ZEC INDUSTRY CO.,LTD
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Item No.:14HSO001
* HSS Step Drills for drilling cylindrical holes in solid material up to a thickness of 4 ~ 5mm.
* Burr-free and vibration-free drilling.
* The tapered cutting edges of the next drill step can be used for simultaneous deburring or chamfering of the finished bore at the same time.
* Drilling perfectly round holes in steel, brass, copper, aluminum, wood and plastic.
* Drills up to 13 holes sizes with one bit.
* Ideal tool for sheet metal workers, electrical contractor, auto mechanics, and general contractors.
* Surface treatment available: White Finish, Black Oxide, Titanium Coated, Cobalt Coated, TiALN Coated
| Item No. | Size Range | Step No. | Shank Size |
| SDA001 | 4 – 12mm x 2mm | 5 | 6mm |
| SDA002 | 4 – 12 mm x 1mm | 9 | 6mm |
| SDA003 | 4 – 20mm x 2mm | 9 | 8mm |
| SDA004 | 4 – 22mm x 2mm | 10 | 8/10mm |
| SDA005 | 4 – 30mm x 2mm | 14 | 10mm |
| SDA006 | 4 – 32mm x 2mm | 15 | 10mm |
| SDA007 | 4 – 39mm x 2-3mm | 14 | 10mm |
| SDA008 | 5 – 28mm | 7 | 10mm |
| SDA009 | 5 – 28.3mm | 10 | 10mm |
| SDA010 | 5 – 35mm x 2-3mm | 13 | 13mm |
| SDA011 | 6 – 18mm x 2mm | 7 | 10mm |
| SDA012 | 6 – 20mm x 2mm | 8 | 10mm |
| SDA013 | 6 – 24mm x 2mm | 10 | 10mm |
| SDA014 | 6 – 25mm | 7 | 10mm |
| SDA015 | 6 – 26.75mm | 8 | 10mm |
| SDA016 | 6 – 30mm x 2mm | 13 | 10mm |
| SDA017 | 6 – 30.5mm | 10 | 10mm |
| SDA018 | 6 – 32mm | 8 | 10mm |
| SDA019 | 6 – 32mm | 9 | 10mm |
| SDA020 | 6 – 37mm | 12 | 10mm |
| SDA021 | 6 – 38mm | 12 | 10mm |
| SDA022 | 6 – 40mm | 16 | 13mm |
| SDA023 | 9 – 36mm x 3mm | 10 | 12mm |
| SDA024 | 10 – 20mm x 1mm | 11 | 10mm |
| SDA025 | 12 – 20mm x 1mm | 9 | 10mm |
| SDA026 | 12.5 – 30.5mm | 7 | 12mm |
| SDA027 | 13 – 38mm | 10 | 12mm |
| SDA028 | 14 – 24mm x 2mm | 6 | 13mm |
| SDA029 | 14 – 25mm | 7 | 13mm |
| SDA030 | 20 – 30mm x 1mm | 11 | 13mm |
| SDA031 | 20 – 34mm x 2mm | 8 | 13mm |
| SDA032 | 30 – 40mm x 1mm | 11 | 13mm |
| SDA033 | 40 – 50mm x 1mm | 11 | 13mm |
| SDA034 | 50 – 60mm x 1mm | 11 | 13mm |
| SDA035 | 5 – 30.5mm | 13 | 12mm |
| SDA036 | 5 – 38mm | 14 | 12mm |