3/8 Flare x 1/4 Female NPT Threaded Brass Adapter - PexUniverse

3/8" male flare x 1/4" female NPT threaded transition adapter connects flare nut (or female flare outlet) to a male NPT pipe/outlet in a straight line. SAE 45° standard.

KOOTANS 3/8 NPT x 1/4 NPT Male Solid Brass Hex Nipples, Heavy Brass Pipe Adapter Fittings Reducing Nipples Connectors 4Pieces, Pipe Fittings - Canada

Flare Male Adaptors - BrassCraft

Brass DOT Compression Fittings Nylon Tubing 45° Elbow, 46% OFF

Plumbing N Parts 1 3/8-in x 1/4-in Brass Threaded Flare Male Adapter Fitting, Pack of 10 PNP-35629

Apollo PEX Female Adapters - Apollo by Mosack Group

LASCO Plumbing Specialties 17-4629 is a 3/8-Inch Flare by 1/4-Inch Female Pipe Thread Brass Adapter. Male flare by female pipe adapter. Brass material

LASCO 17-4629 3/8-Inch Flare by 1/4-Inch Female Pipe Thread Brass Adapter

Propane Tank Connectors

Apollo PEX Female Adapters - Apollo by Mosack Group

TracPipe Counterstrike CSST Pipe 1/2 Auto-Flare Fitting, 47% OFF

Brass Female Connector 3/8 Npt X 1/4 Flare 5 Pcs