Sumitomo General Catalog 2025-2026

External Holders STAC / STDC / STFC

S Style Mini Holder - General Turning Screw-on

Fig 1

91˚

STAC External Turning

LF

91˚

Figure shows right-hand (R) tool.

Holder

Parts

Dimensions (inch / mm )

Applicable Inserts

Stock

Flat Screw Wrench

Overall Length LF

Cutting Edge Distance WF

Cutting Edge Height HF

Height H

Width B

Cat. No.

Fig

Ref. Page

R L

Cat. No.

N m

C

(For Torx Holes)

● ● 0.375 0.375 4.50 0.375 ● ● 0.375 0.375 6.00 0.375 ● ● 0.500 0.500 4.50 0.500 ● ● 0.500 0.500 6.00 0.500 ● ● 0.625 0.625 6.00 0.625 ● ● 0.625 0.625 4.50 0.625 ● ● 0.625 0.625 6.00 0.625

STAC R/L 062B STAC R/L 062D STAC R/L 082B STAC R/L 082D STAC R/L 102D STAC R/L 103B STAC R/L 103D STAC R/L 0808-09 STAC R/L 1010-09 STAC R/L 1010-11* STAC R/L 1212-11 STAC R/L 1616-11 STAC R/L 1616-16* STAC R/L 2020-11

1 1 1 1 1 1 1

0.375 0.375 0.500 0.500 0.625 0.625 0.625

TC □□ 21.5

B104

ST-21.5

TRX08

TC □□ 32.5

B106

ST-32.5

TRX15

8 8 100

8.5

8

1 BFTX02205N 0.5 TRX06 1 1 BFTX02506N 1.5 TRX08 1 1

«

TC □□ 1.81.5

B103

10 10 100 10.5 10 10 100 12 12 12 100 12.5 16 16 100 16.5 16 16 100 20 20 20 125 20.5

10 10 12 16 16 20

«

TC □□ 21.5

B104

« « « «

TC □□ 32.5 TC □□ 21.5

B106 B104

1 1

External / Chamfering STDC External / Chamfering STDC

« «

Fig 1

Fig 1

C

LH

Figure shows right-hand (R) tool.

LH

Figure shows right-hand (R) tool.

LF

LF

Holder

Parts 

Dimensions (inch)

Insert Screw

Shim Wrench

Shim Screw

Cutting Edge Height

Overall Length

Cutting Edge

Stock

Shim

Applicable Insert

D

Height Width

Head

Cat. No.

Fig

Ref. Page

R L

Cat. No.

N m

H B LFWFHFLH

(For Hex Socket)

STDC R/L 062 STDC R/L 082 STDC R/L 103 STDC R/L 123B STDC R/L 163D STFC Fig 1 External Turning and Facing

« « 0.375 0.375 2.50 0.433 0.375 0.410 TC □□ 21.5 □ « « 0.500 0.500 3.50 0.512 0.500 0.570

1 1

B104

0.9

ST-1225 TRD07

R

« « 0.625 0.625 4.00 0.669 0.625 1.000 « « 0.750 0.750 4.50 0.866 0.750 1.000 « « 1.000 1.000 6.00 1.063 1.000 1.000

1 3.0 SH-3414 ST1335 TRD15 1

TC □□ 32.5 □ B106

ST-1750

1

Fig 1

External Turning and Facing STFC

S

LH

Figure shows right-hand (R) tool.

LF

LH

Figure shows right-hand (R) tool.

LF

T

Holder

Parts 

Dimensions (inch)

Insert Screw

Shim Wrench

Shim Screw

Cutting Edge Height

Stock Height Width Overall Length

Cutting Edge

Shim

Head Applicable Insert

Cat. No.

Fig

Ref. Page

R L

Cat. No.

N m

H B LFWFHFLH

(For Hex Socket)

V

STFC R/L 062 STFC R/L 082 STFC R/L 103 STFC R/L 123B STFC R/L 163D

« « 0.375 0.375 2.50 0.500 0.375 0.400 « « 0.500 0.500 3.50 0.625 0.500 0.689 « « 0.625 0.625 4.00 0.750 0.625 1.000 « « 0.750 0.750 4.50 1.000 0.750 1.000 « « 1.000 1.000 6.00 1.250 1.000 1.000

1 1

TC □□ 21.5 □ B104

0.9

— ST-1225 TRD07

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

TC □□ 32.5 □ B106

1

W

Applicable Inserts STAC / STDC / STFC

Name of Chipbreaker/ CBN/PCD

EGU

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

Photo Grade

AC8025P

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

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

C39

N m Recommended Tightening Torque (N·m)

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