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1
Cutting Tools
Design:
HSS, bright surface. With 1/4" hexagon shank.
Application:
For drilling core holes, thread drilling and deburring in one step, for regular
metric threads according to ISO DIN 13.
Combi-bits are designed for thread drilling with cordless drills and handheld drills with left
and right motion. However, they are also suitable for drilling by hand and on stationary drilling
machines. Only through-holes with up to a maximum thread depth of 1 x D can be produced.
Particularly suitable for assembly work and small batches. Make sure that the tool axis and
hole axis are precisely aligned and use appropriate cutting oil (order no. 9829).
Order No.
Steels
up to
850
N/mm
2
Steels
up to
1000
N/mm
2
Steels
up to
1400
N/mm
2
Steels
up to
42 HRC
Steels
up to
52 HRC
Steels
up to
56 HRC
Steels
up to
60 HRC
Hard
machining
over
60 HRC
Stainless
and acid-
resistant
steels (INOX)
Ti steels,
Ti alloys,
special
steels
Cast iron
materials
Al,
AI and
Mg alloys
Copper,
brass,
bronze
1651
C
C
C
Order
No.
Thread
1651
Gradient
mm
Drill ∅
mm
Total length
mm
0001
M3
6.60
0.50
2.5
36
0003
M4
6.60
0.70
3.3
39
0005
M5
6.60
0.80
4.2
41
0007
M6
6.60
1.00
5.0
44
0009
M8
9.10
1.25
6.8
50
0011
M10
10.90
1.50
8.5
59
(161)
Combi-bit 1/4"
Design:
Supplied in a plastic box.
Order
No.
Size
1651
Set contents
0020
M3–M10
47.30
1 bit holder
6 combi-bits
M3; 4; 5; 6; 8; 10
(161)
Combi-bit set 1/4"
Order No.
Steels
up to
850
N/mm
2
Steels
up to
1000
N/mm
2
Steels
up to
1400
N/mm
2
Steels
up to
42 HRC
Steels
up to
52 HRC
Steels
up to
56 HRC
Steels
up to
60 HRC
Hard
machining
over
60 HRC
Stainless
and acid-
resistant
steels (INOX)
Ti steels,
Ti alloys,
special
steels
Cast iron
materials
Al,
AI and
Mg alloys
Copper,
brass,
bronze
1656
C
V
C
C
1657
C
V
C
C
C
Order
No.
Thread
1656
bright
1657
bright
Gradient
mm
Drill ∅
mm
Total length
mm
0001
M3
5.55
8.75
0.50
2.5
36
0003
M4
5.55
8.75
0.70
3.3
39
0005
M5
5.55
8.75
0.80
4.2
41
0007
M6
5.55
8.75
1.00
5.0
44
0009
M8
7.55
10.05
1.25
6.8
50
0011
M10
9.25
12.00
1.50
8.5
59
0013
M12
14.20
22.80
1.75
10.2
66
(161)
(161)
Combi-bit 1/4"
bright
Design:
With cross-grinding and 1/4" hexagon shank.
Application:
For drilling core holes, thread drilling and deburring in 1 step.
The heat-treated induction zone allows for increased bending elasticity, thus significantly
reducing the risk of fracture, thereby up to
50 % higher
life.
Combi-bits are designed for thread drilling with cordless drills and handheld drills with left
and right motion. However, they are also suitable for drilling by hand and on stationary drilling
machines. Material thickness not more than nominal thread ∅ (M6 = 6 mm material thickness).
Particularly suitable for assembly work and small batches. Make sure that the tool axis and hole
axis are precisely aligned and use appropriate cutting oil (Order No. 9829).
1656
HSS
bright
1657
HSS-E
bright
1/4"
M
HSS
HSS-E
60°
≤ 1xd
1/4"
M
HSS
DIN
13
60°
≤ 1xd
m
Thread cutting tools
186