Talk:Unified Thread Standard

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Contents 1 Switch 2 Colloquial name? 3 D versus D1 in diagram 4 Vectorizing diagram

[edit] Switch

Unifed Thread Standard is not going away. It won't go away intill the US switches totaly over to metrics. Even after that it will be another 50 to 75 years untill UTS bolts and taps are stoped being produced. ISO and UTS are not interchangeable due to the smaller id on the minior dimater on the internal threads. This means that as long as there are machines in the world that are old we will still be using UTS. The 50 to 75 years for thoes machines to come totaly out of service.

- ctempleton3

In other words its a matter of time, but a long time? Hyacinth 18:11, 8 Mar 2005 (UTC)

[edit] Colloquial name?

How do you call these threads colloquially? An ISO metric thread is called 'metric', but how do you call non-metric threads? -- Hokanomono ✉ 15:57, 2 May 2007 (UTC)

"Imperial," "English" or "inch." Or they are just referred to directly such as: "quarter-twenty" or “ten-thirty two.”--gargoyle888 19:46, 2 May 2007 (UTC)

[edit] D versus D₁ in diagram

I wonder why D and D₁ in the diagram on this article are swapped compared to the otherwise (except for insignificant artistic details) identical diagram on the ISO metric screw thread article. I had thought, in both screw threads, the major diameter is the nominal diameter D, i.e. the one after which the thread is named. It would make more sense to me if D were the nominal diameter in both diagrams. Is this just a typo on Unified_Thread_Diagram.gif? I would have thought, the exact same diagram can be used to explain the Unified Thread Standard and ISO metric screw thread, and that both differ merely in their choices of major diameter and pitch values. Anyone here who has the UTS standard at hand to check? Markus Kuhn (talk) 20:36, 4 January 2008 (UTC)

[edit] Vectorizing diagram

Image improvement request: WP:GL/IMPROVE#Screw_thread_profile Markus Kuhn (talk) 20:41, 4 January 2008 (UTC)