Need Threaded Stem Reducer for Casters

[ronl2k]

I have some chrome shelving kit pipes with 3/8" diameter stem threads that I'd like to use for inserting casters. I have some 1/4" thread casters lying around and would like to find a way to use them with the 3/8" diameter threading. Is there such a thing as a 3/8" to 1/4" threaded reducer for casters? TIA.

 

[nealtw]

You might find a coil to fit that might work.
https://www.google.ca/search?biw=10...13i10k1j0i7i30k1j0i30k1j33i21k1.0.J9fIQqG8BBQ

 

[Steve123]

Carr Lane make a threaded insert that would fit. This is not the intended use for the inserts, but it could work.
https://www.carrlane.com/en-us/prod...ts-thinwall-stainless-steel-inch/cl-1420-tsks

Carr Lane is a big manufacturer, but they more commonly sell to industry. Could be others who copy the Carr Lane product, too.

 

[ronl2k]

Thanks for your prompt reply nealtw. HeliCoils are an interesting tech that I'd never heard of. They seem more oriented towards repairing stripped threads than adapting one bolt thread to another. Those HeliCoils are also a bit pricier than I'd like. A HeliCoil kit on Amazon is $25.85, which is more than the cost of 4 new 3/8" threaded casters.

 

[ronl2k]

CarrLane charges $13.21 for four 1/4"-to-3/8" inserts. No shipping estimate but I suspect it might not be worth it with eBay offering $15.99 for 4 new 3/8" casters. And I feel more confident about inserting casters than applying thread inserts. Thanks for your reply Steve123, I'm learning a lot of new stuff about thread inserts here. I'll look more into thread insert tech even if it's not my final choice.

 

[ronl2k]

Thanks to the replies, I think I found what I needed. And the pricing is right.

3/8"-16 male to 1/4"-20 female thread adapter:

5 for $0.76/eBay (China)
5 for $3.63/eBay (USA)
https://i.imgur.com/zNQsbyQ.jpg