Michael, Larry, 1- BMS: Boeing Material Specification 2- #8-120: Don't have this one in my personal file but probably is an application code. 3- Type: Not real sure but sounds like the style of fiberglass. Could be seven plies of style 7628 to yield a 0.062" laminate. Various other ways to make an 0.062 board also. 4- Class: If this is similar to BMS-9-3M, this designates the organic coupler on the fiberglass used to improve resin wet out, improve moisture resistance, etc. 5- Specification Source: The Boeing Company Specification Unit Mail Stop 73-43 Orgn B-504B 206-234-2897 Might try Boeing.com also. 6- Laminate Source: Any of the IPC members who prepreg and laminate for HPL applications. Tom Palmer Technical Service Hexcel Schwebel 704-878-8324 -----Original Message----- From: Larry Campbell [SMTP:[log in to unmask]] Sent: Friday, February 12, 1999 6:40 PM To: [log in to unmask] Subject: [TN] Material Specification -Reply It's GFN. Mil-P-13949/4 or the new IPC-4101/2. The BMS I can't even guess at. Larry Campbell BFGoodrich, Avionics Systems >>> Mike Zagami <[log in to unmask]> 02/12/99 03:45pm >>> I have a spec that call for the following material: .062 flame retardent glass epoxy board, copper-clad on one or two sides as required. Mil-P-13949, type 6FN (or BMS 8-120, Type 1, class 4, Grade A) I cannot find info on the "6FN" material. The closest I could find was "GFN". Is there such a material as 6FN. And also what is the "BMS" spec? Thanks, -- Michael Zagami Electrical Engineer Fairchild Controls Corp. 301-228-3469 (voice) 301-682-6885 (fax) ################################################################ 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 ################################################################ ################################################################ 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 ################################################################ ################################################################ 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 ################################################################