LP08 Stock Screws

I recently bought an Erfurt LP08 and I ordered the repro stock/holster from Sarco. The stock arrived but the holster and leather parts of the rig are on back order. When they do arrive, I expect to have to find my own screws and washers to attach the leather parts to the stock. Some research with photos indicates the four smaller washers are about 3/16" diameter and the single large washer is about 5/8" in diameter. The screws should be bright steel, slot head, and the domed finish washers should be brass. Home Depot has about what I need. Before I buy the parts, does anyone have an original stock from which they can give me the washer and screw head diameter dimensions? Also, I have seen color photos which seem to indicate that all five washers were brass. There was one letter posted to the forum some time ago which said the four smaller washers were brass and the one larger washer was bright steel. Were all large washers steel or brass or were there some of both kinds?