button die

button die

[′bət·ən ‚dī]
(design engineering)
A mating member, usually replaceable, for a piercing punch. Also known as die bushing.
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References in periodicals archive ?
Visit: Coun Michael Wilkes takes a tour of Firmin's and admires Lord Nelson's button die.
Designed for small diameter threads from #0 to 3/8", new button dies from Landis Threading Systems are well suited for Brown & Sharpe, Swiss and similar automatics and most live spindles as well as lathes and drill presses.