JIC/AN Female Fittings.
 
Self Weld JIC/AN fittings, great when manufacturing your own tanks.
 
Available sizes:
 
JIC4 (7/16"-20 UNF)
JIC6 (9/16"-18 UNF)
JIC8 (3/4"-16 UNF)
JIC10 (7/8"-14 UNF)
JIC12 (1 1/16"-12 UNF)
JIC16 (1 5/16"-12 UNF)
JIC20 (1 5/8"-12 UNF)