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.
Doug Rupert Could somebody well versed in the secrets of the Imperial system tell me: 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? Serge VIDAL -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.362 / Virus Database: 267.13.11/191 - Release Date: 12/2/2005
