Hillman 0.5-in L x 0.25-in W x 0.25-in D Shelf Pins (8-Pack) in the Shelving Brackets & Hardware department at

Aluminum Bars - Ace Hardware

Hillman - Shelving Brackets - Shelving Hardware - The Home Depot

Plumbing Engineering Design Handbook Vol. 1 - Fundamentals of

Shelf Pins - Shelving Hardware - The Home Depot

Hillman 59758 Nickel-Plated Metric Shelf Pin with

Hillman Shelf Pins

CLOSETMAID Closet Organization - Storage and Cleaning

Steel Bars - Ace Hardware

Hillman Brand (6 Pack) 10 Metal Peg Hook Shelf