What is the exact name of this screw type?


  • It looks like the posts/screws we used to use in hanging an old-fashioned wall mount telephone - the kind with cords and all that stuff.
    – dbw
    Commented Mar 21, 2023 at 20:08

5 Answers 5


Another name is keyhole hanger:

enter image description here

Photograph from Walmart.

  • 1
    This comes closest to a generic industry term. +1
    – isherwood
    Commented Mar 16, 2023 at 15:52
  • 1
    And here I was, thinking that the keyholes were designed to be used with a not-fully-screwed-in screw.
    – bracco23
    Commented Mar 17, 2023 at 17:18
  • @bracco23 I definitely identify with loose screws. When hanging wide objects on wavy walls you can tweak the screws to get things as tight as desired. OTOH, on a flat wall the extra flange on the keyhole hangers should reduce items scuffing the wall.
    – HABO
    Commented Mar 17, 2023 at 17:37

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.

enter image description here

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.

  • It would be very helpful (and is actually required by SE rules) if you would edit to include the source of your image.
    – FreeMan
    Commented Mar 22, 2023 at 13:49

Bear claw hanger screw


Modular Screw, with Wood Screw Thread



  • "Modular screw" is a broad category implying two stages of threading, etc. Many composite deck screws could be called "modular", having threads for the decking and framing in distinct sections. It's not specific enough to describe this particular screw.
    – isherwood
    Commented Mar 16, 2023 at 15:58
  1. Looks like aircrete anchor:

enter image description here



  1. Or a plasterboard anchor:

enter image description here


  • 2
    that screw is all one piece
    – jsotola
    Commented Mar 16, 2023 at 7:59
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    As it’s currently written, your answer is unclear. Please edit to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers in the help center.
    – Community Bot
    Commented Mar 16, 2023 at 8:47
  • 1
    Links are not answers (two year from now, those links might no longer work). Each posting should instead be a complete, self-contained answer. Links should be provided only so that people can fact-check and do further research. Commented Mar 16, 2023 at 14:01
  • 3
    Please don't take the downvotes personally - that's just users disagreeing with the answer. Don't be discouraged !
    – Criggie
    Commented Mar 17, 2023 at 1:08
  • NP. I understand why disagreing. Do not know why there are pictures when i put only links for clarification and to easy future search.
    – k_z
    Commented Mar 22, 2023 at 11:17

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