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Old 11th Feb 2020, 7:13 pm   #1
astral highway
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Default What are these screws with an integral starburst ?

I found a SMPS case in the street and would like to clean it up and use it in a larger proejct . Id like to use these screws ...


(See photo ) but need a name for them generically ... the biting side has a starburst effect which clamps the surface better

The second one is a close up of the case . Both are enlarged, theyre probably M2.5 or M3 self-tapping; its the starry aspect that Im trying to define
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Old 11th Feb 2020, 7:29 pm   #2
paulsherwin
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Default Re: What are these screws with an integral starburst ?

I don't know what they're called, but they seem to turn up a lot in generic computer hardware. I've got loads of scavenged ones if you want a few.
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Old 11th Feb 2020, 8:29 pm   #3
Bill Edwards
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Default Re: What are these screws with an integral starburst ?

That close up of the first screw looks like looking into a jet engine! As for a name, try Toothed Screws, or Toothed Hex Screws.
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Old 11th Feb 2020, 8:33 pm   #4
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Default Re: What are these screws with an integral starburst ?

Serrated washer head.

Lawrence.
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Old 11th Feb 2020, 9:00 pm   #5
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Default Re: What are these screws with an integral starburst ?

Quote:
Originally Posted by paulsherwin View Post
.. they seem to turn up a lot in generic computer hardware. I've got loads of scavenged ones if you want a few.
Yes please , Paul !

Sending DM

Thanks !
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Old 11th Feb 2020, 9:01 pm   #6
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Default Re: What are these screws with an integral starburst ?

Quote:
Originally Posted by Bill Edwards View Post
That close up of the first screw looks like looking into a jet engine!

Haha! Yes, it does ! Thanks
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Old 11th Feb 2020, 9:01 pm   #7
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Default Re: What are these screws with an integral starburst ?

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Originally Posted by ms660 View Post
Serrated washer head.
.
Neat. Thanks !
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Old 11th Feb 2020, 11:50 pm   #8
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Default Re: What are these screws with an integral starburst ?

Shakeproof screws I've heard them called.

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Old 12th Feb 2020, 9:02 am   #9
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Default Re: What are these screws with an integral starburst ?

Serrated flange screws or serrated flange head screws.

https://www.mcmaster.com/serrated-flange-screws

PMM
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Old 12th Feb 2020, 11:07 am   #10
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Default Re: What are these screws with an integral starburst ?

The profile of the serrations seems to be a 'sawtooth'.

I imagine this would be an advantage in a shake-proof screw.
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