What is the diffrence between a Thread forming screw use on plastic and metal ? I can't tell them apart . Can anyone , please enlighten me ?
Thanks in advance
What type of screw ?
Jun 03, 2011
3 Replies
Some thread-forming screws are appropriate for use on either plastic or metal, depending on the specifics of the application.
*Generally* sheet metal screws are "pointy" and fasteners intended for plastic are blunt-nosed with a cutting notch on the end but there are many variations.
Rich Webb Norfolk, VA
"Rich Webb"
** Often thread forming screws for plastic are " twin tread " too.A real time & motion expert's favourite.....
.... Phil
screws for plastic have a notch at the tip and a blunt tip. screws for sheetmetal have a point or a triangular cross-section screws for thicker steel (over 1mm) have the notch too but are made of hard steel.
there's a bunch of other thread-forming screws too (like for brick, and self-drilling for steel sheet )
?? 100% natural
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