The TOP DOG Counterbore is offered in both English and Metric sizes and is designed to drill and counterbore in one operation with sufficient clearance for a socket head cap screw. They have a precision ground straight shank for standard chucking or can be used with a collet holder.
Specifications and Price can be found below.
To place an order, you can find a list of our distributors here.
| Drill Diameter | Shank Diameter | Overall Length | Head Diameter | Pilot Length | Screw | Cutting Tool Material | Part Number | Quantity | Sale Price | Metric/SAE |
|---|---|---|---|---|---|---|---|---|---|---|
| .138 | 1/4 | 1-7/32 | 0.220 | 1/4 | #5 | HSS | 530-1000 | 1 | $8.80 | SAE |
| .150 | 1/4 | 1-7/32 | 0.242 | 1/4 | #6 | HSS | 530-1005 | 1 | $9.18 | SAE |
| .178 | 5/16 | 1-15/32 | 0.290 | 9/32 | #8 | HSS | 530-1010 | 1 | $9.41 | SAE |
| .200 | 5/16 | 1-1/2 | 0.332 | 5/16 | #10 | HSS | 530-1015 | 1 | $9.92 | SAE |
| .280 | 7/16 | 1-3/4 | 0.406 | 3/8 | 1/4 | HSS | 530-1020 | 1 | $11.56 | SAE |
| .340 | 1/2 | 1-15/16 | 0.490 | 3/8 | 5/16 | HSS | 530-1025 | 1 | $12.46 | SAE |
| .406 | 5/8 | 2-11/32 | 0.593 | 15/32 | 3/8 | HSS | 530-1030 | 1 | $13.89 | SAE |
| 5.55 | 7.94 | 38.10 | 9.13 | 7.94 | 5MM | HSS | 540-1010 | 1 | $11.62 | SAE |
| 6.30 | 7.94 | 39.69 | 10.71 | 9.52 | 6MM | HSS | 540-1015 | 1 | $13.68 | SAE |
| 8.73 | 11.11 | 46.04 | 13.49 | 11.11 | 8MM | HSS | 540-1020 | 1 | $14.21 | SAE |
| 10.32 | 12.70 | 52.39 | 16.66 | 14.29 | 10MM | HSS | 540-1025 | 1 | $15.93 | SAE |