# Trying to identify a type of hinge? **URL:** \ **Category:** Factual Questions\ **Created:** [January 30, 2025, 3:57am UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603 "2025-01-30T03:57:12Z")\ **Posts on this page:** 18\ **Page:** 1
**Author:** ![HoneyBadgerDC](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/honeybadgerdc/32/1033_2.png) [@HoneyBadgerDC](https://boards.straightdope.com/u/HoneyBadgerDC)\ **Post date:** [January 30, 2025, 3:57am UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/1 "2025-01-30T03:57:12Z")
The best way I can describe is top and bottom are identical but one slightly smaller as it fits inside the other. It would be like two pieces of channel where the flanges were cut to a peek like a tent, say 2" There is a hole drilled close to the top of the peek. A rod slides through all the holes connecting the two pieces.? ---
**Author:** ![Beckdawrek](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/beckdawrek/32/3647_2.png) [@Beckdawrek](https://boards.straightdope.com/u/Beckdawrek)\ **Post date:** [January 30, 2025, 4:50am UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/2 "2025-01-30T04:50:41Z")
Pinned hinge. ---
**Author:** ![markn\_1](https://avatars.discourse-cdn.com/v4/letter/m/f9ae1b/32.png) [@markn\_1](https://boards.straightdope.com/u/markn_1)\ **Post date:** [January 30, 2025, 5:27am UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/3 "2025-01-30T05:27:07Z")
It sounds vaguely like a pinned hinge, but I don’t understand the references to a “top and bottom”, or “cut to a peak like a tent”. Can you post a photo? ---
**Author:** ![DaveUnknown](https://avatars.discourse-cdn.com/v4/letter/d/94ad74/32.png) [@DaveUnknown](https://boards.straightdope.com/u/DaveUnknown)\ **Post date:** [January 30, 2025, 5:36am UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/4 "2025-01-30T05:36:16Z")
deleted, never mind ---
**Author:** ![HoneyBadgerDC](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/honeybadgerdc/32/1033_2.png) [@HoneyBadgerDC](https://boards.straightdope.com/u/HoneyBadgerDC)\ **Post date:** [January 30, 2025, 5:36am UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/5 "2025-01-30T05:36:27Z")
I don’t have a picture but imagine 2 flat pieces of wood sitting on top of each other. Put this hinge in-between the two and the bottom would swing back and forth. I looked up swivel head hinges and found simila ---
**Author:** ![HoneyBadgerDC](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/honeybadgerdc/32/1033_2.png) [@HoneyBadgerDC](https://boards.straightdope.com/u/HoneyBadgerDC)\ **Post date:** [January 30, 2025, 1:36pm UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/6 "2025-01-30T13:36:57Z")
[![](https://allsecurityequipment.com/cdn/shop/products/LiftMaster-Specialty-Roller-Cage-Bearing-Hinge-Flat-Mount-2180SS-All-Security-Equipment-1.jpg?v=1657190513&width=900) ](https://allsecurityequipment.com/cdn/shop/products/LiftMaster-Specialty-Roller-Cage-Bearing-Hinge-Flat-Mount-2180SS-All-Security-Equipment-1.jpg?v=1657190513&width=900) Similar to this but flat mounting on both sides and no bearings ---
**Author:** ![HoneyBadgerDC](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/honeybadgerdc/32/1033_2.png) [@HoneyBadgerDC](https://boards.straightdope.com/u/HoneyBadgerDC)\ **Post date:** [January 30, 2025, 1:58pm UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/7 "2025-01-30T13:58:00Z")
It keeps telling me I cannot imbed a media image?? I just did a sketch ---
**Author:** ![Mangetout](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mangetout/32/19_2.png) [@Mangetout](https://boards.straightdope.com/u/Mangetout)\ **Post date:** [January 30, 2025, 2:02pm UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/8 "2025-01-30T14:02:26Z")
Flush mounted hinge sounds like what you are describing [![](https://cdn.aws.toolstation.com/images/141020-UK/800/30800.jpg) ](https://cdn.aws.toolstation.com/images/141020-UK/800/30800.jpg) ---
**Author:** ![Mangetout](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mangetout/32/19_2.png) [@Mangetout](https://boards.straightdope.com/u/Mangetout)\ **Post date:** [January 30, 2025, 2:06pm UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/9 "2025-01-30T14:06:07Z")
If not that, does the thing you want look like anything in this page? > **[Types of Hinges: A (Very) Comprehensive Guide](https://doorcontrolsdirect.co.uk/blog/post/122-types-of-hinges-a-very-comprehensive-guide)** > > Types of Hinges: A (Very) Comprehensive Guide ---
**Author:** ![HoneyBadgerDC](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/honeybadgerdc/32/1033_2.png) [@HoneyBadgerDC](https://boards.straightdope.com/u/HoneyBadgerDC)\ **Post date:** [January 30, 2025, 2:10pm UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/10 "2025-01-30T14:10:15Z")
Not even similar to that, the mounting brackets face each other, and are about 3" apart. Look at the left bracket on the image I posted, both sides of the hinge would look like that. ---
**Author:** ![LSLGuy](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/lslguy/32/5813_2.png) [@LSLGuy](https://boards.straightdope.com/u/LSLGuy)\ **Post date:** [January 30, 2025, 2:26pm UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/11 "2025-01-30T14:26:55Z")
So two nested C-shaped bales. Hmm. I do not know the name, but your initial description had me thinking of something just like @Mangetout’s post #8. At least were all on the right track now. ---
**Author:** ![Mangetout](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mangetout/32/19_2.png) [@Mangetout](https://boards.straightdope.com/u/Mangetout)\ **Post date:** [January 30, 2025, 5:06pm UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/12 "2025-01-30T17:06:57Z")
I found a thing that seems to resemble my current understanding of what you’re describing: > **[U Bracket Gate Hinge at Best Price in Ludhiana | Shivam Impex](https://www.tradeindia.com/products/u-bracket-gate-hinge-6015982.html)** > > Shivam Impex - Offering low price U Bracket Gate Hinge in Transport Nagar, Ludhiana with product details & company information. Or this: > **[Large double U hinge with adjustable U-bolt 370 | eBay](https://www.ebay.co.uk/itm/167279731584)** > > Find many great new & used options and get the best deals for Large double U hinge with adjustable U-bolt 370 at the best online prices at eBay! Free delivery for many products. ---
**Author:** ![HoneyBadgerDC](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/honeybadgerdc/32/1033_2.png) [@HoneyBadgerDC](https://boards.straightdope.com/u/HoneyBadgerDC)\ **Post date:** [January 30, 2025, 5:41pm UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/13 "2025-01-30T17:41:03Z")
Thats it!, The large double U hinge!! Now I just have to see if I can find my size. Not hard to make but every time I have to get something welded it costs me a good hit. Thanks! ---
**Author:** ![engineer\_comp\_geek](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/engineer_comp_geek/32/504_2.png) [@engineer\_comp\_geek](https://boards.straightdope.com/u/engineer_comp_geek)\ **Post date:** [January 30, 2025, 5:44pm UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/14 "2025-01-30T17:44:31Z")
> [@HoneyBadgerDC](#): > > It keeps telling me I cannot imbed a media image?? I just did a sketc You can’t upload images directly to the SDMB. You have to upload them somewhere else and then link to them. I personally use Imgur. Plenty of other free pic hosting sites exist. ---
**Author:** ![HoneyBadgerDC](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/honeybadgerdc/32/1033_2.png) [@HoneyBadgerDC](https://boards.straightdope.com/u/HoneyBadgerDC)\ **Post date:** [January 30, 2025, 6:41pm UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/15 "2025-01-30T18:41:32Z")
> [@engineer\_comp\_geek](#): > > I personally use Imgur. Plenty of other free pic hosting sites exist. I will set that up, I don’t know why I didn’t do it al long time ago. ---
**Author:** ![Mangetout](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mangetout/32/19_2.png) [@Mangetout](https://boards.straightdope.com/u/Mangetout)\ **Post date:** [January 30, 2025, 6:49pm UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/16 "2025-01-30T18:49:57Z")
Does it have to be the case that one of the U-brackets fit inside the other? If not, it would be easy to make something like this from two U-brackets of the same size, plus a long bolt. - arranging them like the shapes in this image (which has nothing to do with hinges, but shows two interlocked U shapes) [https://c8.alamy.com/comp/T19MMT/interlocking-colorful-u-shapes-generic-icons-design-elements-four-versions-T19MMT.jpg](https://c8.alamy.com/comp/T19MMT/interlocking-colorful-u-shapes-generic-icons-design-elements-four-versions-T19MMT.jpg) ---
**Author:** ![jnglmassiv](https://avatars.discourse-cdn.com/v4/letter/j/f07891/32.png) [@jnglmassiv](https://boards.straightdope.com/u/jnglmassiv)\ **Post date:** [January 30, 2025, 6:58pm UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/17 "2025-01-30T18:58:29Z")
I get a lot more looking for ‘u bolt hinge’ is than double U. ‘Weld on’ seems good, too. ---
**Author:** ![HoneyBadgerDC](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/honeybadgerdc/32/1033_2.png) [@HoneyBadgerDC](https://boards.straightdope.com/u/HoneyBadgerDC)\ **Post date:** [January 30, 2025, 7:06pm UTC](https://boards.straightdope.com/t/trying-to-identify-a-type-of-hinge/1013603/18 "2025-01-30T19:06:21Z")
> [@Mangetout](#): > > Does it have to be the case that one of the U-brackets fit inside the other? If not, it would be easy to make something like this from two U-brackets of the same size, plus a long bolt. I am not sure, I think that would work as long as the swinging end of it remains centered. I am using Unistrut for my frame and I just realized I can get by with 1 U shape, just grind the end of my Unistrut to receive it. A 2" wide U 3 maybe 3/1/2 high would work perfectly. I will play with some cardboard to nail down my dimensions.