On 10/26/2018 7:19 PM, Steve Malikoff via cctalk wrote:
William said
One the original PDP-8 ("Straight 8"), the front panel has two aluminum
strips on the sides, one on the left and one on the right. Each should have
a pair of flathead countersunk screws, likwly Phillips head.
Can someone tell me the exact specs, basically thread, length, head, and
material of the screws?
I have no idea what the straight eight screws are, but for comparison the sort
of screws in
the PDP-11/05 are things like #6-32 x 1/2 phillips pan head, #10-32 x 5/16
phillips head truss,
#8-32 x 3/8 phillips pan head nyloc, #2-56 x 1/2 phillips pan head, #4-40 x 3/8
phillips head
flat. And so on it goes.
I read somewhere DEC used a lot of stainless screws but that may not apply to
all of them.
Certainly the cheese head screws that the 11/15's 10-1/2" chassis pivots on are
stainless, I
checked that for curiosity's sake when I machined some special adapter washers
to use with
modern server slides.
At any rate, you have that wondrous (but US only) fastener supplier's website
to help you out.
Steve.
I have four straight-8 panels. All have flat head, stainless (at least
non-magnetic) screws. Three have Philips head screws
and one has slotted head screws. All are 0.38" total length with about
0.28" thread length. Looks to be an 82 degree
countersink.
Bob
--
Vintage computers and electronics
www.dvq.com
www.tekmuseum.com
www.decmuseum.org
