Общий каталог Widia 2017 - страница 606

Insert Overview

style

chip thread tolerance

control K neutral positive profi le standard class cresting application page(s)

General use for 60° thread forms, such as ISO and UN, where

NT-K NT NTP Partial Profi le 60° – – N F13–F15

non-cresting inserts are desired to cut a variety of pitches.

Coarse pitch 60° thread forms, such Partial Profi le 60° as ISO and UN, where non-cresting

NT-CK – – N F15

• coarse pitch inserts are desired to cut a variety

of pitches.

Fine pitch 60° thread forms, such as ISO and UN, where non-cresting Partial Profi le 60°

NTF NTK – – N inserts are desired to cut a variety F16

• fi ne pitch

of pitches able to thread close to shoulders.

ANSI Widely used inch-based 60° V-form

NTC American UN 2A/2B Y F17

B1.1:74 for all industries.

Controlled root radius on external

NJP UNJ SAEA588791 3A/3B N threads for military and aerospace F18

industries.

Controlled root radius on external UNJ threads for military and aerospace

NJK SAEA588790 3A/3B N F18

fi ne pitch industries able to thread close to shoulders.

ANSI/ACME Standard National Pipe Thread standard forms

NDC-V NPT B1.201: Y F18

NPT for pipe fi ttings. 1983

NPT ANSI/ACME High-productivity multi-tooth threading

Standard

NDC-V-M B1.201: Y F19

multi-tooth NPT inserts for NPT threads.

1983

BS 84:1956,

Whitworth, ISO 228/1: Medium Widely used 55° form for gas and

NWC-E Y F19

BSW, BSP 1982, Class A water connections.

DIN 259

60° V-form with large radius for casing,

API STD. Standard tubing, and line pipe in the oil and

NDC-RD API Round Y F20

5B:1979 API RD gas industry, including 8 and

10 round forms.

ANSI NA Acme B1.5:1988

3G

N

29° truncated thread form for motion applications in a wide variety F21 of industries.

ANSI NAS Stub Acme B1.8:1988

2G

N

Shallow depth 29° truncated thread form for motion applications in a wide F22 variety of industries.

American Buttress NTB-B 45° clearance fl ank leading (Pull)

Sawtooth form for axial load bearing ANSI applications in a variety of industries

Class 2 N F22

B1.9:1973 use the “B” style when the 45° clearance fl ank is the leading fl ank.

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