After searching all over the place for ACME or Trapezoidal threaded rods and matching nuts at a sensible price in mild or low carbon steel, I was being told by lots of people who should know better that they are not available anywhere 'ex stock' and are only available on 'special order' and similar nonsense etc...
Eventually I got a Melbourne phone number to call from a stainless steel threading manufacturer.
The number was for "M.P. Sinclair Pty. Ltd." at 12 Lens Street, North Coburg 3058 - phone 03 9354 2588, Fax: 9354 6760
I called and was given a price 'per foot' for whatever I needed - at very reasonable prices indeed!
I asked if I needed to order it in advance (given the advice I had previously), and was told that eveything I could want was in stock and would be cut off for me in any size up to 12 foot length.....
Today I went there to pick up a 3 foot length of 3/4"x6TPI and a bronze nut to suit - total price $60
When I arrived, I found a very old small factory in a small side street in an old industrial pocket area in an old Melbourne suburb. The only open door led me straight into the middle of a machine shop with LOTS of old lathes and milling machines (all 30's 40's and 50's machines or older). OH&S wasn' invented when this place opened 65 years ago.....
Threaded rods of all kinds and sizes all over the place in huge quantities!
Three elderly gentlemen were quietly busy messing with machines and doing maintenance.
Someone asked if I was Joe who who rang last week and told qanother that I was after 3' of right handed mild steel 3/4" threaded ACME and a nut - they remembered me! How nice.
The older of the three went to a rack and looked expertly at a jumbled mess of threaded rods. I asked if he had a piece with a blank end (3/4" diameter without thread)? Yes, he would find a piece "over there".
He found one a showed it to me - totally unpreturbed by me walking with him through the place ducking under gantries and squeezing between machines.... how refreshing!
He found what I was looking for and carried it to a cut off saw. As soon as he had cut it, he spotted a small flaw in the thread shape at one end and said "I think I'll have to give you a discount", if that piece is acceptable...." - it was.
We got talking, I thanked him for the friendly service and that I admired his machines and promised to come back.
He then said he was turning 90 on Monday, he was the owner and it was time to close shop for him after 65 years - "the writing is in the wall and I can't reach it any more to wash it off".
So, the place is closing either at Christmas or next June. Another piece of history going.....
His reduction of stock discount is 50% for any order of 10 length "and better".
Anyone here needing threaded rod of any kind - call them and get yourself a bargain. I dread to think what happens to it all when the time comes to close shop......