What are these self tapping screws called that form "real" threads?
On Thu, 25 Jun 2015 15:37:07 +0800, Techman
wrote:
I'm looking for some screws for use in production work.
*Sick of tapping lots of M4 and M4 holes.
*Used for attaching small brackets and DIN rail etc.
*Fixing to to mild steel 3mm thick or to 1.6mm thick Zinc Anneal sheet.
I've seen screws like in the links below but am having trouble finding
them. When I look for self tapping screws I find the coarse thread type
rather than the defined M4x0.7 or M5x0.8 threads.
Is there a proper name for these screws:
https://dl.dropboxusercontent.com/u/92240200/Tapping%20Screw%20(1).JPG
https://dl.dropboxusercontent.com/u/92240200/Tapping%20Screw%20(2).JPG
Thanks.
They are called thread forming screws.
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