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
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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 |