[Dan Dibble]

I just got a new tap and die set and the dies are adjustable. Why???

Thanks, Dan

 

[TJpwr]

(just a guess) So you can "loosen" the die up to chase existing threads rather than cut new ones. I've found it's sometimes better to have a chaser die than a cutting die when you only need to clean threads.

JMO Phil

 

[71RCKCRZR RYAN]

i know my machinist buddy is always talking about cutting threads........

maybe so you can cut the threads loose or tight...i think thats what he calls it.????

different clearance for different application

 

[goldenarrow]

i know my machinist buddy is always talking about cutting threads........

maybe so you can cut the threads loose or tight...i think thats what he calls it.????

different clearance for different application

yep make it tite if you dont want the nut moveing make it loose if you want it to ba ajustable without a wrench.

 

[m016324]

Everything above is true but the another reason is that when bolts are made at the factory the die used can be either larger or smaller than other dies (within tolerance) thus you can have a bolt that might need to be clearance a little more for it to fit. And there are different fits from interference to a loose fit. So you can change the size if you make a bolt and the nut doesn't fit on you can bring it down some to fit.

-ben

 

[Blackjack]

It also allows you to adjust the die as it wears.