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What is the exact name of this screw type?

screw

isherwood
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cern
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  • 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 Mar 21 '23 at 20:08

5 Answers5

22

Another name is keyhole hanger:

enter image description here

Photograph from Walmart.

HABO
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    This comes closest to a generic industry term. +1 – isherwood Mar 16 '23 at 15:52
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    And here I was, thinking that the keyholes were designed to be used with a not-fully-screwed-in screw. – bracco23 Mar 17 '23 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 Mar 17 '23 at 17:37
16

It is named bear claw hanger screw most often on the internet.

https://duckduckgo.com/?q=bear+claw+hanger+screw&iax=images&ia=images

other names found are double headed screw and binding post screw

jsotola
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10

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.

Tim
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Will
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  • It would be very helpful (and is actually required by SE rules) if you would [edit] to include the source of your image. – FreeMan Mar 22 '23 at 13:49
0

Bear claw hanger screw

aka

Modular Screw, with Wood Screw Thread

hafele

hafele

Traveler
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  • "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 Mar 16 '23 at 15:58
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  1. Looks like aircrete anchor:

enter image description here

https://www.klium.com/fischer-ftp-k-4-cellenbetonanker-78411-483561

https://www.fischer-international.com/en/products/standard-fixings/plastic-fixings/turbo-aircrete-anchor-ftp-k

  1. Or a plasterboard anchor:

enter image description here

https://iponcomp.com/shop/product/fischer-24556-plasterboard-anchor-metall-gkm-100-pcs/1687700

Criggie
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k_z
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    that screw is all one piece – jsotola Mar 16 '23 at 07:59
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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 Mar 16 '23 at 08:47
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    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. – Ray Butterworth Mar 16 '23 at 14:01
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    Please don't take the downvotes personally - that's just users disagreeing with the answer. Don't be discouraged ! – Criggie Mar 17 '23 at 01:08
  • 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 Mar 22 '23 at 11:17
  • There are pics because Criggie edited your answer to include them. This saves people the time & effort of clicking a link (which many may not do to a site they're not familiar with) to see what you're talking about. It helps make for a more complete answer. – FreeMan Mar 22 '23 at 13:48