This is a spring-loaded main body of a 338 cabinet slider. My cabinet had two at the top of one door, and both were broken. Replacements can be bought online. Typical replacements have a very thin plastic spine that holds the slider (the part that pops up) in place.

The pictures here show the original (broken) in black, and the replacement in white.

The main body holds the slider in a channel. The slider has wings that can be very gently bent outward with some heat applied at the joint. There is a spring that pushes the slider up in the channel until the wings hit their limit, thus keeping the slider from popping out vertically. That spring is about 5.25mm OD, 14mm long, uncompressed.

The button loads atop a spring in the slider's front. That spring is about 4.8mm OD, 14mm long, uncompressed. Note that the flat on the button is meant to be on the "up" side.

The lid is held to the main shell using two small screws.

The top of the slider holds 4mm OD metal pin. It has a 5mm OD, 1mm thick head. A 7mm cylindrical sleeve goes around the metal pin, and acts like a tire. Ideally, the sleeve has a recessed area at the top so that the pin head ends up flush to the cylinder top. Neither the pin nor sleeve is modeled here.

To assemble, you can screw the lid and shell together. Then insert both springs into the slider, and add the button. Compress the button fully into the slider, and push the slider assembly into the shell from the top. The flexibility of the wings allows it to go in, and then the wings snap out.

This can also be assembled by first putting the slider+springs+button assembly into the shell first, and then attaching the lid down. That's harder, but doable.

As for replacement parts within this replacement part, the hardest thing to find is that 4mm peg. You can find 4mm OD clevis pins online, but they typically come with a 6mm OD flat head. That may work, though. I had a spare from the broken 338.

Modeled in Fusion (including doing a cool Motion Study). Typically anticipated 0.3mm shrinkage.

Printed with PETG. (Using PLA might be too brittle for the wings, but you could also model it so that the wings are "fixed" and you do not use the "push in from the top" assembly approach.)