill Bits
Black Oxide
Black and Gold Oxide
Standard
Split
These jobbers'-length bits have the rigidity and length required for most applications.
Black-oxide and black-and-gold-oxide drill bits produce less friction than uncoated drill bits.
Drill bits with a split point keep centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | Each | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Metric | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
| 7.3 mm | 0.2874" | 109mm | 54.4mm | Round | 7.3mm | Standard | DIN 338 | Steel, Iron, Stainless Steel | 00000000 | 00000 |
Black-and-Gold Oxide High-Speed Steel | ||||||||||
| 7.3 mm | 0.2874" | 108mm | 71.4mm | Round | 7.3mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 |
Chip-Clearing Cobalt Steel Drill Bits
Uncoated
The parabolic spiral flutes lift chips out of the hole, reducing clogging and improving coolant flow. With better heat and wear resistance than high-speed steel, these cobalt steel bits can run up to 25% faster and have a longer tool life. All are jobbers’ length so they have the rigidity and length required for most applications. A split point keeps the bit centered without a pilot hole.
Shank | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Metric—Parabolic Spiral Flute | ||||||||||
Uncoated Cobalt Steel | ||||||||||
| 7.3 mm | 0.2874" | 109mm | 69mm | Round | 7.3mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |