Orifice, Spud, #56, Threaded 16-36 UNS, NRE # 130089-56
Orifice, Spud, #64, Threaded 16-36 UNS, NRE # 130089-64
Orifice, Spud, #72, Threaded 16-36 UNS, #72 Starter Hole, NRE # 130089