#00, 000, 0000 thread specs
#00, 000, 0000 thread specs
(OP)
A while back I posted thread1103-193600: Calling out #00 threads on drawing and never really got an answer (thread is closed now).
Well whilst searching for info on my lead screw post I came across:
http://ca talog.asme .org/Codes /PrintBook /B1863_200 3_Machine_ Screws.cfm
B18.6.3 - 2003 Machine Screws and Machine Screw Nuts - part of the description says: "...thread dimensions for the No. 0000, No. 000, and No. 00 sizes..."
Anyone familiar with this spec? If so would it be appropriate to use this a reference spec when putting 00 tapped holes etc on a drawing?
Well whilst searching for info on my lead screw post I came across:
http://ca
B18.6.3 - 2003 Machine Screws and Machine Screw Nuts - part of the description says: "...thread dimensions for the No. 0000, No. 000, and No. 00 sizes..."
Anyone familiar with this spec? If so would it be appropriate to use this a reference spec when putting 00 tapped holes etc on a drawing?
KENAT, probably the least qualified checker you'll ever meet...





RE: #00, 000, 0000 thread specs
Heckler![[americanflag] americanflag](https://www.tipmaster.com/images/americanflag.gif)
Sr. Mechanical Engineer
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This post contains no political overtones or undertones for that matter and in no way represents the poster's political agenda.
RE: #00, 000, 0000 thread specs
These are not UNM (Unified Miniature) threads.
They are a legacy of the American National thread form and should have generally been replaced by UNM but are still in use.
Someone gave me an extract of B18.6.3 since I posted and it does have the information with an opening paragraph saying:
So unless someone knows better for now I'll reference B18.6.3.
KENAT, probably the least qualified checker you'll ever meet...
RE: #00, 000, 0000 thread specs
Its statement of scope begins with:
I cannot find a Table V-1 in it.
There is a paragraph that states:
Table 19 provides some basic dimensions for the threads. Pitch, limits on major and pitch diameters and the nominal minor diameter (external) or major diameter (internal).
It does not fully define the thread form in the level of detail that B1.1 does
RE: #00, 000, 0000 thread specs
The extract I'm looking at is I believe appendix V. Table V1 gives the major, minor & pitch diamters with tolerances, sounds like similar to your table 19. It shows that they should be called out as "NS" for the series designation which was part of my original question in my original post.
I agree it doesn't fully define the form to the extent that B1.1 does but it's the best I've found in a current standard.
KENAT, probably the least qualified checker you'll ever meet...
RE: #00, 000, 0000 thread specs
The above from B18.6.3-2002
RE: #00, 000, 0000 thread specs
Still the best I've found so far though.
KENAT, probably the least qualified checker you'll ever meet...