Electronics > Mechanical & Automation Engineering
Screws meant for plastic.
Alex Eisenhut:
I'd like to buy an assortment of small-ish Plastite-style thread forming or thread rolling (I don't know what the difference is but I want specifically screws for plastic)
I've attached a picture of a screw used to hold a PCB to the front panel of a Commodore 1571 drive. It seems to be a 5/16" 2-28 Trilobular.
https://www.amazon.ca/gp/product/B00GDXU4WM/ref=ox_sc_act_image_1?smid=A3DWYIK6Y9EEQB&psc=1
but I don't want a 100 of one type, I'd be happy with 10 or 20 and with many other sizes. :-//
I'm a bit surprised that I can find screws for pretty much everything else, but not for screwing into plastic. You'd think with all the 3D printing *someone* would need plastite screws at some point...
TimFox:
Here's McMaster Carr's collection of screws for plastic:
https://www.mcmaster.com/products/screws/tapping-screws~/
Go to almost the bottom of the page for the plastic-use screws.
jfiresto:
Here is perhaps a little, useful reading material.
edpalmer42:
--- Quote from: TimFox on December 22, 2024, 09:53:08 pm ---Here's McMaster Carr's collection of screws for plastic:
https://www.mcmaster.com/products/screws/tapping-screws~/
Go to almost the bottom of the page for the plastic-use screws.
--- End quote ---
Keep in mind that if you're outside the U.S., McMaster Carr doesn't sell to hobbyists or individuals, only to businesses.
"In addition, if you are located outside the United States, you represent and warrant to us that the Products are being purchased only for professional or commercial use, and not for personal or household use."
They also say that Australia & New Zealand customers must state that they have a National Business Number and GST Registration.
I can't find it now, but at one time they stated that they wouldn't ship to Canadian residential addresses. Period.
Ed
Conrad Hoffman:
I think anybody's money is good at Misumi. You might find what you want under their micro-screw category, though it won't say made for plastic. If you look at them, they're about what you need. I think some are tri-lobe, which is common for plastics. The site is huge so I may have missed something. The only problem is you'll end up buying more than you probably want, but they tend to be inexpensive. You probably won't find anybody willing to get up in the morning to sell 20 screws.
https://us.misumi-ec.com/
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