If it doesn't need to be 'authentic' you can use a £5 clamping type bolt that fits through both sides. Depends how big the threaded side is but it worked for the Raleigh:
@hippy started
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If it doesn't need to be 'authentic' you can use a £5 clamping type bolt that fits through both sides. Depends how big the threaded side is but it worked for the Raleigh: