SCI 21-22 General Catalog

Threading Tools Product Range ■ External Threading Tools →

Structure

Applicable Thread Symbol

Series

Appearance

Features

SSTE

M

W

· Adopts a flat 3-corner insert. Ground cutting edge flank produces superior machined surface with sharp cutting edge · Stable chip control through use of a 3D moulded breaker · Large lineup of inserts with a wiper edge · Range of lever lock holders with strong clamping force (shank size □ 25 to 32mm) □ □ □ □

UNC/UNF

G/Rp/W

NPT

R/Rc

→ F63

NPTF

UNJ

LTE/ STE

M

W

F

and screw-on type holders (shank size □ 12 to 16mm) · M-Class flat-mounted 3-corner insert is economical · Range of cermet grades · Stable chip control with incorporated chipbreaker

UNC/UNF

G/Rp/W

NPT

R/Rc

→ F64, F65 →

NPTF

UNJ

□ □ · For a small lathe with a shank size of □ 20mm or less · 2-corner vertically-mounted insert enables space-saving threading · Can also be used for back-turning threading with bar feeder · Can also be used for small-pitch (min. 0.2mm) threading □ □

STH

M

W

UNC/UNF

G/Rp/W

NPT

R/Rc

NPTF

UNJ

F76

■ Internal Threading Tools

Min. bore diameter (mm)

Structure

Applicable Thread Symbol

Series

Appearance

Features

SSTI

M

W

· Adopts a flat 3-corner insert. Ground cutting edge flank produces superior machined surface with sharp cutting edge · Stable chip control through use of a 3D molded breaker · Large lineup of inserts with a wiper edge

UNC/UNF

G/Rp/W

ø18

NPT

R/Rc

→ F66

NPTF

UNJ

STI

M

W

· M-Class flat-mounted 3-corner insert is economical · Stable chip control with incorporated chipbreaker · Range of cermet grades

UNC/UNF

G/Rp/W

ø20

NPT

R/Rc

→ F66

NPTF

UNJ

Note: The minimum machining diameter is the diameter of the screw prepared hole.

: 60° ISO General-purpose Metric Thread

: 55° General-purpose Thread (Whitworth)

: 60° Unified Thread

: 55° Parallel Thread for Pipe

: 60° American NPT

: 55° Taper Thread for Pipe BSPT

: 60° American NPTF

: 60° UNJ

F61

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