HSS Step Drill Bit (851 series)
- Industrial grade step drill bit for professionals
- Perfect for drilling or enlarging multiple holes with one single drill bit to save time and money
- Double flute ensures efficient chip removal, “cool” running, and extended bit life
- 135° split point prevents walking/wobbling, provides self centering, and eliminates the need for a pilot hole
- Step Drill cuts through sheet metal, plastic, copper, wood, aluminum, and carbon fiber
Please indicate the desired quantities.
Drill and enlarge multiple, different sized holes in sheet metal, PVC, plastic, wood and etc. with one single drill bit. Heat-treated high speed steel material makes the bit cut faster and last longer. Chamfered steps allows the user to drill holes step by step to eliminate debris burr. 135° split point for instant starts
| NO. OF STEPS | SMALLEST DIA. | LARGEST DIA. | SHANK | PART NUMBER | UPC NUMBER 722170- |
| 13 | 1/8″ | 1/2″ | 1/4″ Quick Change | 851.0500A | 85131 |
| 6 | 3/16″ | 1/2″ | 1/4″ Quick Change | 851.0500B | 85132 |
| 9 | 1/4″ | 3/4″ | 1/4″ Quick Change | 851.0750QC | 85143 |
| 3 | 3/8″ | 3/4″ | 1/4″ Quick Change | 851.0750B | 85137 |
| 12 | 3/16″ | 7/8″ | 1/4″ Quick Change | 851.0875QC | 85134 |
| 8 | 5/16″ | 1″ | 3/8″ HEX | 851.1000 | 85141 |
| 12 | 7/16″ | 1-1/8″ | 3/8″ HEX | 851.1125 | 85135 |
| 2 | 7/8″ | 1-1/8″ | 3/8″ HEX | 851.1125B | 85138 |
| 11 | 3/4″ | 1-3/8″ | 3/8″ HEX | 851.1375 | 85136 |
| 5 | 7/8″ | 1-3/8″ | 3/8″ HEX | 851.1375B | 85139 |
| 11 | 1/4″ | 1-1/2″ | 3/8″ HEX | 851.1500 | 85140 |