A pemnut fastener is a nut that is pressed into sheet metal or pc board.
A screw can then be used to hold the board or an I/O module or whatever.

PEM BRAND is a trademark name. 
Contact the following for a catalog:

Penn Engineering & Manufacturing Corp.
Danboro, Pennsylvania 18916-1000 USA
FAX: +1.215.766.0143
Phone: +1.215.766.8853
Sales Direct: +1.800.DIAL-PEM (USA ONLY)

PEM also makes press fit standoffs and SNAP-TOP standoffs
that require no screws.

They have a line specifically for PC Boards. (Bulletin K-1191 and 
Bulletin KP-693)  The KP line is for plated thru-holes in multi-layer pcb's.

Have a happy day!

---------------------------
John Laur
Rockwell Automation
Allen-Bradley Co Inc.                 
1201 South Second Street
Milwaukee, WI 53204
+1 414 382 2162 (fax)
+1 414 382 2393 (phone)

[log in to unmask]
---------------------------

> From [log in to unmask] Wed Jul 17 21:44:02 1996
> Resent-Date: Wed, 17 Jul 1996 21:37:04 -0700
> Old-Return-Path: <[log in to unmask]>
> X-Sender: [log in to unmask]
> To: [log in to unmask]
> From: [log in to unmask] (D. Rooke)
> Subject: Re: DES/FAB: PEMNUT FASTENERS IN FR4 FIBERGLASS
> Resent-From: [log in to unmask]
> 
> I am resending this E-mail since I believe it failed to be posted originally...
> 
> 
> 
> Not being in the assembly arena... what in the world is a pemnut fastner???
> 
> RSVP
> Dave Rooke
> [log in to unmask]
> _____________________
> >>We have a member who has submitted the following inquiry. Any information 
> >>is greatly appreciated:
> >>
> >> "I would like to get any information that you have to offer concerning 
> >>broach type pemnut fasteners in FR4 material. Normally in our designs we 
> >>try not to use pemnuts in multilayer boards because of the damage they 
> >>can do to internal layers. We have a recent design that does use pemnuts 
> >>and would like to know of any concerns there might be, especially any 
> >>spacing requirement in internal layers.
> >>
> >> "I would appreciate any adive you can give me on this concern."
> D. Rooke
> ([log in to unmask])
> 
> ***************************************************************************
> * TechNet mail list is provided as a service by IPC using SmartList v3.05 *
> ***************************************************************************
> * To unsubscribe from this list at any time, send a message to:           *
> * [log in to unmask] with <subject: unsubscribe> and no text.        *
> ***************************************************************************
> 
> 

***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To unsubscribe from this list at any time, send a message to:           *
* [log in to unmask] with <subject: unsubscribe> and no text.        *
***************************************************************************