Mongtec PSC — Polygon Shank Coupling Tool Holders (ISO 26623)
Mongtec Precision, a Taiwanese tooling brand headquartered in Taichung, Taiwan, publishes 385 PSC article numbers
across polygon sizes 32, 40, 50, 63, 80 and 100 — the coupling sizes defined in ISO 26623
(polygon taper interface with flange contact surface). Because the polygon coupling is an open ISO standard rather than a
proprietary interface, PSC sizes correspond directly to the Coromant Capto® size designations
(C3–C10) and to the German PSK designations used across European catalogues.
The PSC range
Each group below has its own page with the ISO 26623 coupling sizes and article numbers.
Size equivalence per ISO 26623-1 (polygon taper interface with flange contact surface). Size 100 (C10) was added to the standard following the 2013 ISO committee decision. Mongtec article counts from Mongtec PSC Product Catalog Ver 2026.07.
Trademark notice. Coromant Capto® is a registered trademark of Sandvik Coromant / Sandvik AB. Mongtec Precision Inc. is an independent tooling brand and is not affiliated with, endorsed by, or a licensee of Sandvik Coromant. Trademarks are used only to identify the polygon shank coupling sizes defined in ISO 26623 and to describe interface compatibility. Mongtec PSC products are Mongtec products; unit-for-unit interchange with any specific third-party cutting unit is confirmed by Mongtec engineering at RFQ.
Mongtec PSC clamping units
PSC polygon shank coupling units per ISO 26623 from the Mongtec range — the coupling sizes designated Capto® C3–C10. Photographs of actual production units.
Mongtec twin PSC clamping unit with two polygon coupling seatsMongtec PSC unit shown from front and rear, polygon shank couplingMongtec BMT45-R C4x60 PSC clamping unit, mounting face and polygon bore
What is covered in the Mongtec PSC range
The Mongtec PSC Product Catalog Ver 2026.07 is organised into six groups:
PSC clamping units — PSC blanks (BLPSC), CUSA general-purpose receivers, CVDI VDI receivers, CSQUA horizontal lathe receivers, CSQIR square shank internal receivers and CHYD hydraulic actuated receivers with high-pressure cooling.
Adaptors — PSC extension and reduction adaptors, side-lock end mill holders (incl. axial), PSC–ER, PSC–arbor, and SK / HSK / BT to PSC adaptors.
Article numbers by coupling size
PSC32 — Capto® C3 size · 45 published article numbers
PSC40 — Capto® C4 size · 91 published article numbers
PSC50 — Capto® C5 size · 112 published article numbers
PSC63 — Capto® C6 size · 91 published article numbers
PSC80 — Capto® C8 size · 39 published article numbers
PSC100 — Capto® C10 size · 7 published article numbers
Most-published tool body families
ISO family code
Published article numbers
PSC Blank
28
PCLNL
18
SCLCR
18
SCLCL
18
PCLNR
17
SRSCR
15
SRSCL
15
DCLNR
13
DCLNL
13
SDUCR
13
SDUCL
10
DSKNR
9
DSKNL
9
SVQBR
9
SVQBL
9
DCRNR
8
DCRNL
8
DDJNR
8
DDJNL
8
DSRNR
8
Article-number tables — 947 published
Every article number in the Mongtec PSC catalogue, with the dimensions the catalogue prints for it. Where the catalogue itself misprints a value we could not verify, the cell is left blank and marked to confirm at RFQ — nothing is filled in by inference.
Mongtec PSC turning tool bodies follow the pattern PSC[size]-[shape][Kr][clamping][hand]-[dimensions]-[insert size],
for example PSC63-DCLNR-45065-12 = polygon size 63, D-clamping (platen), C-shape insert, L geometry, right hand,
body dimensions 45/065, insert size 12. Clamping types are D (platen), P (hook) and S (screw); hand is R (right), L (left) or N (null).
Suffix HP denotes high-pressure coolant and C denotes top-and-bottom cooling.
Frequently asked questions
Is PSC the same as Coromant Capto®?
PSC (polygon shank coupling) is the interface standardised as ISO 26623. Coromant Capto® is Sandvik Coromant's
implementation of that polygon coupling and is the origin of the geometry. Because the coupling is an open ISO standard, the sizes
correspond: PSC32 = C3, PSC40 = C4, PSC50 = C5, PSC63 = C6, PSC80 = C8, PSC100 = C10.
Mongtec is an independent tooling brand and is not affiliated with Sandvik Coromant.
PSK (Polygon-Schaft-Kegel) is the German designation for the same ISO 26623 coupling, commonly written PSK C4, PSK C6 and so on
in European catalogues. PSK C6, PSC63 and Capto® C6 all refer to polygon size 63.
Does Mongtec supply PSC clamping units and blanks?
Mongtec publishes 137 right-angle machining head models — BT30, BT40 and BT50 spindle interfaces, with ER collet, DC chuck, FMB face-mill arbor and BT40 tool-holder outputs.
