We tried to buy some screws from Mcmaster webiste, however they told us they will not sell to overseas directly.
Maybe you could consider 3D printing, it has fast delivery for your test.
How is your project ?
Produce with 3D model and note the required tolerance in PDF print.
As Chinese manufacturer, we also sell on alibaba. Personally, I think you may you target price, delete the highest and lowest quotations. And try...
I don't know how to help you, but maybe you could try automotive tuning industry.
Usually we take DWG and DXF files.
We'd like to help you, can you send drawings ?
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