Pilot Head Diameter Pilot Head Diameter |
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Pilot Length Pilot Length |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About Counterbores
Counterboring—Enlarge the top of an existing hole to create a cylindrical-shaped opening with a flat bottom that acts as a seat for the head of a screw or wood plug.
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Steel Pilots for Changeable-Pilot Counterbores
For technical drawings and 3-D models, click on a part number.
Pilot | ||||
|---|---|---|---|---|
| Head Dia. | Lg. | For Use On | Each | |
Uncoated Carbon Steel | ||||
3/32" Pilot Shank Dia. | ||||
| 3/32" | 3/32" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 000000 | 00000 |
| 1/8" | 1/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 5/32" | 5/32" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 3/16" | 3/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 7/32" | 7/32" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 1/4" | 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
1/8" Pilot Shank Dia. | ||||
| 1/8" | 1/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 5/32" | 5/32" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 3/16" | 3/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 7/32" | 7/32" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 1/4" | 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 000000 | 0000 |
| 5/16" | 5/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 3/8" | 3/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
5/32" Pilot Shank Dia. | ||||
| 3/16" | 3/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 7/32" | 7/32" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 1/4" | 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 9/32" | 9/32" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 5/16" | 5/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 3/8" | 3/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
3/16" Pilot Shank Dia. | ||||
| 3/16" | 3/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 1/4" | 1/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 9/32" | 9/32" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 5/16" | 5/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 11/32" | 11/32" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 3/8" | 3/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 000000 | 0000 |
| 13/32" | 13/32" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 7/16" | 7/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 15/32" | 15/32" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 1/2" | 1/2" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 17/32" | 17/32" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 9/16" | 9/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 5/8" | 5/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
1/4" Pilot Shank Dia. | ||||
| 5/16" | 5/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 3/8" | 3/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 7/16" | 7/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 1/2" | 1/2" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 9/16" | 9/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 5/8" | 5/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 000000 | 00000 |
| 11/16" | 11/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 3/4" | 3/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 13/16" | 13/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
5/16" Pilot Shank Dia. | ||||
| 3/8" | 3/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 7/16" | 7/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 1/2" | 1/2" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 0000 |
| 5/8" | 5/8" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 11/16" | 11/16" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 000000 | 00000 |
| 3/4" | 3/4" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
| 1" | 1" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 00000 |