Canon YA2-0929 EF Screws
Genuine Canon collar retaining screws for the collar used in the EF 70-200 2.8 L USM, EF 70-200 2.8 L IS USM, and the EF 70-200 2.8 L IS II USM lenses.  Package of 1 screw. Made by Canon Japan.
The collar used with this screw is in stock here.
Canon CD1-3111 S330 Screws
Canon CB5-5518 EOS Screws
Canon CB5-3951 EF-EOS Screws
Canon YB2-1326 Collar Screw
Genuine Canon screw to retain all sizes of collar YB2-1328 for the EF 16-35 2.8 L II USM lenses and other Canon imaging products.  Package of 1 screw. Made by Canon Japan.
Canon CB3-5187 EOS Screws
Canon XA1-7170-227 EOS Screws
Canon CA2-4585 EF Screws
Canon CD1-4046 Case Screws
Canon Parts, Cameras - Digital Powershot, Cameras - Digital SLR, Parts, EF EF-S Lenses, Powershot S Series, Screws - Genuine Canon