171 / 1618
1/153
Cutting Tools
1
C
recommended
U
suitable
V
limited suitability
Thread type
M
M
M
G
G
M
M
NPT
Colour ring
Order No.
1649
1651
1649
1649
1649
1673
1738
1670
Threaded section
M3–M10
M3–M10
M12–M20
G 1/8"
G 1/4"–G 1"
M2–M20
M3–M20
1/16"–1"
For through threads
≤ 1 x D
≤ 3 x D
≤ 1,5 x D
For blind holes
≤ 1,5 x D
≤ 1,5 x D
Type/form
N/B
NR 15/C
N/C
Material
HSS
HSS
HSS
HSS
HSS
HSS-E
HSS-E
HSS-E
Tolerance zone
ISO 2 6H
ISO 2 6H
Surface
Bright
Bright
Bright
Bright
Bright
Bright
Bright
Bright
Page
1/175
1/176
1/179
1/179
1/180
1/184
1/185
1/185
Steels
up to
850
N/mm
2
C
C
C
C
C
U
U
C
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
processing
over
60 HRC
Stainless
and acid-
resistant
steels (INOX)
Ti steels,
Ti alloys,
special
steels
Cast-iron
materials
U
Al, Al- and
Mg alloy
V
C
V
V
V
U
U
C
Copper,
brass,
bronze
C
Material group
Overview – Hand and machine thread taps
Thread cutting tools
171