I am trying to locate two-piece bleeder screws, like the one in the attachment. The assembly consists of an outer bushing with a bleeder screw that screws into it. The bushing has -4 SAE threads and appears to be a 37 degree JIC fitting with an O-ring. The bleeder screw is 1/4” with 1/4 – 28 threads. The working pressure is 3,000 psi. Does anyone know where these can be purchased?