Gentlemen thank you for your responses and as normal the topic has drifted a little. To refer back to my original post, I required information as to the size of the Cotter Pin I would require for retaining the castellated nut on the Stub Axle of my 4/4.
Thank you tmg513 I have taken your advice and ordered the required Cotter Pins in stainless steel from John Worrell
Martyn, I did not want to buy a boxed selection of Cotter Pins in stainless steel, which is a material I am endeavouring to use in regard to fastenings as much as I can, as the cost would not justify use of the 3 or 4 popular sizes and the remainder being left in the box on a shelf. I appreciate that the Cotter Pins in question will be in a relatively benign atmosphere; however I wish to maintain consistency in the build, so I will stick to my preference. I must question your concerns in the malleability of the stainless steel as the same grade of stainless steel is used in fixing wire a product that is required to be twisted and bent repeatedly in application.
Now I contest your comment about the term Cotter Pin which is a name I have used for this type of split pin all my life, and I am not from the colonies. The definition in the Collins English Dictionary is
A split pin secured, after passing through holes in the parts to be attached, by spreading the ends
A tapered pin threaded at the smaller end and secured by a nut after insertion
And in the Oxford Dictionary it is: A metal pin used to fasten two parts of a mechanism together.
Origin Mid 17th century: of unknown origin.
However I must admit its correct title is a Split Cotter Pin
Finally, Steve thank you for your kind offer of suitable Cotter Pins but I think I am now sorted. However I will try to make it to one of the Much Marcle Meets in the future, hopefully in a Morgan 4/4 complete with stainless steel Split Cotter Pins
