Description
The HSS Step drill bit consists of 12 sizes in a single bit and is made of High Speed Steel. It is suitable for drilling the following materials up to maximum thickness 3.2mm: stainless steel, plain carbon steel, bronze, brass, copper, aluminium and plastics.
Metal drill bit selection chart
Matching the correct drill bit to the intended application will maximise the life of the bit.
Slide to view full table.
| Plastics | Aluminium | Copper | Brass | Bronze | Plain Carbon Steel | Cast Iron | Stainless Steel | |
|---|---|---|---|---|---|---|---|---|
| Multi-purpose | ✔ | ✔ | ✔ | ✔ | ✔ | |||
| Standard metal | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ||
| Industrial Metal | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ||
| Titanium | ✔ | ✔ | ✔ | ✔ | ✔ | |||
| Turbo Metal | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | |
| Cobalt | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
Recommended drilling speeds in Metal
Use the correct drill speed to ensure the ideal drill bit performance in the material being drilled.
Slide to view full table.
| Drill Size | |||||||||||||
| 1mm | 2mm | 3mm | 4mm | 5mm | 6mm | 7mm | 8mm | 9mm | 10mm | 11mm | 12mm | 13mm | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Stainless Steel | 3182 | 1591 | 1061 | 795 | 636 | 530 | 455 | 398 | 354 | 318 | 289 | 265 | 245 |
| Cast Iron | 4773 | 2386 | 1591 | 1193 | 955 | 795 | 682 | 597 | 530 | 477 | 434 | 398 | 367 |
| Plain Carbon Steel | 6364 | 3182 | 2121 | 1591 | 1273 | 1061 | 909 | 795 | 707 | 636 | 579 | 530 | 490 |
| Bronze | 7955 | 3977 | 2652 | 1989 | 1591 | 1326 | 1136 | 994 | 884 | 795 | 723 | 663 | 612 |
| Brass | 9545 | 4773 | 3182 | 2386 | 1909 | 1591 | 1364 | 1193 | 1061 | 955 | 868 | 795 | 734 |
| Copper | 11136 | 5568 | 3712 | 2784 | 2227 | 1856 | 1591 | 1392 | 1237 | 1114 | 1012 | 928 | 857 |
| Aluminium | 12727 | 6364 | 4242 | 3182 | 2545 | 2121 | 1818 | 1591 | 1414 | 1273 | 1157 | 1061 | 979 |
Metal Drill Bit Speed vs. Size of Drill Chart
QUESTIONS & ANSWERS
Ask a Question-
What is the diameter of the shaft of the step drill - will it fit into a 13mm chuck ?
The shaft diameter for the step drill is 12.8mm at its widest (slightly narrower on the flat sections where the jaws grip) and will fit in a 13mm capacity chuck.
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What is the price of the HSS 6/38mm step drill
Good day, They retail from R680 at you closest hardware store.
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do you have a step drill or similar to cut 2,5mm mild steel plates to 80mm diameter mounted in a pedestal drill chuck .
Your best option will be a hole saw
https://ruwag.co.za/products/industrial-bimetal-holesaw?variant=12690984075358