Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 055940 ITEM 6 found under Ring Rod Piston by Brudi Inc. The National Stock Number assigned to this part is 3040015248289, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 055940 ITEM 6.