470 / | HD | THREADED, HEADED FASTENER, OR WASHER MAKING: PROCESS AND APPARATUS |
1 | DF | PROCESS {5} |
27 | DF | .~ Making headed fastener, e.g., rivet or nail, etc. {2} |
34 | DF | .~.~ Nail type {3} |
35 | .~.~.~ Horseshoe {2} | |
36 | DF | .~.~.~.~> Formed by heat treatment and metal shaping, i.e., wrought type |
37 | DF | .~.~.~.~> Formed by severing, i.e., cut type |