DEC H-500 Computer Lab pins and docs (was Re: Straight 8 up on Ebay just now)

Karl-Wilhelm Wacker kwwacker at
Tue Jul 19 19:21:48 CDT 2016

This company does custom tapered pins in brass -
There are others out there I'm sure.

I would find out what their minimum is and get a bulk order together.

 A place I worked for in the past had do a custon part for 
in the 100's - I would talk to them about a part also.


----- Original Message ----- 
From: "Vincent Slyngstad" <v.slyngstad at>
To: "General Discussion: On-Topic and Off-Topic Posts" 
<cctalk at>
Sent: Tuesday, July 19, 2016 6:43 PM
Subject: Re: DEC H-500 Computer Lab pins and docs (was Re: Straight 8 up on 
Ebay just now)

> From: Karl-Wilhelm Wacker: Tuesday, July 19, 2016 9:25 AM
>> Does anyone have one of the patch cables, and can they measure the 
>> diameter of the pin and it's length?
> The width goes from about .093" near the tip to 0.1" near the crimp.  The 
> length of the tapered region is about 0.32".  The rounded tip has a radius 
> of .046" or so, and the crimp area is about .28" long, accommodating the 
> stranded hook-up wire and insulation.  The wire extends beyond the crimp 
> into the tapered section, but I can't see in there to determine if it is 
> soldered or what.
>> Also, is it a straight pin or like a bannana jack with springy sides?
> Miniature banana jacks (not the regular ones) actually fit the holes OK, 
> but are horribly expensive, and also wear on the soft brass holes.
> I've bought some of the stackable jumpers, and used them in a pinch, but 
> it isn't that great of a solution.  (It was actually on H901 lab panels, 
> which have similar brass grommets.)
>    Vince 

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