Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 170390 NO 1B 1 1 2IN found under Bushing Sleeve by Vogt Edward Valve Co. The National Stock Number assigned to this part is 3120015333854, 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 170390 NO 1B 1 1 2IN.