Step drill bits can drill several hole sizes in a single operation. These single-flute bits are specially designed for thin materials, and feature steps of progressively larger diameters.
Step drill bits do not require any pilot holes to be drilled, and can create large burr-free holes in the blink of eye. They can be used to make even larger holes (typically 60mm wide or smaller) in sheet metal, but do require pilot holes. It is common practice to use a self-starting step bit to form the large pilot hole needed for a hole-enlarging step bit.
Item No. |
Size |
Increment |
Allover Length |
Step QTY. |
Metric (mm) |
Metric (mm) |
(mm) |
MTSPD412A |
4 -12mm |
2mm |
65 |
5 |
MTSPD412B |
4 -12mm |
1mm |
65 |
9 |
MTSPD420 |
4 -20mm |
2mm |
75 |
9 |
MTSPD422 |
4 -22mm |
2mm |
80 |
10 |
MTSPD430 |
4 -30mm |
2mm |
100 |
14 |
MTSPD432 |
4 -32mm |
2mm |
105 |
15 |
MTSPD439 |
4 -39mm |
2-3mm |
107 |
14 |
MTSPD535 |
5 -35mm |
2-3mm |
100 |
13 |
MTSPD538 |
5 -38mm |
2-3mm |
95 |
14 |
MTSPD618 |
6 -18mm |
2mm |
67 |
7 |
MTSPD620 |
6 -20mm |
2mm |
71 |
8 |
MTSPD624 |
6 -24mm |
2mm |
80 |
10 |
MTSPD625 |
6 -25mm |
2-3mm |
65 |
7 |
MTSPD630 |
6 -30mm |
2mm |
98 |
13 |
MTSPD638 |
6 -38mm |
2-3mm |
100 |
12 |
MTSPD936 |
9 -36mm |
3mm |
86 |
10 |
MTSPD1020 |
10 -20mm |
1mm |
88 |
11 |
MTSPD1220 |
12 -20mm |
1mm |
76 |
9 |
MTSPD1338 |
13 -38mm |
3mm |
112 |
10 |
MTSPD1424 |
14 -24mm |
2mm |
67 |
6 |
MTSPD2030 |
20 -30mm |
1mm |
88 |
11 |
MTSPD2034 |
20 -34mm |
2mm |
75 |
8 |
MTSPD3040 |
30-40mm |
1mm |
98 |
11 |
MTSPD4050 |
40-50mm |
1mm |
107 |
11 |
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Item No. |
Size |
Increment |
Allover Length |
Step QTY. |
Inch |
Inch |
Metric (mm) |
MT106025 |
1/8¡±-1/2¡± |
1/32" |
100 |
13 |
MT106026 |
1/2¡±-1¡± |
1/16" |
76 |
9 |
MT106027 |
1/4¡±-3/4¡± |
1/16" |
76 |
9 |
MT106028 |
3/16¡±-7/8¡± |
1/16" |
67 |
6 |
MT106029 |
3/16¡±-7/8¡± |
1/16" |
100 |
12 | |