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Slotted support brackets for long cards in IBM 5150 etc

Taffer

Taffer

Experienced Member
Joined
Jun 24, 2019
Messages
52
Location
Buffalo, NY
Does anyone know the proper name for the slotted brackets that sit at the back end of long cards?
Is there a replacement or 3D model that can be printed?

I picked up two 5161 expansion units and these are not populated. I'd like to install some long cards in them.
Would cards have come with these brackets when purchased new back in the day, or were they sold separately by IBM?

Thanks.

Screenshot 2024-05-01 111033.png
 
The original part is Unitrack SPC 3000, but they seem to be hard to find and expensive when you do.

It looks like Keystone 8622 would fit the mounting holes and properly support long ISA cards, but the design and color are different, so if you’re trying to make it accurate to the original, you’ll need the Unitrack parts. Bivar N-350-2 is similar to the Keystone part, just from a different manufacturer. Both the Bivar ($0.60 currently) and Keystone ($1.14) parts are available on DigiKey.
 
At least in the Keystone area, the "vertical" guides tend to be bottom-mounting, like the card guides on an Altair 8800. The ones used in a 5150 are really "horizontal" guides. I still have a pile of them.
 
They may not be exactly like the originals, but I modeled some replacements for my XT some time ago and they work pretty well
 

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