Does somebody know the screw thread size of the 1 inch screws that come with Kadee 830 couplers? I’d like to get a tap for that size instead of fighting to get the screw to cut the threads through plastic. Thanks in advance for any help given.
2-56. Tap drill will be a #50, though I use a #51 in softer material like plastic. Clearance drill #43
Later,
K
Now , this sort of post is what I was on about when I said "can we have a modelling tips " section , I don’t have ready reference to American screw sizes , and their appropriate tapping and clearance drills , so I have to take the "long hand " way and measure .
So , how’s about it , Bob , any chance in between your busy schedule of hosting and train operating ?
Mike M
Thanks, Kevin.
Can you explain your statement?
“Clearance drill #43”
(Showing my ignorance here)
Ric,
As I understand it, the clearance drill size is the bit needed to allow a screw to go thru a hole without touching at all. The tap drill size is the bit you use for the hole you will be putting the tap into.
Taps seem pretty straight forward to find the rihgt information, but I’ve yet to see some table that lists the rod sizes for my dies.
Mike Morgan said:Mike, I admit to some confusion here. You don't have reference to "American" screw sizes??? We took our screw sizes from you Brits. Wha' happened? You guys take a wrong turn somewhere?
Now , this sort of post is what I was on about when I said "can we have a modelling tips " section , I don't have ready reference to American screw sizes , and their appropriate tapping and clearance drills , so I have to take the "long hand " way and measure .
Steven ,
The sizes 8-32 etc , mean little to me .
I was dragged up on BSF (British Standard Fine )
Whitworth sometimes referred to as BSW
BA
UNC
UNF
and latterly , Metric . We stupidly joined the European Disunion and now are paying–literally – the penalty .
We also have metres , thrust upon us at the cost of the inch . Kilograms at the expense of the pound . Litres at the expense of Pints , all for the great god of “we couldn’t win the war so we’ll beat 'em with regulations” --and they are , we are the only ones stoopid enough to abide by them , the EU thought police ( jobs for the boys ) are very active . Not on the continent , but here .
So , I go into a timber merchants and ask for 10 foot of 2x1 please .
"Nah , mate , 3.something metres by 50 x 25 is the nearest you’ll get . "
So I buy that , get it home and it’s 10 x 2 x 1 . Only the label says different . Metric ,you see .
There is also a plot to discredit Imperial (the very name upsets the europlanks ) I bought a metal ruler the other day , fortunately as a straight edge for cutting wood . Made in euroland , not En-ger-land , the inches were inaccurate . Well , they would , you see , just to prove inches is no good .
So , you see , we , the world’s foremost engineering nation for a very long time , are being ripped asunder by the envious . But , they haven’t got rid of miles yet…I saw a costing for the changeover to kilometres , it was a staggering umpteen billion dollars ,so no guvmunt is going down that road–because they have to fund it , you see .
We poor saps funded the rest of the lunacy . As well as rounding weights up --1 pound now equals 1/2 Kg , the prices got rounded up even more .
So , cherish your 9-32 screws , they are a dying breed .
I do like a good screw , don’t you ?
Mike (non metric version )
Mike,
Here’s Rick Blanchard’s site chock full of useful data you might find useful. I seem to recall that he had a chart somewhere in here for screw and tap sizes too. Don’t remember for sure…
http://www.urbaneagle.com/data/
While I can’t say that Kadee uses metric or BA screws in their export couplers, the closest thing to a 2-56 screw would be an 8BA screw.
Later,
K
Kevin ,thanks . I have a massive pile of differing sizes of nut’s’n bolts which I garnered from various foolish people who thought they ought to get rid of non-metric . By gad , sir , I SHALL have models with good British bolts!
Richard , that’s a handy site , I have stuck it firmly with my " favourites " Thank you Sir .
Mike M