Two different gas line sizes, one joint, and no adapter in the box. This Jaycar 3/8" to 5/16" SAE reducer nut bridges that gap in a single machined brass piece. Made from solid brass merchant bar to exacting spec. Non-RTM fittings mate with it cleanly on both ends. Thread it in, tighten, and your gas run is continuous again
| brand | JAYCAR |
| type | Reducer Nut |
| size | 3/8" to 5/16" |
| thread_standard | SAE |
| material | Brass |
| compatibility | Non-RTM fittings |
| application | Automotive & outdoor electronics gas lines |