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All Products ➞ Bordo ➞ Drills ➞ Specialist ➞ Centre Drills HSS ➞ Bulk
No. 7 HSS Centre Drill
| Part Number: | 2560-7 |
| Brand: | Bordo |
| Barcode: | 9326518018308 |
| Pack Qty: | 1 |
| Body Diameter (inch): | 5/8 |
| Overall Length (inch): | 3-1/4 |
| Pilot Diameter (inch): | 1/4 |
| Pilot Length (inch): | 1/4 |
| Equivalent No.: | 7 |
About this item:
- No. 7 HSS Centre Drill
- Bright Finish HSS No.7 Centre Drill 118° / 60°
- Centre Drills are used with a lathe to centre drill stock for mounting in the lathe.
- They are designed to drill a small diameter pilot hole followed by a 60° countersink which provides a bearing surface for the 60° point of the lathe centre.
- Centre drills are also used extensively with milling machines to accurately start holes.
- The hole locations can be dialled in using the milling machine's calibrated hand wheels.
- The hole is then started using the centre drill.
- The large diameter shank on the centre drill holds the drill point right on centre.
- Once the hole is started, the centre drill is replaced with a drill of the desired diameter and the finished hole is then drilled.