Grill Hose
Identification guide

SAE flare and NPT grill fittings are not interchangeable

A flare fitting seals at a shaped metal seat. NPT is a tapered pipe thread. Visible threads do not tell you which sealing method or nominal size you have.

This page coversIdentification comparison only. The appliance documentation must name the actual thread and sealing method.
Connector pictures

Compare the photographs and illustrations

A picture can help identify the connector family. It cannot measure a thread, establish pressure, or prove that a part belongs on your appliance. Manufacturer references are linked below each example.

Technical illustration of a 3/8 inch female SAE 45-degree flare swivel hose fitting with its internal seat visibleTechnical illustration
A verified 3/8 in SAE 45-degree female flare hose-end example. The nut's straight internal threads draw the fitting together, while the recessed metal seat makes the seal. This is not a dimensional drawing.Original Grill Hose technical illustration · Geometry reference: MB Sturgis SKU 204003
Common appliance end on low-pressure LP regulator assemblies

3/8 in female flare

Swivel hex nut with an internal flare seat; it seals at the flare, not on pipe threads.

Do not add thread-seal tape to a flare seat. Confirm the exact size and mating male flare.
Traceable manufacturer referencesManufacturer reference for the illustrated 3/8 in female flare hose endMB Sturgis 204003, 3/8 in 45-degree female flare seat x 3/8 in barbManufacturer photograph of the complete female-flare hose endMr. Heater F271161, QCC1 regulator with 3/8 in female SAE flareManufacturer photograph of female flare swivel nutsBrassCraft 114FSV-6, 3/8 in OD tube swivel flare union
Technical illustration of a 3/8 inch male SAE 45-degree flare connector with its cone-shaped sealing nose visibleTechnical illustration
A verified 3/8 in SAE 45-degree male flare example. The protruding cone is the sealing face and the straight flare threads sit behind it. The opposite end on this specific part is 3/8 in male NPT. This is not a dimensional drawing.Original Grill Hose technical illustration · Geometry reference: Ram Products X48X6X6
Appliance or hose-end flare connection

3/8 in male flare

Protruding cone-shaped sealing nose with straight threads behind it.

Male and female describe the sealing geometry, not simply whether threads are visible.
Traceable manufacturer referencesManufacturer reference for the illustrated 3/8 in male SAE flare connectorRam Products X48X6X6, 3/8 in tube flare x 3/8 in male pipeManufacturer photograph of a 3/8 in OD flare connectionDormont 91-1010, 3/8 in OD flare on both ends
A brass NPT pipe plug held between caliper jaws to show its tapered threadsActual photograph
A brass NPT plug showing the tapered thread form. This photograph demonstrates shape only and is not a grill-part recommendation.BenFrantzDale at English Wikipedia, via Wikimedia Commons · CC BY-SA 3.0
Fixed piping, valves, adapters, and some appliance connections

NPT pipe thread

Tapered pipe thread that tightens progressively; nominal size cannot be confirmed from a picture.

Flare and NPT connections are not interchangeable. Gas-rated sealing and installation requirements differ.

Confirm every one of these

  • The manual names SAE flare or NPT and gives the exact nominal size.
  • Male and female refer to the sealing geometry, not simply whether threads are visible.
  • The assembly is approved for the fuel, pressure, flow, and installation.
This page helps identify the fitting. It does not recommend a product.

Use it to understand the fitting names, then return to the exact brand and model record. A visual comparison alone is not enough to show a marketplace link.

Products with published specifications

Manufacturer-specified products

These are manufacturer products for stated models or uses. They are not universal hoses. Check the source and your exact appliance before buying.

Compatibility not verified.

We do not have a single verified product for this category. Product pages often leave out pressure, mating profile, capacity, certification, or model coverage. Use the guided comparison only after confirming those details in current documentation.

Sources

Sources reviewed

Mr. Heater 3/8 in SAE flare assembly example
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