Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D516B ITEM 46 found under Bushing Sleeve by Martin Decker Totco Inc. The National Stock Number assigned to this part is 3120012636796, 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 D516B ITEM 46.