5/16" Flare x 3/8" Male Brass Adapter - Warren Pipe and Supply
Watco® Brass Adapter Pin - 3/8"-16 And 5/16"-18 | HD Supply
Triad-Orbit 5/8" to 3/8"-16 Camera Adapter 3/8ADA B&H Photo Video
Amazon.com: Brass Hose Barb Reducer, 3/8" to 5/16" Barb Hose ID, Reducing Barb Brabed Fittings Splicer Mender Union Air Gas Water Fuel Line Heater Garden Pond Poly Tubing Adapter (Pack of 2) :
3/8" NPT Male To 5/16" Inverted Flare Female Adapter Fitting - BF56 - Affordable Street Rods
LTWFITTING 5/16 in. O.D. Comp x 3/8 in. MIP Brass Compression Adapter Fitting (5-Pack) HF685605 - The Home Depot
Amazon.com: Fuel Rail Adapter Fittings Feed/Return 6AN Male to 3/8" and 5/16" (Female) Push-On EFI Fitting : Automotive
LTWFITTING 5/16 in. O.D. Comp x 3/8 in. MIP Brass Compression Adapter Fitting (5-Pack) HF685605 - The Home Depot
Hillman 5-Pack 5/16-in x 3/8-in Threaded Coupling Adapter Fitting in the Brass Fittings department at Lowes.com
JEGS 159202: Captive Nut Adapter Fitting 5/16" Hard Line x 3/8" Hose Barb - JEGS
LTWFITTING 5/16 in. ID Hose Barb x 3/8 in. MIP Lead Free Brass Adapter Fitting (5-Pack) HFLF39185605 - The Home Depot
CAMVATE 3/8"-16 Female to 5/8"-27 Male Mic Stand Thread C1513
Amazon.com: ICT Billet 5/16 Fuel Rail Male Quick Connect to 3/8" NPT Adapter Fitting Hose Thread Fuel Oil Gas Coolant Connector Pipe End Braided Plumbing Port Fluid Aluminum AN817-01-06NP : Automotive
Lead Free Brass Compression Male Adapters - 5/16"T x 3/8" MIP
3/8" to 5/16" Fuel Line Adapter Fitting
5/16" Compression x 3/8" Female Brass Adapter - Warren Pipe and Supply