[jreuter]

1073 regularly uses builds our chassis from 8020 - the 1 inch "1010" series.

The following fasteners are the ones we use most. The price is from an order a couple years ago, but it will give you an idea of what to expect.

Part Number Price
Butterfly 3381 $1.50
Single Plate 3382 $0.21
Double Plate 3280 $0.69
Drop in 3376 $1.70

The butterfly's are used for right angle mounting.
The single and double plates are for general purpose mounting of other items to the 8020.
The drop-ins allow you to add a fastener into the t-slot without taking an end off to slide it in.

A handful of their T plates and other corner brace plates are useful.
A handful of 1" triangles for the inside corners are also useful
(Sorry, don't have the part numbers handy.)

You will need a variety of 1/4-20 machine screws. I recommend hex drives, and some T-handled hex wrenches.

Hope this helps.