WIDIA - Полный каталог инструмента - 2017
TopThread™
Insert Overview
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chip
control — K
style
neutral
NT-K NT
NT-CK
NTF
positive
thread
prole
NTP Partial Profile 60°
standard
tolerance
class cresting
application
General use for 60° thread forms,
–
–
N
such as ISO and UN, where
non-cresting inserts are desired to
cut a variety of pitches.
page(s)
F13–F15
Partial Profile 60°
— coarse pitch
–
Coarse pitch 60° thread forms, such
–
N
as ISO and UN, where non-cresting
inserts are desired to cut a variety
F15
of pitches.
NTK
Partial Profile 60°
— fine pitch
–
Fine pitch 60° thread forms, suc
as ISO and UN, where non-cresting
– N inserts are desired to cut a variety F16
of pitches — able to thread close
to shoulders.
NTC
American UN
ANSI
B1.1:74
2A/2B
Y
Widely used inch-based 60° V-form
for all industries.
F17
NDC-V
NJP UNJ
SAEA588791 3A/3B
Controlled root radius on external
N threads for military and aerospace
industries.
F18
Controlled root radius on external
NJK
UNJ —
fine pitch
SAEA588790 3A/3B
N
threads for military and aerospace
industries — able to thread close
F18
to shoulders.
NPT
ANSI/ACME
B1.201:
1983
Standard
NPT
Y
National Pipe Thread standard forms
for pipe fittings.
F18
NDC-V-M
NWC-E
NDC-RD
NA
NAS
NTB-B
NPT —
multi-tooth
Whitworth,
BSW, BSP
API Round
Acme
ANSI/ACME
B1.201:
1983
Standard
NPT
Y
High-productivity multi-tooth threading
inserts for NPT threads.
F19
BS 84:1956,
ISO 228/1:
1982,
DIN 259
Medium
Class A
Y
Widely used 55° form for gas and
water connections.
F19
API STD. Standard
5B:1979 API RD
60° V-form with large radius for casing,
Y
tubing, and line pipe in the oil and
gas industry, including 8 and
F20
10 round forms.
ANSI
B1.5:1988
3G
29° truncated thread form for motion
N applications in a wide variety
of industries.
F21
Stub Acme
ANSI
B1.8:1988
2G
Shallow depth 29° truncated thread
N form for motion applications in a wide
variety of industries.
F22
American Buttress
— 45° clearance
ANSI
B1.9:1973
flank leading (Pull)
Class 2
Sawtooth form for axial load bearing
N
applications in a variety of industries —
use the “B” style when the 45°
F22
clearance flank is the leading flank.
F8
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