Went back to my mates heavy engineering workshop to have more of pick through unwanted "stuff" mainly fasteners.
Most were in sizes way out of my league, but managed to pick up more SS M6/8/10/12 fasteners, offcuts of steel bar 20 - 40mm, All thread rod from 10 to 42mm. 25x25x3mm SS angle also some 20mm SS rod.
Amongst the fasteners was these Cu M6 threads headless screws.
Anybody have an idea what they are for?

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