Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1CR001-87 found under Ring Retaining by Pentair Water Treatment Oh Company. The National Stock Number assigned to this part is 5325013786872, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1CR001-87.