CO2 M10 vs Pin-lock quick disconnect (pin-lock QD: specs compared
Updated 05 September 2026.
5
specs differ
CO2 M10 and Pin-lock quick disconnect (pin-lock QD differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.
| Spec | CO2 M10 | Pin-lock quick disconnect (pin-lock QD |
|---|---|---|
| Designation | M10 x 1 mm | pin-lock QD, MFL or barb tail |
| Size / thread | M10 x 1 mm metric external thread | locates on the post pins; tail is 1/4" MFL (7/16-20 UNF) or a 1/4"/5/16" barb |
| Fitting form | small metric disposable CO2 cartridge / DIY welding CO2 | notched quick disconnect |
| Seals on | seat in the piercer or valve against the cartridge | O-ring seals over the post; the tail seals by flare or clamp |
| Rating / role | the metric small-cartridge thread used on some soda and DIY CO2 sources | the pin-lock keg connector; taller than a ball-lock QD |
Questions and answers
How do CO2 M10 and Pin-lock quick disconnect (pin-lock QD compare?
CO2 M10 and Pin-lock quick disconnect (pin-lock QD differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.