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THRU, THRU ALL and Continuous Feature | Eng-Tips THRU - I'd say necessary when it's not otherwise obivious that the cut hole goes thru the entire part I'm perhaps a bit generous in my use but having been the idiot searching a drawing for the hole depth only to finally realize it was a thru hole I use it a lot So even if I have a top and bottom view of a part which hence shows both sides of the hole I still tend to add THRU, even though
hole thru into section - correct drawing note? | Eng-Tips Hi If I have a plate and with a hole through the plate, I put on the drawing 'M6 THRU' That's clear But, if I have a box section and I want the hole to just go through the wall of the box section, what is the standard notation? I've previously stated 'M6 THRU SECTION WALL', but that sounds a
How to Annotate Holes Passing Through One Surface of a Part Also as the hole goes thru second wall it becomes “2 HOLES” This two techniques together will give bullet-proof hole designation, but also could be used separately Grumpy old drafter in me reminds that back in time we used to create a section thru every semi-important hole using only paper and pencil and no-one died
Thru hole dimensioning in deep part | Eng-Tips The hole pattern dimensioning uses no control boxes, neither does it have any requirement for perpendicularity, celindricity, parrellism, etc All that is shown is the distance to the first hole from the part edges and the center-to-center location for the hole pattern The part was manufactured by a outside shop
Is THRU actually required? | Eng-Tips Is it actually required to put a "THRU" or "THRU ALL" on a through-hole? ASME Y14 5 (2009) specifies: "Where it is not clear that a hole goes through, the notation THRU follows a dimension " Any other cut-out geometry is by default assumed to go all the way through a part body if no depth or end condition is defined
List of acceptable THRU callouts | Eng-Tips Hi all, At my place of work we're having a discussion over whether "THRU TO CENTER" is a valid common callout I have seen "THRU", "THRU ALL", and "THRU TO BORE" but I am wondering if there is a generally agreed upon list of variations of THRU that would be generally understandable across
Hole Callouts Reference Dims | Eng-Tips Hole Callout Square tube with a hole going through the entire part (both walls) The hole(s) are being located using a positional tolerance and basic dimensions In this example, is best practice to call out the hole as one thru hole or two holes? We've always called this out as one hole
How does Y14. 5 call out through holes | Eng-Tips Explicitly saying 'Thru' makes no difference on your tolerances etc It's just to clarrify that the hole goes all the way through, especially when it wouldn't otherwise be obvious The hole should be 375 +- 010 all the way through
GD T Thru hole callout | Eng-Tips In this case all tolerances (the size tolerance and any positional tolerance) apply over the depth of the hole (which of course is the same as the plate thickness for thru-holes) If the hole diameter is out-of-spec anywhere through the thickness then it doesn't meet the drawing