The most reasonably priced component used on the Nc50 Express 1982 (c) Usa Stand / Step is the Bolt,hex., 6x16.
Some items from this specific schematic: Collar,meter Set, Pin,cotter 1.6x15, Washer,plain,8mm, Bolt,hex.6x22.
The Collar,meter Set is the most widely applied product in the NC50 EXPRESS 1982 (C) USA STAND / STEP ( two times ).