Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number JAR 3 8 BORE STD KEY found under Bushing Sleeve by Maurey Mfg Co. The National Stock Number assigned to this part is 3120012640252, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like JAR 3 8 BORE STD KEY.