HSS Step Drill Bit spiral flute
spiral flute 3 flat shank
30601011S 4-12mm 5steps
Port: shanghai
Minimum Order Quantity: 500 Piece/Pieces each size
Supply Ability: 50000 Piece/Pieces per Month each size
Payment Terms: L/C,T/T,Western Union
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Packaging Detail: wood case, aluminium box, metal case, dubble blister with color card
Delivery Detail: 40days
HSS Step Drill Bit spiral flute
Step Drill Bits are perfect for drilling multiple-size holes in thin sections of metal, plastic and wood using a single bit. Each step drills does the work of many drill-bit sizes. Drills round holes in most metals (steel, brass, aluminum, copper) up to 1/8" (3.2mm) thick as well as in plastic and wood. No center punching or pilot hole drilling is required on most sizes. The bits are easy to keep sharp, and the hole size is easily determined by the diameter markings that are permanently laser-etched in the flute areas.
| Art No. | Size Range | steps | Shank Size |
| 30601001S | 3/16"-1/2" | 6step | 1/4" |
| 30601002S | 1/8"-1/2" | 13step | 1/4" |
| 30601003S | 1/4"-3/4" | 9step | 3/8" |
| 30601004S | 3/16"-7/8" | 12step | 3/8" |
| 30601005S | 7/16"-11/8" | 12step | 3/8" |
| 30601006S | 1/4"-11/2" | 11step | 1/2" |
| 30601007S | 1/2"-1" | 9step | 3/8" |
| 30601008S | 9/16"-1" | 8step | 3/8" |
| 30601009S | 3/4"-13/8" | 11step | 1/2" |
| - | 3/8"-1/2" | 2step | 1/4" with 3 flats |
| - | 7/8" | 1step | 3/8" with 3 flats |
| - | 7/8"-11/8" | 2step | 3/8" with 3 flats |
| Art No.(spiral) | Size Range | Steps | Shank Size |
| 30601011S | 4-12mm | 5 | 6mm/6.5mm |
| 30601012S | 4-12mm | 9 | 6mm/6.5mm |
| 30601013S | 4-20mm | 9 | 8mm |
| 30601014S | 4-22mm | 10 | 8mm |
| 30601015S | 4-30mm | 14 | 10mm |
| 30601016S | 4-39mm | 14 | 10mm |
| 30601017S | 5-35mm | 13 | 13mm |
| 30601018S | 6-18mm | 7 | 10mm |
| 30601019S | 6-20mm | 8 | 10mm |
| 30601020S | 6-24mm | 10 | 10mm |
| 30601021S | 6-32mm | 8 | 10mm |
| 30601022S | 14-24mm | 6 | 13mm |
| 30601023S | 14-25mm | 7 | 13mm |
| 30601024S | 20-34mm | 8 | 13mm |
| 30601025S | 10-20mm | 11 | 10mm |
| 30601026S | 20-30mm | 11 | 13mm |
| 30601027S | 5-28.3mm | 10 | 10mm |
| 30601028S | 6-30mm | 13 | 10mm |
| 30601029S | 6-38mm | 12 | 10mm |
| 30601030S | 6-26.75mm | 7 | 10mm |
| 30601031S | 6-39mm | 12 | 10mm |
| 30601032S | 6-37mm | 12 | 10mm |
| 30601033S | 6-32mm | 9 | 10mm |
| 30601034S | 6-40mm | 16 | 13mm |
| 30601035S | 4-32mm | 15 | 10mm |
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