Alex
I've just had a look through "machinery's" screw thread book.
I cannot find anything listed of the size and pitch you have given. It seems they are a special. Maybe someone will point us in the right direction.
Any progress with the tank?
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Bluebell
Carrier Armoured O.P. No1 Mk3 W. T84991
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6.
Dodge WC55. 37mm Gun Motor Carriage M6
Jeep Mb #135668
So many questions....
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