Greg, We use counter sunk holes for both screws and rivets with no problems. We do not plate them, just bare laminate. Don't know of any IPC references though. Hope that helps a little. Ken Bloomquist Sr. Principal Process Engineer PRIMEX Aerospace Company P.O. Box 97009 Redmond, WA 98073-9709 www.primextech.com Ph: 425-885-5000 FAX: 425-882-5786 [log in to unmask] Northcon/98, Show Director <www.northcon.org> Electronics Manufacturers Association (EMA), Secretary <www.ema-wa.org> ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################