STANDARD NOTES FOR HOLES
STANDARD NOTES FOR HOLES
(OP)
Can someone give me some examples of Standard through hole call-outs.
I use GD&T on most call-outs.
Usually a true position.
Here is a Typical dimension on a 4 hole pattern.
ø.500±.006
THRU HOLE
4X
Is "4X" standard? or is "4 HOLES"?
Is "THRU HOLE" standard? I always add it to clarify.
I know each company has general standards, my particular one doesn't, I am supposed to define them.
I use GD&T on most call-outs.
Usually a true position.
Here is a Typical dimension on a 4 hole pattern.
ø.500±.006
THRU HOLE
4X
Is "4X" standard? or is "4 HOLES"?
Is "THRU HOLE" standard? I always add it to clarify.
I know each company has general standards, my particular one doesn't, I am supposed to define them.





RE: STANDARD NOTES FOR HOLES
4X ø.500±.006
I always add THRU for clarity.
Steve Smith, C.I.D.
Product Engineer
Staco Energy Products Co.
www.stacoenergy.com
RE: STANDARD NOTES FOR HOLES
4x Ø.500
the tolerance alters the dimesion value, so it becomes
4x Ø.500±.006
I've always included " - THRU" but I don't believe that this is part of the spec...someone clarify for both of us please?
Of course ISO does it all differently...
Alex
RE: STANDARD NOTES FOR HOLES
If you have an "I" beam and you want to cut a hole in the top surface, but not the bottom surface.
I would normally add
"THRU ONE SURFACE ONYLY"
Is there a standard for this also?
RE: STANDARD NOTES FOR HOLES
RE: STANDARD NOTES FOR HOLES
Metric standards try to avoid descriptions like "Thru",
not everybody who will work with the drawing will speak the language of the drafter. The section view with dimension should show how deep the hole is, or if it is thru.
regards
gearguru
RE: STANDARD NOTES FOR HOLES