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I have been attempting to find the name of this object:

enter image description here

The website where I got the picture from calls them "barrel bolts", however searching for that name on shopping websites has not shown any similar parts.

Do you know of other names for this?

5 Answers 5

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Some call them female to female standoffs. I know product recommendations are OT in answers, so I'm not recommending them, just including a couple of links that may help your search.

https://apexfasteners.com/fasteners/standoffs/female-female-standoffs

https://www.fastenal.com/product?query=female%20-%20female%20standoffs&fsi=1

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I have found a few alternate names:

  • Threaded tube

  • Binding screws

  • Book screws

  • Binding rivets

  • Standoff

  • (+ see comment)

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    also binder bolts and a curious one, sex bolts
    – fred_dot_u
    Apr 5, 2023 at 22:54
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    @fred_dot_u sex bolts, aka chicago bolts, have a male side and a female side only. OP's example might be "double chicago bolt"
    – Criggie
    Apr 6, 2023 at 10:14
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    We called them spacers when used to mount PCBs inside of cases.
    – Turbo
    Apr 6, 2023 at 13:59
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    @Turbo, a better term for that application is "standoff".
    – isherwood
    Apr 6, 2023 at 14:00
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    Ok. I've been building PCs since the 90s and no one that I've encountered calls them "spacers", including board literature. That's a very generic term, like calling a Mason jar a "container". You do you. :)
    – isherwood
    Apr 6, 2023 at 15:05
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Perhaps the closest I could find at the local hardware store (Menards) was "Threaded spacer"

threaded spacer item

Not exact but you can also maybe use:

  • "Binding Posts", "Screw Posts", or "Post with Screw". One side is fixed while the other side is threaded.

binding post image

  • "Coupling Nut". Both sides are threaded, but they're usually chunkier for the given diameter

coupling nut image

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    slightly tangential, but worth noting: smaller format hardware stores (Like Ace, or-- if you happen to live in Minneapolis-- Jerry's Do It Best) will often have a lot of really obscure hardware that the big box places (Menards included) don't carry. Their prices are usually quite reasonable, too. Those are always my first stop for this sort of item. That said, Menard's also carries an impressive number of weird hardware items. Either option is almost always better than the Big Orange Place.
    – Z4-tier
    Apr 7, 2023 at 15:19
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  1. "Inter Screws"
  2. "Cabinet Joining Bolts" (usually much shorter than these.)
  3. "Cabinet Connectors"

The end pieces on their own, something like "Socket Barrel Nuts"

If searching for them, I think the key word is "Connector" thought that will also tend to display "Furniture Connector Bolts" or "Worktop Connector Bolts", both of which are rather different items.

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The right name is Patent bolt(s).

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    – Community Bot
    Apr 6, 2023 at 21:53
  • What is the source of your information that makes this the "right" answer? I've heard all the other terms in the other answers, but never "Patent bolts"...
    – FreeMan
    Apr 7, 2023 at 11:37
  • A quick googling suggests this is another name for chicago bolts, and is missing the double-sided nature that OP is searching for.
    – Criggie
    Apr 7, 2023 at 22:15

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