Bsp38 vs 74g threaded CO2 cartridge (5/8"-24 UNF): specs compared
Updated 05 September 2026.
5
specs differ
Bsp38 and 74g threaded CO2 cartridge (5/8"-24 UNF) differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.
| Spec | Bsp38 | 74g threaded CO2 cartridge (5/8"-24 UNF) |
|---|---|---|
| Designation | 3/8" BSP (G3/8) | 5/8"-24 UNF |
| Size / thread | 3/8" BSP (G3/8) parallel | 5/8"-24 UNF external thread |
| Fitting form | parallel pipe thread | larger threaded disposable CO2 cylinder |
| Seals on | flat washer on the thread face | a pierced or valved seat in the holder against the cartridge neck |
| Rating / role | the smaller UK dispense thread on some shanks, John Guest stem adapters and inline taps | single-use 74 gram cartridge for portable dispensers and mini kegs |
Questions and answers
How do Bsp38 and 74g threaded CO2 cartridge (5/8"-24 UNF) compare?
Bsp38 and 74g threaded CO2 cartridge (5/8"-24 UNF) differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.