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[Andy B]

What's the difference between  this 4.75]https://www.ebay.co.uk/itm/BRAKE-PIPE-FLARING-TOOL-4-75mm-DIN-BUBBLE-ON-CAR-FLARE-BY-TRIDENT-T413705/183109692784?epid=22017019790&hash=item2aa2302d70:g:gbAAAOSw~gRV3Cdn&frcectupt=true]this 4.75 and this 3/16]https://www.ebay.co.uk/itm/HAND-HELD-BRAKE-PIPE-FLARING-TOOL-3-16-SAE-ON-CAR-FLARE-SINGLE-DOUBLE-FLARE/263509200093?hash=item3d5a5f4cdd:g:vdIAAOSwgtxcSICv&frcectupt=true]this 3/16

I ask as 3/16" IS 4.74mm 

[dave the builder]

it's SAE vs DIN
clicky pics of nipples  

[Andy B]

it's SAE vs DIN
clicky pics of nipples  

Ah! 

I hardly dared opened the link ..... 

[STEMO]

it's SAE vs DIN
clicky pics of nipples  

Thanks for that, Dave 

[dave the builder]

Other links available *

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[Field Marshal Dr. Opti]

it's SAE vs DIN
clicky pics of nipples  

Ah! 

I hardly dared opened the link ..... 

I was expecting a pair of rocket launchers.....

[Viral_Jim]

it's SAE vs DIN
clicky pics of nipples  

That's a far more sensible answer than "about 10p" which was what you were getting from me.... 

[Andy B]

it's SAE vs DIN
clicky pics of nipples  

That's a far more sensible answer than "about 10p" which was what you were getting from me.... 

 

[Marks DTM Calib]

it's SAE vs DIN
clicky pics of nipples  

That's a far more sensible answer than "about 10p" which was what you were getting from me.... 

Bloody bean counters 

[terry paget]

Enlightening, worrying. So what system do Vauxhall/Opel use, or do we have to dismantle a car to discover?

[terry paget]

I appreciate that the article observes that only SAE flares should be used in automotive applications, and only SAE flares are allowed on steel pipes, yet I am sure I have seen DIN flares and nuts on my cars.

[Doctor Gollum]

If you read it through it also says ISO/DIN flares are becoming much more prevalent (in the US where it was written) and are the standard on European cars

[dave the builder]

Unions  M10 X 1mm
I use "3/16 inch" copper because that's what my local factor has,i assume the metric is the same pipe  re packaged for people born after 1970 
IIRC my kit is DIN , my flare kit is not here to check because when I buy a car,one of the first jobs i do is check,clean,paint (or re-grease ) or replace any and all brake lines and hoses, I re-check pre MOT too ,but you need to match flares with what your joining to or is fitted .

[Marks DTM Calib]

If your using Cunifer it makes bugger all difference, its soft to the point it forms to the shape of the mating half when tightening anyway, the flare only really gives it a basic starting point.

[terry paget]

Unions  M10 X 1mm
I use "3/16 inch" copper because that's what my local factor has,i assume the metric is the same pipe  re packaged for people born after 1970 
IIRC my kit is DIN , my flare kit is not here to check because when I buy a car,one of the first jobs i do is check,clean,paint (or re-grease ) or replace any and all brake lines and hoses, I re-check pre MOT too ,but you need to match flares with what your joining to or is fitted .

What do you paint them with?
First jobs I do on buying a used car are remove all the wheels, discard any locking nuts, check for any play in steering joints, inspect tyres, inspect brakes, replace wheels, change oil and filter, check all lights, etc., washers, as for an MOT test. I shall henceforth do brake pipes next. Then change coolant, brake fluid, cam belt and pulleys.