JIC 37º Cap Nut (3000 PSI [207 bar]) (for use with the Pressure/Leak, Hand-operated pump) HYDRA-CHECK™ pressure/leak test connectors are designed exclusively for pressure/leak testing components with JIC male connectors. Simply remove the swivel connector. Then screw in and tighten your HYDRA-CHECK™ pressure/leak connector - you are ready to test! Part Number Dash Number Thread Size Price HC-J-4Q -4 7/16-20 $32.45 HC-J-6Q -6 9/16-18 $23.55 HC-J-8Q -8 3/4-16 $24.95 HC-J-10Q -10 7/8-14 $25.05 HC-J-12Q -12 1-1/6 - 12 $26.15 HC-J-16Q -16 1-5/16 - 12 $27.45 HC-J-20Q -20 1-5/8 - 12 $30.55 HC-J-24Q -24 1-7/8 - 12 $30.75