- Cap Material= Cast Aluminum - Cap OD= 4" - Cap ID Across thread= 3.375 - Cap Thread Pitch= 8 TPI - Lanyard= Yes, 8" W/ Crossbar - Cap Lettering = "Diesel Fuel Only" - Thermal Relief= No
Sizing is designated by the ID of the neck these caps would thread onto, not the OD of the neck or the ID across the threads.
This Cap fits any neck on our site designated 3" NPSL. It is also confirmed that it will fit on any Male 3" NPT nipple.
