08-11-2021, 06:17 PM
(This post was last modified: 08-11-2021, 06:23 PM by Tony Griffiths.)
It may not be much help - but at least one of these would hold the lens on (assuming the thread to be metric, which it almost certainly will be): https://www.accu.co.uk/777-security-torx...arrel-nuts
Or one of these: https://www.fastenright.com/products/gen...pWEALw_wcB
Various names seem to apply including "sleeve nuts", "barrel nuts", " Female Screws" and "Sex Bolts" - and I didn't make the last one up!
Or one of these: https://www.fastenright.com/products/gen...pWEALw_wcB
Various names seem to apply including "sleeve nuts", "barrel nuts", " Female Screws" and "Sex Bolts" - and I didn't make the last one up!