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Pivoting bolt

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Roger Hulett24/04/2019 17:33:36
126 forum posts
9 photos

I have a bolt which,after the nut has been threaded on a certain distance,pivots downwards,effectively stopping the nut from running off the bolt. I wonder if anyone knows the name of this type of bolt and,indeed,if they are currently available. I do not relish the idea of making some. It is from a 1920 motorbike.

David Standing 124/04/2019 17:52:20
1200 forum posts
45 photos

A photograph, as ever in these situations, would help! smiley

Hopper25/04/2019 10:59:45
3513 forum posts
68 photos

I think it was an idea that did not catch on. Never seen or heard of such bolts in half a century of messing with machinery, including 1920s motorbikes. But also sure would like to see a photo or drawing of such.

I'd say your choices are make your own -- could be an interesting exercise but can't quite visualize it -- or use holes and split pins like most other bikes of the era.

What sort of bike is it from, and what part does it secure?

JasonB25/04/2019 11:28:44
15167 forum posts
1548 photos

Sounds like a threaded version of a clevis pin like this one with an end that pivots to lock in place.

Sandgrounder25/04/2019 11:56:37
156 forum posts
2 photos

I've not seen a threaded version before, but If you Google 'drop nose pin' and select images you'll see plenty of variations.

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