We are using a phosphor bronze leaf spring mounted on a PCB to contact to a dome nut on a sensor. We currently have two options for material on the dome nut - stainless steel of mild steel with a zinc plate. My question is, which of these would be best and are these materials suitable at all? Help! Neil Atkinson Quality Manager Stadium Electronic Controls Tel: 01429 266544 ############################################################## TechNet Mail List 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 web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################