I just wanted to find information for an M2 flat head hex socket machine screw which, I believe, is defined by ISO 10642, but unfortunately that is locked behind a paywall of a couple hundred dollars. Unless an individual has money to throw around, that information is out of their grasp, and that doesn't seem entirely fair to me. So I was just wondering the reasoning behind why its chosen to make that sort of general information a closed standard.

  • $\begingroup$ Paid for as people don't work for free... $\endgroup$
    – Solar Mike
    Commented May 24, 2022 at 8:48
  • $\begingroup$ Actually ASTM committee members are paid by employers , not ASTM. But as an organizer/manager/publisher , etc, ASTM does charge for standards to cover costs. API and ASME are the same. $\endgroup$ Commented May 24, 2022 at 15:19
  • $\begingroup$ So, from the organizations' perspective, all specifications and standards are produce by volunteers. $\endgroup$ Commented May 24, 2022 at 15:27
  • $\begingroup$ Some irony; the people who write the standards must also buy them from the organization. Except API does give speciations to the committee members. $\endgroup$ Commented May 24, 2022 at 18:29
  • $\begingroup$ A couple hundred dollars is peanuts for any serious user of this information. It is definitely unfortunate that DIYers can't pay a DIY-appropriate price for standards. It's a failure of our economic system that applies in lots of cases (e.g. students pirating software) $\endgroup$ Commented May 28, 2022 at 17:49

1 Answer 1


A google search brings this page with useful charts, and data.

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ISO 10642


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