Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4-ITEM-4 found under by T I Crypton Ltd. The National Stock Number assigned to this part is 5325004432069, 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 4-ITEM-4.