Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XE18100 found under Cap Snap Fastener by Trw Inc. The National Stock Number assigned to this part is 5325010506193, 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 XE18100.