WIDIA - Полный каталог инструмента - 2017
TopThread™
Catalogue Numbering System
для размещения заказа - zakaz@widiahanita.ru
TopThread
Insert Identication System
N
Type
of Insert
D
Insert
C
Additional
Information
N — TopThread™
B — Buttress
F — Fine pitch
S — Stub Acme
C — Cresting
P — Positive rake
K — Fine pitch, positive
NDC38RDR75
3 8RD
Insert Industry Thread
Size Identication
R
Hand
of Insert
75
Denition
of Insert
Additional
Information
Indicates API or
drilling industry
form designation
(e.g., 10RD,
8RD, .038)
controlled root
radius threading
inserts indicate the
root radius in 0,025
increments (NJ,
NJF, NJP, NJK)
or
M indicates metric
ISO thread
R — Right Hand
L — Left Hand
A — Acme
D — API or NPT
J — UNJ thread
T — 60° V thread
W — 55° V Whitworth
T
TopThread insert dimensions
insert size
1
2
3
4
5
6
8
A
mm
2,54
5,56
8,74
11,51
17,48
11,51
7,93
NJF NDC-V-M
T
mm
2,54
3,81
4,95
6,48
9,65
9,73
11,13
NTC
NA NT NT-K
• Threads per inch
or pitch (for metric)
• “A” or “B” type
Buttress insert
• Taper per foot —
API threads
I — Internal thread
E — External thread (used only if
internal and external thread
forms are different)
M — Multiple tooth
K — Standard chip control
C — Coarse pitch
D — Dryseal
F10
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