while 3/8″BSP is quite common in many countries, i am aware that there are exceptions to the rule
a customer has written to me today and provided some very useful information – he has found that caravan stores have a great range of what you might call ‘specialist’ 3/8″ BSP fittings – e.g. for through wall mounting, etc, etc
i would never have thought of this as a place to look
i provide for your benefit the two links that were sent to us;
An engineering shop in the UK
http://www.penguineng.com/TapsShowers/Accessories/BG0038PenguinTap.php
A caravan shop in the Australia
http://caravansplus.com.au/catalog/product_info.php?products_id=8541