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2-1/2 in Craftsman locking hose: measured bore 2-1/2 in, cuff approx 2-1/4 in OD. Which tool dust ports it fits directly and where a reducer is needed.

Updated 05 September 2026.

PORT / HOSE

2-1/2 in Craftsman locking hose diameter

The real bore and cuff diameter of the 2-1/2 in Craftsman locking hose and what it connects to.

OD57.1 mm2-1/4 in
ID57 mm2-1/4 in, 57 mm

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

Measured hose dimensions

Fitting typefemale cuff (goes over a port or into a socket)
Inner diameter / bore (ID)2-1/4 in, 57 mm
Cuff outer diameter (OD)2-1/4 in
Nominal size2-1/2 in, cuff approx 2-1/4 in OD
Mating diameter (mm)57

Shop notes

Used on: Craftsman wet/dry vacuums with the 2-1/2 in locking fitting.

The Craftsman 2-1/2 in hose shares the 2-1/4 in working cuff of the wider 2-1/2 in class, so power-tool adapters made for Shop-Vac and Ridgid cross over to it directly.

Questions and answers

What is the fitting type of the 2-1/2 in Craftsman locking hose diameter?

female cuff (goes over a port or into a socket)

What is the inner diameter / bore (id) of the 2-1/2 in Craftsman locking hose diameter?

2-1/4 in, 57 mm

What is the cuff outer diameter (od) of the 2-1/2 in Craftsman locking hose diameter?

2-1/4 in

What is the nominal size of the 2-1/2 in Craftsman locking hose diameter?

2-1/2 in, cuff approx 2-1/4 in OD