Class Information
Number: 470/206
Name: Threaded, headed fastener, or washer making: process and apparatus > Implement, e.g., die, etc. > Nut or washer arbor
Description: Subject matter wherein the component is specially adapted for supporting a internally threaded fastener or an annular element adapted to be placed beneath the bearing surface of a bolt head, nut, or similar article during a forming operation.
Patents under this class:
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