What is the exact name of this screw type?
It is named
bear claw hanger screw most often on the internet.
other names found are
double headed screw and
binding post screw
Your photo shows one of two similar types of screws.
The type not shown in your photo is consumer-oriented, and searches for "bear claw screw" give lots of examples, as does "double headed screw".
Your photo shows the type used in cabinetry constructed from sheet goods. The threaded section is short and fat, optimal for gripping in to the face of, say, 3/4" particle board.
Off-label it can be used how ever one wants. But its small head and short gap (between the head and the flange) make it a poor choice for using it as a hanger bolt for a keyhole slot routed into wood. Instead, it is designed and dimensioned to mate with a special plate. The plate is typically mounted into a recess that is routed into the edge of the sheet stock.
If from the US, the one in your photo is likely made by Hafele, who calls it a Modular Screw. They can also be found on KnappConnectors, who call it a Shoulder Screw for use in there MODULAR product line, or Mod-eez line. If your username 'cern' regards where you work, Knapp is Europe based. If you are looking for more of the same, make sure you get them from the same supplier as of your plates, otherwise the dimensions might not work out.
Nail, sinker, spike, brad, tack, pin ...? When is a machine threaded fastener a screw? when is it a bolt? Names often differ depending on application, also depending on region/country, and also depending on industry, and also depending on audience, and also depending on field, and also depending on whatever your father called it.
On duckduckgo, the best results come from "modular screw", quoted, in my experience.
We used them extensively in a millwork shop building commercial case work in the early 80's. We didn't call them anything.
Bear claw hanger screw
Modular Screw, with Wood Screw Thread
- Looks like aircrete anchor:
- Or a plasterboard anchor: