TO HOLD CARRIAGE BOLTS
Carriage bolts that have worn loose in the wood are not easy to tighten. Sheet metal lock-washers of the type shown will hold the bolt stationary while the nut is being tightened. A pyramidal point should be ground on the end of the punch so that a square hole can be punched in the centre of the washer. Where there is plenty of space, a piece of sheet steel can be used with the corners turned down to grip the wood.
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https://paperspast.natlib.govt.nz/newspapers/SUNAK19270607.2.113.7
Bibliographic details
Sun (Auckland), Volume 1, Issue 64, 7 June 1927, Page 10
Word Count
85TO HOLD CARRIAGE BOLTS Sun (Auckland), Volume 1, Issue 64, 7 June 1927, Page 10
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