CO2 M10 vs MFL: specs compared
Updated 05 September 2026.
5
specs differ
CO2 M10 and MFL differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.
| Spec | CO2 M10 | MFL |
|---|---|---|
| Designation | M10 x 1 mm | 1/4" MFL (7/16"-20 UNF) |
| Size / thread | M10 x 1 mm metric external thread | 7/16"-20 UNF male thread, 45 degree flare seat |
| Fitting form | small metric disposable CO2 cartridge / DIY welding CO2 | SAE 45 degree flare, male |
| Seals on | seat in the piercer or valve against the cartridge | metal 45 degree flare face, never PTFE tape |
| Rating / role | the metric small-cartridge thread used on some soda and DIY CO2 sources | the homebrew flare standard on regulators, manifolds and disconnect tails |
Questions and answers
How do CO2 M10 and MFL compare?
CO2 M10 and MFL differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.