>>1 - When a thread size is expressed at, say, 10-32, what do the "10" and >>the "32" stand for?
>>2 - The AN system starts at AN3, which is 10-32. What would be the next >>smaller size in the standard Imperial system? >10 refers to the size, probably 10 gauge and 32 refers to threads per inch. >Question 2 probably 12-32 which would be a machine screw not AN. I don't know what the numbering system for screws was based on, but as stated, #10 is equivalent to 3/16". The next smaller size is #8 at @ 0.16". #12 is larger, I "think" equivalent to 1/4" Allen G. Wiesner KR-2SS/TD S/N 1118 65 Franklin Street Ansonia, CT 06401-1240 (203) 732-0508 flash...@usadatanet.net