Leadscrew

A leadscrew is also sometimes called a translation screw. Examples are square thread forms and Acme thread forms. They are used when a high degree of precision is required. Like previously stated they are commonly found on lathes and such like.

There is plenty of information on Acme and stub acme thread forms on the web and if you can find a bench vice there will more than likely be an Acme threaded rod which "translates" the rotational movement to linear movement.

Now I understand about the LEAD screw as use at machines.

We call here TORNILLO PATRON using PATRON the same as in METRO PATRON.

Or used as reference.

Beside it , where I can find data about this screw ?

UNS 0.1500 50 2A

It is used to fix the grips in a handgun.

Unified National Special, 0.1500 inch diameter, 50 threads per inch, 2A class of fit.

Hi Tornado , thanks

Where I can find more data ??

Any edition of Machinery's Handbook gives lots of information about screw threads.

Tornado , maybe you did not notice where I live

Córdoba Argentina

I have no acces to thata book in paper.

Maybe I can find some in internet

This book is available from Amazon.com, in several editions, some new and some used. The most recent edition is the 29th; for your purposes a used copy of say the 27th would be less expensive.

It is a very useful reference, as are the Marks manuals on engineering.

amazon will ship worldwide i think

You don't even need to spend money. Type it into google and you get loads of stuff.

For those interested in ACME threads for "translation" and Plastic Tooling stories - we had a discussion on "ACME threads and Diamond Dust" at "Skippy and Buzz" -

http://skippyandbuzz.blogspot.com/2010/04/of-acme-threads-and-diamond-dust.html

Good Luck -

Jim