Parker adapter straight pipe P/N 16GBU-S THREAD CLASS 2A 1ST END MAXIMUM OPERATING TEMP 250.0 DEG FAHRENHEIT 1ST RESPONSE 250.0 DEG FAHRENHEIT 2ND RESPONSE THREAD QUANTITY PER INCH 12 1ST END SEAT ANGLE 12.0 DEGREES 1ST END SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL THREAD SERIES DESIGNATOR UN 1ST END NPTF 2ND END Parker inc