Entropy Posted September 17, 2007 Report Share Posted September 17, 2007 I'm trying to find a bolt to fit a thread in piece of equipment. I used my neighbour's tap and die set and found that the one that worked was 12 NC 24. What size of bolt is this?? Help? Entropy Link to comment Share on other sites More sharing options...
Roy Posted September 17, 2007 Report Share Posted September 17, 2007 Check with one of our tool and die guys but I'd say 11/64ths. Link to comment Share on other sites More sharing options...
Whopper Posted September 17, 2007 Report Share Posted September 17, 2007 Roy is correct on the dia of the hole size. First number you gave is the bolt size (#12) and the second is the # of threads per inch I believe Link to comment Share on other sites More sharing options...
Uncle Buck Posted September 17, 2007 Report Share Posted September 17, 2007 12-24 is a real oddball i've been doing tool and die for almost 15 years, and never heard/seen one... i had to check the machinery handbook to see if it exists... 10-24 is a standard screw, readily available... If you're looking for the 12-24... try brafasco, Fabory, Fastenal, Bolt and Nut Supply... Good Luck Link to comment Share on other sites More sharing options...
Entropy Posted September 17, 2007 Author Report Share Posted September 17, 2007 Thanks guys! Link to comment Share on other sites More sharing options...
blaque Posted September 17, 2007 Report Share Posted September 17, 2007 Hopefully its legible, but heres some info on that, 12-24 NC.........12 is the diameter-24 is the threads per inch, and the NC is a course thread (as opposed to NF which is fine thread) Link to comment Share on other sites More sharing options...
BITEME Posted September 17, 2007 Report Share Posted September 17, 2007 12-24NC 12 is the bolt, 24 is the thread, nc is is coarse you will need a #16 drill, decimal equivalent ,.1770 probable hole size .1805, 66%of thread. a 3/8 drill will work all bolts can be found at brafasco, fastenal or other similar place Link to comment Share on other sites More sharing options...
POLLIWOGG Posted September 17, 2007 Report Share Posted September 17, 2007 You got a tap and die set right in front of you, make it. Its a metric bolt so if you have a SAE bolt thats not threaded all the way and is long enough and right diameter cut the threads off and make your bolt. Link to comment Share on other sites More sharing options...
Entropy Posted September 17, 2007 Author Report Share Posted September 17, 2007 I would make it but my neighbours 'set' is not a full set. lol I'll head to Canadian Tire after work. Link to comment Share on other sites More sharing options...
dwc67 Posted September 17, 2007 Report Share Posted September 17, 2007 (edited) you may not be able to get it in a hex head bolt but you will be able to get it in a machine screw with a robinson or philips head. skip canadian tire and go to home depot. machine screws are not that strong (gr2) you might want to redrill and tap to 1/4 and use a grade 8 bolt if it's something important Edited September 17, 2007 by dwc67 Link to comment Share on other sites More sharing options...
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