Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D-WK-492-A71 IT 5-4 found under Collar Bearing by Walz And Krenzer Inc. The National Stock Number assigned to this part is 3110014403600, and the Federal Supply Class is 3110 Bearings Antifriction Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D-WK-492-A71 IT 5-4.