Bolt and copper washer as I remember are special.  I use the Kennedy Engineering bleeder intead.

John
-------------- Original message from Malcolm Stebbins <mwstebbins@YAHOO.COM>: --------------

> Is the BOLT that is used to bleed the front radiator any special bolt?
>
> Does it have grooves in the threads to let the air escape?
>
> Is it just an ordinary 13mm bolt?
>
> If a special bolt, do you have one for sale?
>
> Malcolm