The Ford Barn

WardAZ · 02-15-2011, 11:51 AM

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Steve Plucker · 02-15-2011, 11:52 AM

Both are OK depending if you have a 28-29 or a 30-31 Model A/AA Ford.

The type with the "U" slot was 28-29...the other type, with squared bottom, was 30-31.

I do not know the reasoning for the change but would be interested to know.

Pluck

Tom Wesenberg · 02-15-2011, 11:53 AM

Generally the rounded bottom is 28-9 and the square bottom is 30-1.

Glenn C. · 02-15-2011, 12:14 PM

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The reason for the squared slot, would have been due to the ease of broaching the slots. Tooling would have been cheaper to manufacture.

02-15-2011, 11:51 AM	#1
WardAZ BANNED Join Date: Jul 2010 Location: Arid-zona Posts: 20	original castle nuts ... Last edited by WardAZ; 01-15-2017 at 12:17 PM.

02-15-2011, 11:52 AM	#2
Steve Plucker BANNED Join Date: May 2010 Location: Walla Walla, Washington USA Posts: 6,066	Re: original castle nuts Both are OK depending if you have a 28-29 or a 30-31 Model A/AA Ford. The type with the "U" slot was 28-29...the other type, with squared bottom, was 30-31. I do not know the reasoning for the change but would be interested to know. Pluck

02-15-2011, 11:53 AM	#3
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: original castle nuts Generally the rounded bottom is 28-9 and the square bottom is 30-1.

02-15-2011, 12:14 PM	#4
Glenn C. Senior Member Join Date: May 2010 Location: Didsbury Alberta Posts: 838	Re: original castle nuts Sponsored Links (Register now to hide all advertisements) The reason for the squared slot, would have been due to the ease of broaching the slots. Tooling would have been cheaper to manufacture.