Spring nuts hold themselves in place, so they won't slide down vertical rails.

Self-aligning nuts have a ridge that keeps them centered in the T-slot.

Spring-tab nuts have a flexible tab on the side that holds them in place on vertical rails. It also compensates for different slot depths.

Spring-loaded ball nuts hold themselves in place, so they won’t slide down vertical rails. The ball glides over holes, so they’re easy to reposition.

Button head screws are more compact, so they're better for tight spaces than other screws for T-slotted framing.

Flanged button head screws have a wider head than standard button head fasteners, so you don’t need a washer for wide mounting holes.

Socket head screws have a deeper drive than other head styles, so they withstand more torque for a tighter hold.

Set screw nuts can be tightened in place, so they won’t budge, even on vertical rails, until you unscrew them.

Push-in nuts clip into the rail and expand when you tighten the screw. Use them to install lightweight objects such as document holders.

Nuts with a handle are easy to grip and drop in place. The flexible rubber handle bends to fit underneath objects mounted to the rail.

Hammer nuts drop in to the slot and turn into place when the screw is tightened.

Nuts with a stud can be tightened in place with a socket wrench. When the line on the end of the stud is perpendicular to the rail, the nut is properly in place.

Static-control nuts have serrations that pierce the anodized coating of the rail, which dissipates static charges to protect sensitive electronic equipment.

Offset nuts have a mounting hole close to one end, so you can install them next to corners and rail ends.

Stainless steel is stronger than plastic and more corrosion resistant than steel. It withstands salt water and chemicals.