1/4" (0.170" ID x 0.250" OD) vs 4/7 mm (4 mm ID x 7 mm OD): specs compared
Updated 05 September 2026.
5
specs differ
1/4" (0.170" ID x 0.250" OD) and 4/7 mm (4 mm ID x 7 mm OD) differ on 5 specs: inner diameter, outer diameter, barb fits id range, fitting type, working pressure.
| Spec | 1/4" (0.170" ID x 0.250" OD) | 4/7 mm (4 mm ID x 7 mm OD) |
|---|---|---|
| Inner diameter | 0.170 inch (about 4.3 mm) | 4 mm |
| Outer diameter | 0.250 inch (about 6.4 mm) | 7 mm |
| Barb fits ID range | 0.140 to 0.170 inch | |
| Fitting type | push-in barb held by the tube wall | push-in barb sized to the 4 mm bore |
| Working pressure | 0.2 to 1 MPa (about 2 to 10 bar) |
Questions and answers
How do 1/4" (0.170" ID x 0.250" OD) and 4/7 mm (4 mm ID x 7 mm OD) compare?
1/4" (0.170" ID x 0.250" OD) and 4/7 mm (4 mm ID x 7 mm OD) differ on 5 specs: inner diameter, outer diameter, barb fits id range, fitting type, working pressure.