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Festool DF 500 Domino joiner port: measured 27 mm (D27) hose port. What shop-vac hose fits it and the exact reducer to join it to a 1-1/4, 2-1/2 or 4 inch hose.

Updated 05 September 2026.

PORT / HOSE

Festool DF 500 Domino joiner port dust port size

The measured dimensions of the Festool DF 500 Domino joiner port and the hose sizes it mates with.

OD27 mm1-1/16 in, 27 mm

Rings drawn to scale from the measured diameters in the table below.

Measured port dimensions

Port typemale spigot (hose goes over it)
Outer diameter (OD)1-1/16 in, 27 mm
Manufacturer designation27 mm (D27) hose port
Mating diameter (mm)27

Shop notes

Found on: Festool DF 500 and DF 700 Domino loose-tenon joiners.

The Domino joiners connect to the 27 mm D27 hose. The chip stream from mortising is small, so the narrow 27 mm connection keeps velocity up without a larger hose.

Questions and answers

What is the port type of the Festool DF 500 Domino joiner port dust port size?

male spigot (hose goes over it)

What is the outer diameter (od) of the Festool DF 500 Domino joiner port dust port size?

1-1/16 in, 27 mm

What is the manufacturer designation of the Festool DF 500 Domino joiner port dust port size?

27 mm (D27) hose port

What is the mating diameter (mm) of the Festool DF 500 Domino joiner port dust port size?

27