Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D50-0006 ITEM 14 found under O Ring by Danco Valve Company. The National Stock Number assigned to this part is 5331016035455, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D50-0006 ITEM 14.