Simple hardware question

[Jchung]

Hello all, I am looking to order some screws and nuts for my project. Do these go together fine?:bang

M3 Countersink Washer
3mm Alu. Light Weight Lock Nut
3x10mm Titan. Flat Head Screws

Thanks!

 

[william g]

yes they should all fit nicely

remember, that washer will eat up some length, so you might want to add a few mm to the length.

 

[Jchung]

Thanks Will! There is one more question though, for the screw length, is it from end to end? or after the narrow part and down?

 

[TNT_Pulling]

On a flat head screw the length is measured as the whole screw length. On button head and socket head screws thier length is measured from under the head. I hope this helps.

 

[Jchung]

Ahhh thank you very much TNT! That definitely helped with my measurements now.:tmb

 

[William]

Yup, flat heads are a bit different that way.

 

[Jchung]

After some measurements, I think I will go with the 15mm countersunk screws. Another question I have now is, what is the difference between the following two types of screws? What does the "ST" means?

*Yeah Racing (#BF315) 3x15mm Titan. Flat Head Screws

*Yeah Racing (#BF315T) 3x15mm Titan. ST. Flat Head Screws

And will both fit these locknuts fine?

*Xpress (#968-174) 3mm Alu. Light Weight Lock Nut (PP)

 

[William]

st = self tapping, the kind you screw into plastic.

you need the first ones to thread into a nut, they have machine threads

 

[Jchung]

Ohhh ok I see now, thanks for the quick reply!:tmb

 

[william g]

just glad to help