Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D45-100 found under Spacer Ring by Roper Industries Inc Roper Pump. The National Stock Number assigned to this part is 5365010593562, and the Federal Supply Class is 5365 Bushings Rings Shims And Spacers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D45-100.