Indeed, we found the same thing with the PC104 specific .600" spacers.
However, .625" (perfect 5/8") spacers are industry standard and are
20 cents a piece. We get them from Tower Fasteners
http://www.towerfast.com/
.025" error means your pins set .025" from perfect engagement, but
this doesn't really effect anything since the pins are already so
long. Spending another $4 in the design for an extra 0.025" of pin
engagement is hardly worth it.
//Jesse Off
--- In "Chris Heismann" <> wrote:
>
> This isn't really a technical question, but does involve the TS7250,
so it
> was suggested I ask here. Our electrical engineer's are designing a
product
> that includes a TS7250, a TSISO485 and maybe one or two other
boards. I've
> been tasked with specifying the case and hardware requirements and
sources,
> and then designing the case.
>
> In looking for the hardware to put together the stack, I'm finding
that the
> PC104 consortium's recommendedspacers, the 4-40 M/F .600 inch long
spacer is
> non-standard, and rather expensive, at least when looking at the RAF
> 4000-440-N MOD L=.600 part number I found on the PC104.org website.
At a
> $1.35 each from one of my current suppliers, having to have 12 or 16 of
> these in a stack can add significant cost.
>
> What do you all do for your stacks? Is there alternative
manufacturer's of
> these spacers? Can something more standard be used with a washer or
> something? Can anyone recommend a cheaper source for these spacers?
>
> Any help appreciated.
>
> Thanks,
> Chris Heismann
>
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