For what it's worth,
I have made new pins for the LP style track using X4140 shafting.
I would have to search out the original note, but it was 'centreless ground' I think?
Anyway they have been on the carrier for probably 10 years now.
several other carrier owners in NZ have used the same material.
I can't comment on forming the head as we don't have the domed end as the pin is held in place with a lead plug.
Rob
LP2 (NZ) MG
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