RichardPerou
Well-Known Member
What is the difference between M20 and W20 thread?
What is the difference between M20 and W20 thread?
- Thread starter RichardPerou
- Start date
Lakesailor
Well-Known Member
Apparently the W20 has "a 5 degree angle on the load side of the thread" whatever that means.
Is it gas bottles you are concerned about This page http://www.motorcaravanning.co.uk/shopuk/gaslow_all_catalogue.htm has a bit about it under "Hose Fitting Information"
However BES say "The M20 inlet thread accepts the W20 threaded hose assemblies" for their regulators http://www.bes.co.uk/products/063.asp
Is it gas bottles you are concerned about This page http://www.motorcaravanning.co.uk/shopuk/gaslow_all_catalogue.htm has a bit about it under "Hose Fitting Information"
However BES say "The M20 inlet thread accepts the W20 threaded hose assemblies" for their regulators http://www.bes.co.uk/products/063.asp
earlybird
Well-Known Member
That sounds like a buttress thread, which is a well established form, but I've never heard/ seen it described as "W"
Lakesailor
Well-Known Member
Apparently the buttress thread is 7°. The machinist forum I found said they were different threads (post #3)http://www.practicalmachinist.com/v...0-collet-buttress-thread-pd-long-shot-109223/
Hugh Foulis
Well-Known Member
Thats a really interesting machinist forum you found Phil. Does it also come in English?
Lakesailor
Well-Known Member
I used a speed-reading technique which only collects known phrases to make some sense out of it.