7/16" ACME LH 10 TPI Tap

[garf]

Hi All,
My first thread in this forum, will try not to cock it up.
Looking to source a 7/16" ACME Left Hand threaded tap of 10 threads per inch,to manufacture a bronze nut for a lathe crossfeed screw. I think I could get one from US, but thought I'd try OZ first.I can buy the nut new off the shelf, but there is nothing to it, and the price a little over the top.
I've also considered making a tap using the old feedscrew thread , but a HSS tap would be better still.
Thanks in advance,
garf

[benyop]

why not screw cut it in a lathe? A tap will end up costing you more than your new nut.

[Grahame Collins]

I googled 7/16" ACME LH 10 TPI Tap

and found this http://www.armurerieduroi.com/pages/lathe/lathe_acme.html


Is it a South bend cross slide nut, that you need to cut If it tis, this may help you and be heaps cheaper than a tap.

http://www.millermachineandfabrication.com/

Cheers Grahame

[garf]

Bought new Screw and Nut from Hercus at Regency Park a suburb of Adelaide.
Hercus built reproductions of the Southbend lathe that the Crossfeed Screw and Nut were out of. I didn't realise that they still stock some parts today even though they were building their lathes up to or over 50years ago.The nut is now a cast iron type where they were bronze in the Southbend,couple of other small differances but can easily be overcome. Total cost about $200 so not too bad. A set of taps, imported (7/16"ACME LH 10TPI) were about $100 before postage.
Regards,
Garf

[Robert WA]

Garf.
For your "favourites", in case there is a next time.
http://www.sutton.com.au/
Sutton make a big variety of tools, including taps and dies and would be worth a look.
I know them for their drill bits and holesaws and they produce a good product. I know nothing about machining metal so can't comment as to those tools.
Rob.