What's the dimension definition of RBC on the drawing, What does "NC" mean on #10-24 NC on the drawing?
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Posted by: hzfrank2000 ® 08/23/2006, 12:32:38 Author Profile eMail author Edit

Hello, I need an urgent help on the drawing. What does dimension RBC 1-5/8" on the drawing? What is RBC? TAP #10-24 NC 1/8" DEEP---What does "NC" mean? Hope somebody can answer my questions today, thanks much!!!

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Re: What's the dimension definition of RBC on the drawing, What does "NC" mean on #10-24 NC on the drawing?
Re: What's the dimension definition of RBC on the drawing, What does "NC" mean on #10-24 NC on the drawing? -- hzfrank2000	Post Reply	Top of thread	Forum

Posted by: lbmakem ® 08/23/2006, 13:45:10 Author Profile eMail author Edit

'NC' means National Coarse, and relates to the coarsness of the thread

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Re: Re: What's the dimension definition of RBC on the drawing, What does "NC" mean on #10-24 NC on the drawing?
Re: Re: What's the dimension definition of RBC on the drawing, What does "NC" mean on #10-24 NC on the drawing? -- lbmakem	Post Reply	Top of thread	Forum

Posted by: Scooter ® 08/23/2006, 16:07:21 Author Profile eMail author Edit

generally, national coarse is refered to as UNC, U meaning Unified, as in British & Canadian Standards for bolts & screws. Some draftsmen use short cuts & abv's designed for their own companys use, & they can be difficult for others to read. kind of like my spelling------

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Re: What's the dimension definition of RBC on the drawing, What does "NC" mean on #10-24 NC on the drawing?
Re: What's the dimension definition of RBC on the drawing, What does "NC" mean on #10-24 NC on the drawing? -- hzfrank2000	Post Reply	Top of thread	Forum

Posted by: Scooter ® 08/23/2006, 13:41:14 Author Profile eMail author Edit

Here is my Shot at it: NC, Means "Numerical Control" ie, The #10 tap is to be Numerically controled to 1/8" deep. RBC, Raidus of Bolt Circle. Hope this helps. P.S. You can find a welth of info. in the "Machinery's Hand Book" regarding this and other data. Thanks, Scooter

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Thanks!
Re: Re: What's the dimension definition of RBC on the drawing, What does "NC" mean on #10-24 NC on the drawing? -- Scooter	Post Reply	Top of thread	Forum

Posted by: hzfrank2000 ® 08/24/2006, 03:19:41 Author Profile eMail author Edit

Thanks lbmakem and scooter, your answers help me much!

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Re: Thanks!
Re: Thanks! -- hzfrank2000	Post Reply	Top of thread	Forum

Posted by: Zip ® 09/02/2006, 00:03:35 Author Profile eMail author Edit

National Coarse Zip

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