825 Piece Hammerlock Cotter Pins Zinc-Plated AssortmentPins are a broad category of Fasteners used to hold components in alignment or fASST. en them together. They typically feature an unthreaded shaft that is inserted through the components holding them in place with friction or a positive lock mechanism. Our storage bins made from cold rolled steel and finished with a rust and acid resistant baked enamel offer superior organization for all of your small parts. When combined with our inventory control