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Drilling tools
Step drill

Step drill HSS
for the electrical industry
Metal cutting tools
Metal cutting tools
HSS TiN
Application: in terms of dimensional accuracy and process
No. 11408 020, 11409 020: For drilling through reliability
holes for reinforced pipe thread up to a material ƒ No. 11409: Step drill HSS TiN, profile-ground and
thickness of 4 mm in steel, stainless steel, non- twisted tip for highest requirements in terms of
ferrous metals and cast iron. dimensional accuracy and process reliability
No. 11408 030, 11409 025: For drilling core holes No. 11409 025
for reinforced pipe thread up to a material thickness Advantage:
of 4 mm in steel, stainless steel, non-ferrous metals ƒ High variability: Wide range of bores can be
and cast iron. covered with just one tool
ƒ 3-facet shank ensures good torque transfer in the
Execution: chuck
ƒ No. 11408: Step drill HSS, uncoated and profile- ƒ User-friendly tool change: Bit easily replaced in
ground with twisted tip for highest requirements case of wear

Application Steel (N/mm ) Stainless steel Alu Brass Bronze Plas- Graphite GG(G) Titan- Nickel- Super- Hard mat.
2
No. <700 <1000 <1300 marten. austen. short long short long short long tics G(C)FK GjMW alloy alloy alloy <55 HRC <65 HRC
11408020 ˜ ˜ š š ˜ ˜ ˜ ˜ ˜ ˜ ˜ ˜ ˜
11408030 ˜ ˜ š š ˜ ˜ ˜ ˜ ˜ ˜ ˜ ˜ ˜
11409020 ˜ ˜ ˜ ˜ š ˜ ˜ ˜ ˜ ˜ ˜ ˜ ˜ ˜ š
11409025 ˜ ˜ ˜ ˜ š ˜ ˜ ˜ ˜ ˜ ˜ ˜ ˜ ˜ š
Type E1 through hole E2 core hole
Step Ø 12.5 mm (PG7) | 15.2 mm (PG9) 11.4 mm (PG7) | 15 mm (PG9)
| 18.6 mm (PG11) | 20.4 mm | 17.25 mm (PG11) | 19 mm
(PG13.5) | 22.5 mm (PG16) | 28.3 (PG13.5) | 21.25 mm (PG16) |
mm (PG21) 26.75 mm (PG21)
Groove length (mm) 4 6
Length (mm) 85 92
Surface
Ident. No.
030
020
11408... Uncoated Unit price, € O. R. O. R.
Ident. No.
020
025
11409... TiN Unit price, € O. R. O. R.
Prod. group 114
Countersink step drill HSS uncoated, spiral groove with exchange bit
for universal use up to 1000 N/mm in electrical industry MF thread
2
HSS TiN
Application: ƒ No. 11409: Step drill HSS TiN, profile-ground and
For drilling through holes and core holes for metric twisted tip for highest requirements in terms of
fine thread up to a material thickness of 4 mm in dimensional accuracy and process reliability
steel, stainless steel, non-ferrous metals and cast
iron. Advantage:
ƒ High variability: Wide range of bores can be
Execution: covered with just one tool No. 11408
ƒ No. 11408: Step drill HSS, uncoated and profile- ƒ 3-facet shank ensures good torque transfer in the
ground with twisted tip for highest requirements chuck
in terms of dimensional accuracy and process ƒ User-friendly tool change: Bit easily replaced in
reliability case of wear

No. 11409
2
Application Steel (N/mm ) Stainless steel Alu Brass Bronze Plas- Graphite GG(G) Titan- Nickel- Super- Hard mat.
No. <700 <1000 <1300 marten. austen. short long short long short long tics G(C)FK GjMW alloy alloy alloy <55 HRC <65 HRC
11408040 ˜ ˜ š š ˜ ˜ ˜ ˜ ˜ ˜ ˜ ˜ ˜
11409040 ˜ ˜ ˜ ˜ š ˜ ˜ ˜ ˜ ˜ ˜ ˜ ˜ ˜ š
Type E 3 S
Step Ø 10.5/12.5 mm (M12 x 1.5) | 14.5/16.5 mm
(M16 x 1.5) | 18.5/20.5 mm (M20 x 1.5) |
23.5/25.5 mm (M25 x 1.5) | 30.5/32.5 mm
(M32 x 1.5) | 38.5/40.5 mm (M40 x 1.5)
Groove length (mm) 4
Length (mm) 110
Surface
040
Ident. No.
11408... Plasma-nitrated Unit price, € O. R.
040
Ident. No.
11409... TiN Unit price, € O. R.
Prod. group 114
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