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Recent Bios FAQ

270385 John Ruth <johnrruth@h...> 2020‑04‑05 Re: appeal to MFia (Millers falls illuminati agregate
Eric,

If the thread actually *is* 10-30 UNS, count yourself lucky.

NS means the threads are of the National Standard form, and not some oddball
like Stanley Rolled Threads, Whitworth 55-degree, Sharp Vee, or BA.

https://www.victornet.com/detail/RD-10-30-B.html

https://www.victornet.com/subdepartments/Special-Pitch-Taps-up-
to-1/2-inch/1260.html">https://www.victornet.com/subdepartments/Special-Pitch-
Taps-up-to-1/2-inch/1260.html

John Ruth
“Of threads and threading systems, there is no end!” ( (Tm)John Ruth )
Sent from my iPhone

On Apr 4, 2020, at 8:32 PM, Eric Coyle mailto:ecoyle@t...>> wrote:

One of my boredom projects is to fabricate a side for a Millers falls #7
skew rabbet block plane.



Original side plate is missing, and so ae the screws that held it on.



Does anyone have one? And could they measure the TPI of the screws which
hold the rods in place? I THINK I have them scoped out at a #10-with a 30
TPI thread count.  This is referred to as a UNS (the S being for special). A
normal 10-32 thread plug goes into the hole about ¾ of the way, and I guess
I could force it, but better to get the right thread, then find a bolt to
fit (next issue to be solved)



10-30 is NOT a common size any longer



Neighbourhood master-machinist has a 10-30 tap to help confirm, but there's
always a possibility that a previous owner has Frankenized the thread, so
I'm looking for a further confirmation before I mistakenly fankenize the
device further.



Please let me know if you can confirm. Thanks



Bored Eric

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