The Coast to Coast SAE Flare Nut 5/16" is the small bit of gear that keeps a flared copper line tight on your gas setup. The nut grips a 5/16" tube flare and pulls it into a standard SAE seat on valves, regulators or tees. That means cleaner joins on caravan and RV gas runs when you want lines to stay put across rough tracks.

The nut matches standard SAE flare hardware sized for 5/16" copper tube, so you can swap it in with other copper pipe components without mucking around. Coast to Coast tags it as part number 9999052 with SKU 550-00624, which helps when you are chasing spares mid-trip. Pair it with matching 5/16" tube and fittings and you have a smart buy for keeping gas plumbing tidy.

• SAE flare nut sized to 5/16"
• Suits copper pipe gas fitting layouts
• Ideal for caravan and RV installations
• Matches standard SAE flare seat geometry
• Part of Coast to Coast copper pipe range
• Product type listed as flare nut
• Part number 9999052 for easy reference
• SKU 550-00624 used for ordering
• Compact hardware for tight connection spaces
• Suitable as a spare fitting for repairs

Q: Can this flare nut be reused after disassembly?

Yes, this flare nut can usually be reused if threads and seating faces remain undamaged. Always check the nut for visible wear on the internal seat and threads before refitting. If the nut shows rounding, cracking, or galling, replace it instead of reusing. Reflaring the tube end may also be needed if the original flare is marked or distorted.

Q: Does this nut require a specific type of tube material?

This nut is intended for use with copper tube sized to 5/16". Matching the tube material and size to the flare hardware helps the seat form correctly under tightening. Using the correct copper tube keeps wall thickness and flare angle within expected ranges. That in turn helps the joint cope with vibration and temperature changes.

Q: Should thread sealant or tape be used with this flare nut?

No, sealant or tape is not used on the flare sealing face. The metal-to-metal contact between the 5/16" flare and the mating seat forms the seal when the nut is tightened. Any sealant on the flare faces can interfere with that contact. The nut threads mainly supply clamping force and generally do not require sealing compounds.

Q: Is this flare nut suitable as a general spare for on-road repairs?

Yes, many travellers carry a spare 5/16" flare nut for gas line repairs. A single spare nut can help recover from thread damage or rounding during a roadside fix. Keeping one in the toolbox reduces downtime if a fitting is dropped or stripped. Always confirm your system uses 5/16" SAE flare connections before relying on it as the main spare.

• Suits connections using SAE flare seats sized to 5/16"

• Intended for copper pipe and gas fitting layouts in caravan and RV installations

• Fitment requires matching male flare fittings and correct 5/16" tubing size

• Installation should follow relevant gas fitting standards and local regulations