Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AR4.11.8 IT29 found under Ring Retaining by Kone Industrial Oy. The National Stock Number assigned to this part is 5325014450757, 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 AR4.11.8 IT29.