2PCS 3-4-6AN-8-10-12-16-20 Male Flare Weld on Bung Fitting Fuel Oil Tank Adapter
AN6 Size - The thread size of 6AN weld bung is 9/16-18 UNF. AN3 Size - The thread size of 3AN weld bung is 3/8-24 UNF. AN4 Size - The thread size of 4AN weld bung is 7/16-20 UNF. AN8 Size - The thread size of 8AN weld bung is 3/4-16 UNF.