TerraHertz Listed some small fastener/ bolt/screw suppliers in Australia (NSW)
" I'm lucky to live quite close to these great guys:
Premier Fasteners, 3 Ladbroke St, Milperra 2214 ph: 02 9772 1888
http://www.premierfasteners.com.au/They have a HUGE warehouse full of fasteners, and are usually happy to take you for a walk in it to find that obscure thing.
It's quite amusing to take odd screws from some old electronics restoration in there, to see if they have any. About 50/50 they do/don't.
A couple of others:
The Stainless Shop. 170 Taren Point Road Taren Point. NSW 2229 ph: (02) 9525 1777
https://www.thestainlessshop.com.auhttp://www.smallparts.com.au/PO Box 2161, MANSFIELD, Queensland 4122
3239 Old Cleveland Road,
Capalaba West (Brisbane Southside),
Queensland 4157
(9am to 5pm Monday to Friday. Phones from 9:30am)
Fax 07 3245 1017 (International +61 7 3245 1017)
Phone:07 3245 7977 (International +61 7 3245 7977)
http://www.smallparts.com.au/store/categories/sales@smallparts.com.au. "