Using specific codes like "meyd646" and "dc015820" suggests you are trying to bypass generic search results to find a exact fit for a repair. When shopping for these technical items:

Could you clarify if you are looking for a or a technical specification sheet for a different type of hardware?

: These specific parts are essential for maintaining the structural integrity and suction power of the vacuum.

: Part number 911582-01 (close to your DC015820 query) is a critical component for the "The Ball" technology in older Dyson units.