Locline

[cropwell]

I just ordered this http://www.aliexpress.com/item/12pcs...012695829.html I need it for a machine I am building and for a glassblower mate who has a couple of double ended diamond lathes, which need lots of water. I have yet to see if it fits the Chronos bits I have (which are also Chinese in origin). If they do not fit I can still do the jobs with the stuff ordered, and $12.33 is under the customs limit, which I think is about £11. It could be crap when it arrives, BUT at about £8 I think it is worth a punt.

NPT 1/4" is 18tpi and BSP 1/4" is 19 - The plastic threads will deform to 'fit' with thread tape.
NPT 1/8" is 27tpi and BSP 1/8" is 28 - you probably wouldn't notice the difference there !

I have got taps and dies for some of these anyway, NPT is a tapered thread - if you are being picky about things and BSP is available in both parallel and tapered flavours. I don't like the tapered ones as I live in a parallel universe.