Post Firestone vs Firestone pin-lock keg post (gas 9/16"-18: specs compared
Updated 05 September 2026.
3
specs differ
Post Firestone and Firestone pin-lock keg post (gas 9/16"-18 differ on 3 specs: designation, size / thread, rating / role.
| Spec | Post Firestone | Firestone pin-lock keg post (gas 9/16"-18 |
|---|---|---|
| Designation | 9/16"-18 UNF | gas 9/16"-18, liquid 5/8"-18 |
| Size / thread | 9/16"-18 UNF (about 14.3 mm major) | gas post 9/16"-18 UNF, liquid post 5/8"-18 UNF (different sizes) |
| Fitting form | UNF male post thread | UNF male post thread |
| Seals on | poppet inside the post; post base O-ring seals to the keg lid | poppet inside the post; post base O-ring seals to the keg lid |
| Rating / role | gas and liquid posts share the thread; disconnect snaps over the outside | Firestone, Challenger and Super Challenger pin-lock kegs |
Questions and answers
How do Post Firestone and Firestone pin-lock keg post (gas 9/16"-18 compare?
Post Firestone and Firestone pin-lock keg post (gas 9/16"-18 differ on 3 specs: designation, size / thread, rating / role.