About Drill Bits
More
Drill Bit Decimal Size Equivalents
More
Drill Bits
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.
Shank | Each | Pkg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | Pkg. Qty. | Pkg. | ||
Metric | |||||||||||||
Black-and-Gold Oxide High-Speed Steel | |||||||||||||
| 1.2 mm | 0.0472" | 48mm | 19mm | Round | 1.2mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | __ | 000000 | 00 |
| 1.25 mm | 0.0492" | 48mm | 19mm | Round | 1.3mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 000000 |
| 1.3 mm | 0.0512" | 48mm | 19mm | Round | 1.3mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 1.35 mm | 0.0531" | 48mm | 19mm | Round | 1.4mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1.4 mm | 0.0551" | 48mm | 19mm | Round | 1.4mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1.45 mm | 0.0571" | 48mm | 19mm | Round | 1.5mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1.5 mm | 0.0591" | 48mm | 19mm | Round | 1.5mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 1.55 mm | 0.061" | 48mm | 19mm | Round | 1.6mm | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
| 1.6 mm | 0.063" | 48mm | 19mm | Round | 1.6mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | 10 | 000000000 | 00000 |
Uncoated High-Speed Steel | |||||||||||||
| 1.2 mm | 0.0472" | 48mm | 25.4mm | Round | 1.2mm | Standard | __ | Steel, Iron, Stainless Steel, Aluminum, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 1.25 mm | 0.0492" | 48mm | 22.2mm | Round | 1.3mm | Standard | __ | Steel, Iron, Stainless Steel, Aluminum, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 1.3 mm | 0.0512" | 48mm | 22.2mm | Round | 1.3mm | Standard | __ | Steel, Iron, Stainless Steel, Aluminum, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 1.35 mm | 0.0531" | 48mm | 22.2mm | Round | 1.4mm | Standard | __ | Steel, Iron, Stainless Steel, Aluminum, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 1.4 mm | 0.0551" | 48mm | 22.2mm | Round | 1.4mm | Standard | __ | Steel, Iron, Stainless Steel, Aluminum, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 1.5 mm | 0.0591" | 48mm | 22.2mm | Round | 1.5mm | Standard | __ | Steel, Iron, Stainless Steel, Aluminum, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 1.6 mm | 0.063" | 48mm | 22.2mm | Round | 1.6mm | Standard | __ | Steel, Iron, Stainless Steel, Aluminum, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
Chip-Clearing Cobalt Steel Drill Bits
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.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated drill bits.
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 | ||||||||||
| 1.6 mm | 0.063" | 48mm | 22mm | Round | 1.6mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 00000 |
| 1.65 mm | 0.065" | 48mm | 22mm | Round | 1.65mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 0000 |
Titanium-Nitride (TiN) Coated Cobalt Steel | ||||||||||
| 1.5mm | 0.0591" | 48mm | 22mm | Round | 1.5mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 0000 |
Cobalt Steel Left-Hand Drill Bits
With better heat and wear resistance than high-speed steel, cobalt steel bits can run up to 25% faster and have a longer tool life. Also known as reverse-flute bits, the flutes spiral in the opposite direction of other bits. Use in counterclockwise drilling applications such as removing broken screws. These bits are maintenance length, also known as mechanics’ length. They are shorter and more rigid than jobbers’ bits but longer than short-length bits. The split point keeps the bit centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Specifications Met | Each | |
Metric | ||||||||||
Uncoated Cobalt Steel | ||||||||||
| 1.5 mm | 0.0591" | 48mm | 22mm | Round | 1.5mm | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | NAS907 Type J | 0000000 | 00000 |