weasel_110 Posted June 7, 2013 Share Posted June 7, 2013 Doing me head...been all round the place today asking peeps what the thread is!Going to specialist fastener place tomorrow, they should be able to tell me!Here's the pic..The thread width is 20mm... Thanks! Quote Link to comment Share on other sites More sharing options...
simonr Posted June 7, 2013 Share Posted June 7, 2013 It's 1/2" BSP Si Quote Link to comment Share on other sites More sharing options...
western Posted June 7, 2013 Share Posted June 7, 2013 just get one from X-eng, it'll last far longer than any plastic plug. just click the blue link in Si's sig line above Quote Link to comment Share on other sites More sharing options...
Orgasmic Farmer Posted June 7, 2013 Share Posted June 7, 2013 There you go http://www.x-eng.co.uk/StoreDisplay.asp?SL=45&MID=79 Quote Link to comment Share on other sites More sharing options...
weasel_110 Posted June 7, 2013 Author Share Posted June 7, 2013 Thanks for the quick reply chaps and its my fault, I tried to put in the title 'Mines not 3/4 BSP!' Hi Si, I got one free from you about 3 years ago with the X-Fan kit..... Here's another pic.... Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted June 7, 2013 Share Posted June 7, 2013 Maybe I'm reading this wrong but... that looks like the same thread to me? As above, 1/2" BSP - very standard. Quote Link to comment Share on other sites More sharing options...
simonr Posted June 7, 2013 Share Posted June 7, 2013 OK, for roughly 20mm diameter, these are the options: Name OD/mm TPI Pitch/mm 3/4 ADM 19.050 14.0 1.8143/4 BRASS 19.050 26.0 0.9773/4 BSF 19.050 12.0 2.1173/4 CEI 19.050 26.0 0.9773/4 CEI20 19.050 20.0 1.2703/4 UNC 19.050 10.0 2.5403/4 UNF 19.050 16.0 1.5883/4 WHIT 19.050 10.0 2.540C HOLTZ 19.050 9.5 2.688 3/4 GAS 19.558 27.0 0.941 M20 Coarse 20.000 10.2 2.500M20 Fine 20.000 16.9 1.50013/16 ADM 20.638 14.0 1.8141/2 BSP 20.955 14.0 1.814 I'd bet on M20 x 1.5mm pitch. Quote Link to comment Share on other sites More sharing options...
weasel_110 Posted June 7, 2013 Author Share Posted June 7, 2013 Agree Si, have been at this from dinner time mate!Got a link for you, do you reckon this will do the trick? and it took some finding! http://www.a2stainless.co.uk/M20-x-1-50-x-14mm-Pipe-Plug-DIN-908-A4-70_AICDY.aspx I will be finding out for sure tomorrow what thread it is but I think it is, like you say, M20 x 1.5 Quote Link to comment Share on other sites More sharing options...
weasel_110 Posted June 10, 2013 Author Share Posted June 10, 2013 Finally nailed it! after hours on the web and about ten visits to local firms, They identified thread as M20 x 1.5...I can now fill and bleed the radiator from here, and not worry about the old plastic plug blowing out!Total cost £7.14 from here http://www.mrhydraulics.co.uk/ Thanks for the advice on here Chaps! Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted June 10, 2013 Share Posted June 10, 2013 Was it a non-genuine radiator? Quote Link to comment Share on other sites More sharing options...
weasel_110 Posted June 10, 2013 Author Share Posted June 10, 2013 Yes Bowie, it was!Aftermarket and made on continent somewhere?Most peeved when I received a new shiny X-Cap and it wouldn't fit! Cheers! Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted June 10, 2013 Share Posted June 10, 2013 TBH, I'm not surprised radiator manufacturers are standardising stuff to metric like this, they do supply the plugs with the rads, as you know Quote Link to comment Share on other sites More sharing options...
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