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I'm trying to find a replacement for a washer / spacer that I lost, and it looks like this:

enter image description here

I know I need one that's M5 in size, and can probably measure the length of the one I've got remaining. But I have no idea what the 'correct' name for this is, so don't know what to search for. Collared spacer? Insert washer?

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I might call it a flanged bushing, except that searching for that term comes up empty. In the past, I posted an answer to a question that is unrelated to this one, but for the result:

steel protector sleeve

It's called a steel protector sleeve and common sizes from my search are 1/4" inch and smaller inside diameter. M6 is close to 1/4" but is not M6. The next common size downward is 3/16" which is 4.7 mm, perhaps closer to M5. This may be a result of my searches based in the USA, or that metric versions do not exist, which is somewhat absurd to consider.

I popped off a quick search to McMaster-Carr with results appearing for flanged sleeve bearings, which are available in M5 inside diameter but are lubricated for taking rotational and axial loading.

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  • You lead me in the right direction! I think I have the answer, have posted separately. A steel protector sleeve looked right, but the only available lengths were quite long, whereas I'm after something only a few mm long. It's a spacer, rather than a sleeve.
    – growse
    Jun 9, 2018 at 21:51
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I think I found the answer. From https://www.accu.co.uk/en/165-washers-spacers - this seems to be called a shoulder washer.

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