A Guide to Fastening Styles: Top Plates, Stems, and Sockets Explained
Colleen Castellani

A Guide to Fastening Styles: Top Plates, Stems, and Sockets Explained

Mount Smarter, Not Harder

Choosing the right caster is only half the battle—the way it mounts matters just as much. The wrong fastening type can cause wobble, instability, or even structural damage. Let’s break down the common fastening styles and where they work best.

Top Plate Mounts

  • Flat, square or rectangular plate

  • Best for heavy-duty and industrial applications

  • Offers maximum surface area and stability

  • Commonly used with toolboxes, shelving, carts

Stem Mounts

  • Includes threaded, grip ring, or friction ring options

  • Great for chairs, light carts, and medical equipment

  • Easy to install into tubes or sockets

Expanding Adapter Sockets

  • Used for hollow legs and tubing

  • Expands inside tubing to form a snug fit

  • Great for adjustable furniture and rolling displays

Bolt Hole or Hollow Kingpin

  • Allows direct mounting with a bolt

  • Works in customized applications with limited space

🔧 Mount it your way—Browse casters by fastening style