Cga580 vs Din477 6: specs compared
Updated 05 September 2026.
4
specs differ
Cga580 and Din477 6 differ on 4 specs: designation, size / thread, seals on, rating / role.
| Spec | Cga580 | Din477 6 |
|---|---|---|
| Designation | 0.965"-14 NGO RH | W21.8 x 1/14" RH |
| Size / thread | 0.965"-14 NGO (National Gas Outlet), right hand, external | W21.8 x 1/14" (21.8 mm, 14 TPI) right hand, external |
| Fitting form | cylinder valve outlet nut, external | cylinder valve outlet nut, external |
| Seals on | nylon or fibre washer inside the nut against the valve outlet | captive O-ring or washer in the nut against the valve outlet |
| Rating / role | the North American connection for nitrogen, argon and beer-gas (N2/CO2 mix) cylinders, up to 3000 psig | the German DIN 477 designation for the European CO2 outlet, the same physical thread as W21.8 and BS 341 No.8 |
Questions and answers
How do Cga580 and Din477 6 compare?
Cga580 and Din477 6 differ on 4 specs: designation, size / thread, seals on, rating / role.