Hi Gary - what is the use environment conditions? Also, zinc coatings have a potential for zinc whisker formation. Dave Hillman Rockwell Collins [log in to unmask] Gary Camac <[log in to unmask]> Sent by: TechNet <[log in to unmask]> 04/23/2009 08:09 AM Please respond to TechNet E-Mail Forum <[log in to unmask]>; Please respond to Gary Camac <[log in to unmask]> To [log in to unmask] cc Subject [TN] Plating on screws Which finish would provide better corrosion resistance - Zinc (clear or chromate) or Black phosphate? TIA Gary Camac Senior Manufacturing Engineer DICKEY-john Corp. 5200 Dickey John Road Auburn, IL 62616-0010 Telephone 217-438-2288 [log in to unmask] --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------