MilSpec is MilSpec - if US military or NASA request a product that’s MilSpec, unless that MilSpec for a particular item has been updated and approved. The MilSpec’s should remain the same.
A few companies providing MilSpec services as your 1970s ticket specifies. The following, unless updated for those pins, could be as follows.
Type I = 99.0% pure Type II = 99.7% pure Type III = 99.9% pure
Thickness - Grade
00 = 20microinches or .00002” 0 = 30microinches or .00003” 1 = 50microinches or .00005” 2 = 100microinches or .00010” 3 = 200microinches or .00020” 4 = 300microinches or .00030” 5 = 500microinches or .00050” 6 = 1500microinches or .00150”
Understand, this would not apply to your generic gold you see in PCs, laptops, cellphones, electronic games etc. The gold found on most modern electronics today is much much thinner than what’s listed for Grade 00 above.
Only what has been specified by US Gov’t contracts, NASA etc. for MilSpec get those grades. If they’re even relevant today.
And I haven’t even bothered to look up if that MilSpec has been superseded, changed or upgraded.
And notice I used used words like could or should. This is just an example of what one might have in their possession.
Hope you get a decent price for your pins no matter which route you go.
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