Placed a couple of orders with this supplier, and I have been impressed both times. They sell hardware and bits very handy for pinball repairs.
http://www.pinrestore.com/First order was for some unshielded braid, and just ordered and received a little package with some hard to get unshielded wire (ie like used in a Gottlieb light box). I've seen others post looking for the unshielded wire before, and these guys carry it by the foot, as well as some other interesting bits and pieces that are useful for restoration.
Best of all, you can forget about what the postage calculator says - it'll initially charge your paypal for the auto calculated postage, but as soon as they pack your order Debbie does a refund of the extra, so you only pay for the actual shipping. The last order calculated $15.00, but $8.75 was refunded the next day.
First class service.