39 Ps/Set HSS Interchangeable Pilot Counterbore Sets In Fitted Wooden Box, #500S-A000
- Complete with pilots in fitted case.
- Each set includes:13 counterbores-26 pilots
- Counterbores: 1/4″ to 1″ by 16ths
- Pilots:
1/8″, 5/32″, 3/16″ and 1/4″ with 3/32″ shanks
3/16″, 7/32″, 1/4″, 9/32″ and 5/16″ with 5/32″ shanks,
1/4″, 5/16″, 3/8″, 7/16″ and 1/2″ with 3/16″ shanks,
5/16″, 3/8″, 7/16″, 1/2″, 9/16″ and 5/8″ with 1/4″ shank
3/8″, 7/16″, 1/2″, 9/16″, 5/8″, and 3/4″ with 5/16″ shank - Soild wood excellent packing
- Straight shank
The 13 pcs interchange counterbore and their correspondent pilot chart
Counterbore Size |
Pilot Hole Size |
Range of Pilot Sizes |
No. of Flute |
Shank for Counterbore |
Overall Length |
1/4″ |
3/32″ |
1/8″-3/16″ |
3 |
15/64″ |
3-13/16″ |
5/16″ |
3/32″ |
1/8″-1/4″ |
3 |
19/64″ |
3-13/16″ |
3/8″ |
5/32″ |
3/16″-5/16″ |
3 |
5/16″ |
4-1/16″ |
7/16″ |
5/32″ |
3/16″-3/8″ |
3 |
3/8″ |
4-1/16″ |
1/2″ |
3/16″ |
1/4″-7/16″ |
3 |
7/16″ |
4-5/16″ |
9/16″ |
3/16″ |
1/4″-1/2″ |
3 |
7/16″ |
4-5/16″ |
5/8″ |
3/16″ |
1/4″-9/16″ |
3 |
1/2″ |
5-1/8″ |
11/16″ |
3/16″ |
1/4″-5/8″ |
3 |
1/2″ |
5-1/8″ |
3/4″ |
1/4″ |
5/16″-11/16″ |
3 |
1/2″ |
5-3/8″ |
13/16″ |
1/4″ |
5/16″-3/4″ |
3 |
5/8″ |
5-3/8″ |
7/8″ |
1/4″ |
5/16″-13/16″ |
3 |
3/4″ |
5-3/8″ |
15/16″ |
1/4″ |
5/16″-7/8″ |
3 |
3/4″ |
6-1/8″ |
1″ |
5/16″ |
3/8″-15/16″ |
3 |
3/4″ |
6-3/8″ |