Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1642-1-SE-04-M-D-PT found under Sink Service Institutional by Acorn Engineering Company. The National Stock Number assigned to this part is 4510004497159, 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 1642-1-SE-04-M-D-PT.