Left hand whit studding

Can anyone tell me where I can get some 1/4 whit left hand thread studding. I have exhausted my limited list of possibilities.

Thanks

Does it have to be 1/4" and whit? M6 can be had here:

https://www.cromwell.co.uk/shop/fasteners/threaded-rods/m6x1m-threaded-rod-lh-bzpgr-8-8/p/QFT6390870B

I suppose it could be done with a split die in a lathe or vise as long as the die could be held square. I had one of my apprentices at work many years ago put a thread on some 3/8" rod with a hand diestock. He showed me the 9" of thread and I nearly died laughing, he had made the most drunken thread I had ever seen. From one side it looked like parallel rings and the other looked like a twin start.

Edited By old mart on 14/04/2022 22:49:35

I'm not sure how long the studding needs to be, but pictured is a six-inch long two-way* 1/4" BSW screw I cut on precision ground 1/4" stock using a woodturning lathe and a tailstock die holder. It is a replacement for an original screw that had been bent through careless usage and rendered the whole tool unuseable. The job was easy to do and the tool now works very well indeed.

*i.e. right-hand thread one side and left-hand thread the other.

Edited By Bill Phinn on 15/04/2022 00:38:25

Tracy Tools do a die for 1/4 whit LH

https://www.tracytools.com/taps-and-dies/left-hand-thread-taps-dies-bsw?product_id=1294

David

This firm stocks 6" lengths but says larger quantities may be available, perhaps worth contacting them?

stainlessautomotivefastenings

Oddly enough I found them when looking for 1/4 20 UNC which I thought might be an alternative.

Brian G

Hi, I made a left and right hand M8 brass threaded rod with split hand dies. I held the rod in my collet chuck on my mini lathe and started the die while putting a little pressure on the die itself to keep it square to the rod, with a blank end arbor in the tail stock and turning the chuck by hand, then once the full width of the die was on, the rod was supported with a revolving centre, the left hand thread is a little longer than the right hand one and is about 110mm long.

This is for my Swiss Boy 116 lab jack. Swiss Boy 116

Regards Nick.

Edited By Nicholas Farr on 15/04/2022 08:54:31

Thanks for all the replies, I wanted this to make a couple of feedscrews on a small manipulator and the 20tpi would give thou increments with a 50 division handwheel. Just being lazy really and shall order a die from Tracy Tools.

All the best

Andrew Jackson

Try:

https://www.gwr-fasteners.co.uk/

They to an amazing range of studs and fasteners. I have purchased LH studding from them in the past.

Mike

To cut a long thread using a die on a lathe,hold a tailstock type die holder in the three jaw chuck with the appropriate die ,then hold the material to be threaded in an ER collet with a MT holder to suit the tailstock taper to obtain a firm grip on the rod, then with plenty of lubricant set the lathe to a low speed and cut the thread true,oil the lathe bed so that the saddle will slide easily.

I often use GWR for fixings I have needed (particularly imperial ones). Always had very good service.

But it might appear that (at times?) they source their items from other UK based manufacturers/suppliers as one order I received included an invitation to purchase from another source.

I would expect Peterborough bolts and nuts could source the threaded rod for me - at a cost, of course.🙂