[Balloon] Fastenings ?

Folks,
We want to mount an accessory board on top of a Balloon (2) board. The
mounting holes in Balloon board are very small, and the obvious
injection-moulded nylon widgets are too big to fit them.
Can someone suggest suitable fastenings ? 2mm plastic bolts would do
but they are not in Farnell or RS catalogues :-(
Thanks
LvS
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Laurie van Someren Aleph One Ltd Old Courthouse Bottisham
CAMBRIDGE CB5 9BA UK t: +44 (0)1 223 811 679 www.aleph1.co.uk