We define the hole size of .042 to .037 and do not have any problems pressing the compliant pins for military connectors and pins and also VME type connectors. Most connector specifications allow up to .043 but we have had problems with ES testing. Most board fabricators can work with a .005 inch hole size range. You may also want to check alignment of the press fixture and other setup parameters. Kevin Thorson Loral Defense Systems - Eagan ---------- From: TechNet-request To: TechNet Subject: Press-fit Connectors Date: Tuesday, January 23, 1996 11:01AM Hey Folks, Is anyone having problems with pins bending during the insertion of compliant press-fit connectors? In an effort to have a product which was 100% surface mount, we chose the compliant press-fit pin backplane connector so that wavesoldering would not be necessary. Since then, manufacturing had problems with pins bending during insertion, so we reverted to solder pins and wavesoldering. Now, to eliminate the wavesoldering process thereby saving time and money, the press-fit pin is being considered once again. If you've had any types of problems with press-fit connectors, what were they and how did you resolve them? Thanks in advance Mike Lacey Ascom Timeplex [log in to unmask] (201)930-9888 x5345