Sumitomo General Catalog 2025-2026

External Holders STGC / STJC / STTC

S Style Mini Holder - General Turning and Profiling Screw-on

91˚

External Turning STGC External Turning STGC

Fig 1

Fig 1

Figure shows right-hand (R) tool.

Figure shows right-hand (R) tool.

LH

0º

LH

0º

LF

LF

0º

0º

Holder

Parts 

Dimensions (inch)

C

Insert Screw

Shim Wrench

Shim Screw

Cutting Edge Height

Applicable Insert

Stock

Shim

Overall Length

Cutting Edge

Height Width

Head

Cat. No.

Fig

Ref. Page

R L

Cat. No.

N m

H B LFWFHFLH

(For Hex Socket)

STGC R/L 062 STGC R/L 082 STGC R/L 103

« « 0.375 0.375 2.500 0.500 0.375 0.500 « « 0.500 0.500 3.500 0.625 0.500 0.560 « « 0.625 0.625 4.000 0.750 0.625 1.000

1 1 1 1 1

TC □□ 21.5 □ B104

ST-1225

0.9

TRD07

—

—

TC □□ 32.5 □ B106

STGC R/L 123B « « 0.750 0.750 4.500 1.000 0.750 1.000 STGC R/L 163D « « 1.000 1.000 6.000 1.250 1.000 1.250

3.0 SH-3414 ST1335

TRD15 ST-1750

External Turning and Facing STJC External Turning and Facing

Fig 1

Fig 1

LH

Figure shows right-hand (R) tool.

0º

LH

C

Figure shows right-hand (R) tool.

LF

0º

0º

LF

0º

Holder

Parts

Dimensions (inch)

Stock

Flat Screw Wrench

Applicable Inserts

Cutting Edge Distance WF

Cutting Edge Height HF

Overall Length LF

Height H

Width B

Head LH

D

Ref. Page

Cat. No.

Fig

R L

Cat. No.

(For Torx Holes)

External / Chamfering STTC STJC R/L 102D External / Chamfering STJC R/L 062D STJC R/L 082D

l l 0.375 0.375 6.000 0.375 0.375 0.625 l l 0.500 0.500 6.000 0.500 0.500 0.625 l l 0.625 0.625 6.000 0.625 0.625 0.625

1 1

TC □□ 21.5

B104

ST-1225

TRD07

R

Fig 1

Fig 1

S

Figure shows right-hand (R) tool.

LH

0º

Figure shows right-hand (R) tool.

LF LH

0º

0º

LF

0º

Holder

Parts 

Dimensions (inch)

T

Insert Screw

Shim Wrench

Shim Screw

Cutting Edge Height

Applicable Insert

Stock

Shim

Overall Length

Cutting Edge

Height Width

Head

Cat. No.

Fig

Ref. Page

R L

Cat. No.

N m

H B LFWFHFLH

V

(For Hex Socket)

STTC R/L 123D l « 0.750 0.750 4.500 0.718 0.750 1.000 STTC R/L 163D « « 1.000 1.000 6.000 0.860 1.000 1.000

1 3.0 SH-3414 ST-1335 TRD15 ST-1750

TC □□ 32.5 □ B106

1

Applicable Inserts STGC / STJC / STTC

W

Name of Chipbreaker/ CBN/PCD

EGU

1st Recommended Insert ● Refer as well to the Insert Selection Guide (page A10).

Photo Grade

● Depending on the insert size, some combinations cannot be made-to-order or manufactured.

AC8025P

Application Range

P (Steel)

M (Stainless Steel)

K (Cast Iron)

N (Non-Ferrous)

Finishing to Medium Cutting

Medium Cutting

Medium Cutting

Medium to Roughing

Finishing

Roughing Finishing

Roughing

—

Process

ESU

ESU

ESU

EMU

ELU

ELB

No Chipbreaker

PCD

ESU AC8025P

General Machining

T1500Z

AC8025P

AC6030M

AC6030M

AC6040M

AC4015K

AC4015K

DA1000

MESI

MEFF

MESI

EFM

MEFF

EFM

PCD

High- precision Recommended Cutting Conditions

Q Q

AC1030U

AC1030U

AC1030U

AC1030U

AC1030U

AC1030U

DA1000

A10~

A14~

A16~

A22~

l = USA Stocked Item

 = World Wide Warehouse Item

N m Recommended Tightening Torque (N·m)

C40

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