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Counter bores
Addison
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High Speed Steel COUNTER BORES |
Specifications conform |
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Dimensions in Inches |
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Counter bores may be used to square the screw head’s seating surface perpendicular to the axis of the hole, an operation known as spot facing, Counter bores are tools for cutting recessed holes in a work piece, typically on center with a smaller hole. Counter bores are frequently cut in order to allow screw head seating in the recessed hole, so that the screw head does not protrude above the material surface. |
| Dia Of Counter bore | Cutting Edge Length | Overall Length Excluding Pilot | Morse Taper No. | Pilot Dia. |
| 1/4 5/13 3/3 7/16 1/2 |
3/8 7/16 1/2 5/8 3/4 |
3.3/4 4 4.1/4 4.1/2 4.3/4 |
1 1 1 1 1 |
1/8 3/16 7/32 1/4 5/16 |
| 9/16 5/8 11/16 3/4 13/16 |
13/16 7/8 15/16 1 1.1/16 |
5.3/8 5.5/8 5.7/8 5.15/16 6.3/16 |
2 2 2 2 2 |
3/8 7/16 7/16 1/2 9/16 |
| 7/8 15/16 1 1.1/8 1.1/4 |
1.1/8 1.1/4 1.3/8 1.1/2 1.5/8 |
6.7/16 7.7/16 7.1/2 7.3/4 8 |
2 3 3 3 3 |
5/8 5/8 3/4 3/4 3/4 |
| 1.3/8 1.1/2 1.5/8 1.3/4 1.7/8 |
1.3/4 1.7/8 2 2.1/8 2.1/4 |
9 9 9 9 9 |
4 4 4 4 4 |
13/16 7/8 15/16 1 1.1/8 |
| 2 | 2.1/2 | 9 | 4 | 1.1/4 |
All images, specifications and logo belongs to respective owners. They appear here for demonstration only.
Counter bore in HSSCo manufactured as per customer's specifications.
