Fellow TechNetters: Please bear with me as I have followed this string of e-mail for some time and am not sure if a straight forward response was provided. II have reviewed IPC-2222 sec 9.2.2 and IPC-2221 sec 9.0. I still have no clue Is there a quick reference calculator that permits an individual to select and enter component lead dimensions, board thickness and receive a recommended plated/finish hole size and vice-a versa. As a lab analyst I can only provide destructive analysis measured dimensions and not nominal. Victor, --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------