Hole Plug, Hole D 7/16 In, Blk, PK25/ TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.487 INCHES NOMINAL OVERALL DIAMETER: 0.530 INCHES NOMINAL DESIGN TYPE: FRICTION OPENING INSIDE DIAMETER FOR WHICH DESIGNED: 0.437 INCHES NOMINAL PART NAME ASSIGNED BY CONTROLLING AGENCY: PLUG,HOLE DIA.0.44 SPECIAL FEATURES: TEMP RANGE -40 TO 250 DEG F MATERIAL: PLASTIC POLYAMIDE