for me digikey is a labyrinth? do you have a link to specific item? this is my best guess:
http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=834051-ND
ok,
that had not occured to me.
In that case try Jameco, or your local electronics store, as Digikey has a $35 minimum order.
Jameco's catalog is really good for beginners, as they have pictures and explanations of all their components. )Just don't order form them UPS Ground to Canada, as it will add $60 to the order in brokerage fees 
)
D
Digikey Part numbers
497-1361-5-ND HCF4051BEY
568-1689-5-ND HEF4051BPN
MC14051BCPGOS-ND MC14051BCPG