Leader to minor or major dia on threaded features?
Leader to minor or major dia on threaded features?
(OP)
Question over in mech other forum about where the leader line should point to when calling out a thread. I looked in ASME Y 14.5 & 14.6 I didn't see it explicitly stated or even clearly shown in examples from a quick look.
thread404-342068: dimensioning to hidden line of internal thread major diameter
thread404-342068: dimensioning to hidden line of internal thread major diameter
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What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?





RE: Leader to minor or major dia on threaded features?
RE: Leader to minor or major dia on threaded features?
I'm not saying that is the correct way per any standard, but I assume it's done that way in case someone hides or disables the dashed circle.
RE: Leader to minor or major dia on threaded features?
But is there really a problem, or are we trying to make one up?
From “functional” and “unambiguous” point, what could possibly go wrong from leader touching the wrong circle? Given the resolution of the picture, could one even tell?
RE: Leader to minor or major dia on threaded features?
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Leader to minor or major dia on threaded features?
In Y14.5 you can even find figures where leader points to the center of threaded hole (fig. 7-21 & 7-22 in '09 or fig. 5-33 & 5-34 in '94), so none of thread characteristic diameters is directly indicated.
RE: Leader to minor or major dia on threaded features?
From your post I got an impression that you invited everybody over to this forum.