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About Drill Bits
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Compare material, finish, length class, and decimal size equivalents.
High-Speed Steel Drill Bits
Shank | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Each | |||
Jobbers' Length | ||||||||||
 Round Shank  Standard | ||||||||||
Black Oxide | ||||||||||
| 78 Ga. | 0.016" | 7/8" | 0.16" | Round | 0.016" | Standard | 2901A256 | 00000 | ||
| 77 Ga. | 0.018" | 7/8" | 0.16" | Round | 0.018" | Standard | 2901A255 | 0000 | ||
| 76 Ga. | 0.02" | 7/8" | 0.15" | Round | 0.02" | Standard | 2901A254 | 0000 | ||
Titanium Nitride (TiN) Coated | ||||||||||
| 78 Ga. | 0.016" | 7/8" | 0.16" | Round | 0.016" | Standard | 29045A838 | 0000 | ||
| 77 Ga. | 0.018" | 7/8" | 0.16" | Round | 0.018" | Standard | 29045A837 | 0000 | ||
| 76 Ga. | 0.02" | 7/8" | 0.15" | Round | 0.02" | Standard | 29045A836 | 0000 | ||
Uncoated | ||||||||||
| 78 Ga. | 0.016" | 7/8" | 0.16" | Round | 0.016" | Standard | 30585A96 | 0000 | ||
| 77 Ga. | 0.018" | 7/8" | 0.16" | Round | 0.018" | Standard | 30585A95 | 0000 | ||
| 76 Ga. | 0.02" | 7/8" | 0.15" | Round | 0.02" | Standard | 30585A94 | 0000 | ||
Short Length | ||||||||||
 Threaded Shank  Split | ||||||||||
Black Oxide | ||||||||||
| 9/64" | 0.1406" | 7/8" | 0.44" | Threaded | 1/4" | Split | 8824A29 | 0000 | ||
| 5/32" | 0.1563" | 7/8" | 0.44" | Threaded | 1/4" | Split | 8824A67 | 0000 | ||
| 11/64" | 0.1719" | 7/8" | 0.38" | Threaded | 1/4" | Split | 8824A76 | 0000 | ||
| 3/16" | 0.1875" | 7/8" | 0.38" | Threaded | 1/4" | Split | 8824A71 | 0000 | ||
| 7/32" | 0.2188" | 7/8" | 0.38" | Threaded | 1/4" | Split | 8824A93 | 0000 | ||
| 1/4" | 0.25" | 7/8" | 0.38" | Threaded | 1/4" | Split | 8824A73 | 0000 | ||
| 30 Ga. | 0.1285" | 7/8" | 0.44" | Threaded | 1/4" | Split | 8824A65 | 0000 | ||
| 27 Ga. | 0.144" | 7/8" | 0.44" | Threaded | 1/4" | Split | 8824A66 | 0000 | ||
| 21 Ga. | 0.159" | 7/8" | 0.44" | Threaded | 1/4" | Split | 8824A68 | 0000 | ||
| 20 Ga. | 0.161" | 7/8" | 0.44" | Threaded | 1/4" | Split | 8824A69 | 0000 | ||
| 13 Ga. | 0.185" | 7/8" | 0.38" | Threaded | 1/4" | Split | 8824A79 | 0000 | ||
| 12 Ga. | 0.189" | 7/8" | 0.38" | Threaded | 1/4" | Split | 8824A83 | 0000 | ||
| 11 Ga. | 0.191" | 7/8" | 0.38" | Threaded | 1/4" | Split | 8824A86 | 0000 | ||
| 10 Ga. | 0.1935" | 7/8" | 0.38" | Threaded | 1/4" | Split | 8824A72 | 0000 | ||
Cobalt Steel Drill Bits
 | |
Jobbers' Length Round Shank | Standard |
Shank | Each | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | 1-11 | 12-Up | |||
Jobbers' Length | |||||||||||
Titanium Nitride (TiN) Coated | |||||||||||
| 78 Ga. | 0.016" | 7/8" | 0.19" | Round | 0.016" | Standard | 27995A819 | 00000 | 00000 | ||
| 77 Ga. | 0.018" | 7/8" | 0.19" | Round | 0.018" | Standard | 27995A821 | 0000 | 0000 | ||
| 76 Ga. | 0.02" | 7/8" | 0.19" | Round | 0.02" | Standard | 27995A822 | 0000 | 0000 | ||
Uncoated | |||||||||||
| 78 Ga. | 0.016" | 7/8" | 0.16" | Round | 0.016" | Standard | 3033A296 | 0000 | 0000 | ||
| 77 Ga. | 0.018" | 7/8" | 0.16" | Round | 0.018" | Standard | 3033A295 | 0000 | 0000 | ||
| 76 Ga. | 0.02" | 7/8" | 0.15" | Round | 0.02" | Standard | 3033A294 | 0000 | 0000 | ||
Depth-Limiting Drill Stops
 |
For Drill Bit Size | For Drill Bit Size Decimal Equiv. | Overall Lg. | OD | Hex Key Size for Set Screw | Material | Each | |||
|---|---|---|---|---|---|---|---|---|---|
For Inch Drill Bits | |||||||||
| 3/8" | 0.3750" | 7/8" | 7/8" | 3/32" | Steel | 8865A216 | 00000 | ||
| 25/64" | 0.3906" | 7/8" | 7/8" | 1/8" | Steel | 8865A221 | 0000 | ||
| 13/32" | 0.4063" | 7/8" | 7/8" | 1/8" | Steel | 8865A225 | 0000 | ||
| 27/64" | 0.4219" | 7/8" | 7/8" | 1/8" | Steel | 8865A227 | 0000 | ||
| 7/16" | 0.4375" | 7/8" | 7/8" | 1/8" | Steel | 8865A229 | 0000 | ||
| 29/64" | 0.4531" | 7/8" | 7/8" | 1/8" | Steel | 8865A231 | 0000 | ||
| 15/32" | 0.4688" | 7/8" | 7/8" | 1/8" | Steel | 8865A232 | 0000 | ||
| 31/64" | 0.4844" | 7/8" | 7/8" | 1/8" | Steel | 8865A234 | 0000 | ||
| 1/2" | 0.5000" | 7/8" | 7/8" | 1/8" | Steel | 8865A235 | 0000 | ||
For Metric Drill Bits | |||||||||
| 9.8 mm | 0.3858" | 7/8" | 7/8" | 1/8" | Steel | 8865A218 | 0000 | ||
| 10.0 mm | 0.3937" | 7/8" | 7/8" | 1/8" | Steel | 8865A222 | 0000 | ||
| 11.0 mm | 0.4331" | 7/8" | 7/8" | 1/8" | Steel | 8865A228 | 0000 | ||
| 12.0 mm | 0.4724" | 7/8" | 7/8" | 1/8" | Steel | 8865A233 | 0000 | ||
For Letter Size Drill Bits | |||||||||
| V | 0.3770" | 7/8" | 7/8" | 1/8" | Steel | 8865A217 | 0000 | ||
| W | 0.3860" | 7/8" | 7/8" | 1/8" | Steel | 8865A219 | 0000 | ||
| X | 0.3970" | 7/8" | 7/8" | 1/8" | Steel | 8865A223 | 0000 | ||
| Y | 0.4040" | 7/8" | 7/8" | 1/8" | Steel | 8865A224 | 0000 | ||
| Z | 0.4130" | 7/8" | 7/8" | 1/8" | Steel | 8865A226 | 0000 | ||
Drill-Bit Countersinks for Wood and Plastic
High-Speed Steel
 |
4 Flutes |
The choice if you're countersinking lots of holes, these wear-resistant countersinks cut faster and last longer than carbon steel.
Manufacturer—We source from trusted manufacturers who vet raw materials for purity and use diamond grinding wheels to machine precise edges. This keeps cutting surfaces smooth and free of microscopic burrs. Because our suppliers clean their wheels more often than other manufacturers, each countersink is consistently ground to create uniform holes every time.
Countersinks | Counterbore Collars | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Uncoated | ||||||||||||
Body Dia. | For Drill Bit Size | For Screw Size | Overall Lg. | Mfr. | Each | OD | Wd. | Each | ||||
4 Flutes | ||||||||||||
82° Countersink Angle | ||||||||||||
| 3/8" | 1/8" | No. 5 | 7/8" | W. L. Fuller | 2910A13 | 000000 | 5/8" | 1/4" | 2903A13 | 00000 | ||
| 3/8" | 9/64" | No. 6 | 7/8" | W. L. Fuller | 2910A14 | 00000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 5/32" | No. 7 | 7/8" | W. L. Fuller | 2910A15 | 00000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 11/64" | No. 8 | 7/8" | W. L. Fuller | 2910A16 | 00000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 3/16" | No. 9 | 7/8" | W. L. Fuller | 2910A17 | 00000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 13/64" | No. 10 | 7/8" | W. L. Fuller | 2910A29 | 00000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 7/32" | No. 12 | 7/8" | W. L. Fuller | 2910A31 | 00000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 7/16" | 13/64" | No. 10 | 7/8" | W. L. Fuller | 2910A18 | 00000 | 11/16" | 1/4" | 2903A14 | 0000 | ||
| 1/2" | 5/32" | No. 7 | 7/8" | W. L. Fuller | 2910A32 | 00000 | 3/4" | 1/4" | 2903A15 | 0000 | ||
| 1/2" | 3/16" | No. 9 | 7/8" | W. L. Fuller | 2910A27 | 00000 | 3/4" | 1/4" | 2903A15 | 0000 | ||
| 1/2" | 13/64" | No. 10 | 7/8" | W. L. Fuller | 2910A19 | 00000 | 3/4" | 1/4" | 2903A15 | 0000 | ||
| 1/2" | 7/32" | No. 12 | 7/8" | W. L. Fuller | 2910A21 | 00000 | 3/4" | 1/4" | 2903A15 | 0000 | ||
| 1/2" | 1/4" | No. 14 | 7/8" | W. L. Fuller | 2910A22 | 00000 | 3/4" | 1/4" | 2903A15 | 0000 | ||
90° Countersink Angle | ||||||||||||
| 3/8" | 1/8" | No. 5 | 7/8" | W. L. Fuller | 2910A73 | 00000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 9/64" | No. 6 | 7/8" | W. L. Fuller | 2910A74 | 00000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 5/32" | No. 7 | 7/8" | W. L. Fuller | 2910A75 | 00000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 11/64" | No. 8 | 7/8" | W. L. Fuller | 2910A76 | 00000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 3/16" | No. 9 | 7/8" | W. L. Fuller | 2910A77 | 00000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 13/64" | No. 10 | 7/8" | W. L. Fuller | 2910A89 | 00000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 7/32" | No. 12 | 7/8" | W. L. Fuller | 2910A91 | 00000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 7/16" | 13/64" | No. 10 | 7/8" | W. L. Fuller | 2910A78 | 00000 | 11/16" | 1/4" | 2903A14 | 0000 | ||
| 1/2" | 5/32" | No. 7 | 7/8" | W. L. Fuller | 2910A92 | 00000 | 3/4" | 1/4" | 2903A15 | 0000 | ||
| 1/2" | 3/16" | No. 9 | 7/8" | W. L. Fuller | 2910A87 | 00000 | 3/4" | 1/4" | 2903A15 | 0000 | ||
| 1/2" | 13/64" | No. 10 | 7/8" | W. L. Fuller | 2910A79 | 00000 | 3/4" | 1/4" | 2903A15 | 0000 | ||
| 1/2" | 7/32" | No. 12 | 7/8" | W. L. Fuller | 2910A81 | 00000 | 3/4" | 1/4" | 2903A15 | 0000 | ||
| 1/2" | 1/4" | No. 14 | 7/8" | W. L. Fuller | 2910A82 | 00000 | 3/4" | 1/4" | 2903A15 | 0000 | ||
Carbon Steel
|
4 Flutes |
Stronger than high-speed steel, so it will cut through harder materials. However, high-speed steel is more precise, lasts longer, and cuts at higher speeds.
Manufacturer—We source from trusted manufacturers who vet raw materials for purity and use diamond grinding wheels to machine precise edges. This keeps cutting surfaces smooth and free of microscopic burrs. Because our suppliers clean their wheels more often than other manufacturers, each countersink is consistently ground to create uniform holes every time.
Countersinks | Counterbore Collars | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Uncoated | ||||||||||||
Body Dia. | For Drill Bit Size | For Screw Size | Overall Lg. | Mfr. | Each | OD | Wd. | Each | ||||
4 Flutes | ||||||||||||
82° Countersink Angle | ||||||||||||
| 5/16" | 7/64" | No. 4 | 7/8" | W. L. Fuller | 2785A13 | 000000 | 9/16" | 1/4" | 2903A12 | 00000 | ||
| 3/8" | 1/8" | No. 5 | 7/8" | W. L. Fuller | 2785A21 | 0000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 9/64" | No. 6 | 7/8" | W. L. Fuller | 2785A22 | 0000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 5/32" | No. 7 | 7/8" | W. L. Fuller | 2785A23 | 0000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 11/64" | No. 8 | 7/8" | W. L. Fuller | 2785A24 | 0000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 3/16" | No. 9 | 7/8" | W. L. Fuller | 2785A25 | 0000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 13/64" | No. 10 | 7/8" | W. L. Fuller | 2785A26 | 0000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 3/8" | 7/32" | No. 12 | 7/8" | W. L. Fuller | 2785A27 | 0000 | 5/8" | 1/4" | 2903A13 | 0000 | ||
| 7/16" | 13/64" | No. 10 | 7/8" | W. L. Fuller | 2785A31 | 00000 | 11/16" | 1/4" | 2903A14 | 0000 | ||
| 1/2" | 5/32" | No. 7 | 7/8" | W. L. Fuller | 2785A35 | 00000 | 3/4" | 1/4" | 2903A15 | 0000 | ||
| 1/2" | 3/16" | No. 9 | 7/8" | W. L. Fuller | 2785A37 | 00000 | 3/4" | 1/4" | 2903A15 | 0000 | ||
| 1/2" | 13/64" | No. 10 | 7/8" | W. L. Fuller | 2785A38 | 00000 | 3/4" | 1/4" | 2903A15 | 0000 | ||
| 1/2" | 7/32" | No. 12 | 7/8" | W. L. Fuller | 2785A39 | 00000 | 3/4" | 1/4" | 2903A15 | 0000 | ||
| 1/2" | 1/4" | No. 14 | 7/8" | W. L. Fuller | 2785A52 | 00000 | 3/4" | 1/4" | 2903A15 | 0000 | ||
Chip-Clearing High-Speed Steel Drill Bits
 | |
Jobbers' Length High Helix Flute Round Shank | Standard |
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Flute Type | Type | Size | Drill Bit Point Type | Each | |||
Jobbers' Length | |||||||||||
Uncoated | |||||||||||
| 78 Ga. | 0.016" | 7/8" | 0.16" | High Helix | Round | 0.016" | Standard | 2912A257 | 00000 | ||
| 77 Ga. | 0.018" | 7/8" | 0.16" | High Helix | Round | 0.018" | Standard | 2912A256 | 0000 | ||
| 76 Ga. | 0.02" | 7/8" | 0.15" | High Helix | Round | 0.02" | Standard | 2912A255 | 0000 | ||
Strong-Hold Bit Adapters for Ratchet Wrenches
 |
Set-Screw Bit Holder |
Square Drive Size | For Bit Shank Type | For Bit Hex Shank Size | Overall Lg. | Material | Each | |||
|---|---|---|---|---|---|---|---|---|
Set-Screw Bit Holder | ||||||||
| 1/4" | Hex | 1/4" | 7/8" | Steel | 7229A77 | 00000 | ||
Finger-Tightening Socket Adapters
Impact Square Drive Size Adapters
 |
Ball Detent Socket Retainer |
Convert from one square drive size to another. The female side of the adapter attaches to your wrench; the male side to your socket. These adapters are made to withstand the high torque and force of impact tools.
Square Drive Size (Gender) | Overall Lg. | Material | Color | Socket Retainer Style | Each | |||
|---|---|---|---|---|---|---|---|---|
| 1/4" (Female) × 3/8" (Male) | 7/8" | Magnesium Phosphate-Coated Steel | Black | Ball Detent | 53055A101 | 000000 | ||
