Idex® Super Flangeless™ Fitting Assemblies, 1/4-28 and 5/16-24 Flat Bottom from Cole-Parmer United Kingdom
Port Fitting, 1/4-28 Flat Bottom, For 1/16" OD Tubing - Rudolph Research Analytical
Super Flangeless™ Nut, Short, PEEK, 1/4-28 Flat-Bottom, for 1/16" - 1/32" OD Natural | Chromatography Direct
MINSTAC - 1/4-28 Flat Bottom
Idex Threaded Luer Adapter, Red ETFE, 0.050" Bore, Female Luer x Female 1/4-28 Flat Bottom; 1/EA: Amazon.com: Industrial & Scientific
Upchurch Scientific Tefzel ETFE Union Assembly for 1/16 inch OD Tubing, 0.93 µL, 1/4-28 Flat-Bottom, 0.75 mm Thru-hole, Single - P-710 - £21.11 : Uvison.com