In reply to oldie:
> . . . so have got loft full of H section large nuts, original hexagonal nuts etc
If you are not deriving much 'pleasure' from them any more, you could always donate them to the Mountain Heritage Trust. That's where I sent most of my old stuff when I had a clear out, including Terrordactyls, prototype Clog ice-axe, Whillans sac, etc.
I kept the first Hexentric 9 I bought in 1975 as it's still useful. The rest of my original rack was given to me by the parents of a lad killed on Nuptse in the early 70s. The No9 Hex was bought in Joe Browns in Capel Curig on my first visit to N Wales as it seemed to offer the best 'value for money' addition and took my rack up to 5 items plus a selection of hawser rope slings, complete with leather wear patches.
Post edited at 11:47