1/2" Tube x 1/2" Male NPT Brass DOT Push-to-Connect Male Swivel Elbow / MOUNTING END TYPE: FLAT END ITEM IDENTIFICATION: VARIOUS LAND SYSTEMS CONNECTION STYLE: M67B PLAIN (PIPE) 1ST END CONNECTION STYLE: L38 GROOVED INSIDE (TUBE) 2ND END CONNECTION TYPE: THREADED EXTERNAL PIPE 1ST END CONNECTION TYPE: UNTHREADED INTERNAL TUBE 2ND END NOMINAL THREAD SIZE: 0.500 INCHES 1ST END NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES 2ND END PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNED: STANDARD 1ST END PART NAME ASSIGNED BY CONTROLLING AGENCY: 90 DEGREE SWIVEL MALE ELBOW SPECIAL FEATURES: REF. SAE NO. AA02DD. USE WITH WEATHERHEAD NT100 AIR BRAKE TUBING (SAE J844). MALE PIPE THREAD: 1/2. HEX IS 7/8. MATERIAL: PLASTIC BODY MATERIAL: COPPER ALLOY MATERIAL: COPPER ALLOY OVERALL THREAD SERIES DESIGNATOR: NPT 1ST END