JEGS 15945: Brass Hose Adapter for 5/16 in. to 1/4 in. Hose - JEGS
90 Degree 1/4" NPT to 5/16" Hose Barb - BF90 - Affordable Street Rods
Midland Metal Manufacturing Hose Adapter, 1/4 x 5/16 in, Push-On Hose Barb x Female Inverted Flare, 0.62 in Hex, 1.18 in L, 150 psi, Brass - 269604 - Northern Safety Co., Inc.
1/4" X 5/16" Straight Hose Barb
LTWFITTING 5/16 in. ID Hose Barb x 1/4 in. MIP Lead Free Brass Adapter Fitting (25-Pack) HFLF39185425 - The Home Depot
Dixon Reusable Fitting 5/16 in. ID x 11/16 in. OD Hose x 1/4 in. Male NPTF - John M. Ellsworth Co. Inc.