Re: fastener thread pitch choice

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "dcassyc1" <denisc1@...> wrote:

>
> Hi Everyone,
> are fine thread 10-32 screws better than 10-24 screws for fasteneing step motors on to aluminum machine frame or aluminum gearheads? Can the 10-32 screw be torqued to the same value as a 10-24 thread? Will the screws hold the joint together as tightly? If a steel screw threads into an aluminum thread should the threads be coated with an anti sieze compound? I hope everyone has a great summer.
> thanks,
> Denis
>

The choice between fine thraed and standart Screws first depends on the material to be threaded into.
Fine thread is used on harder Metals where stripping out is less likely.
Also the purpose, is this a application that will be screwed in and out repeadedly durring its lifetime then a standard thread will hold up better.
For a Motor Mount in Aluminum the finethread will not last very long, the standard screw would be the better choice.
If the threads stripp out you could just simply install Keenserts on all
threads and have a lasting steel thread to work with.
Good Luck