[Healeys] Tie Rod End Slotted Nuts

Sat Jan 4 15:48:40 MST 2020

Harold, 

Thanks for the info and you are probably right that I will have to get new ones. 

Regards, 

Charlie 

----- Original Message -----

From: "Harold Manifold" <manifold at telus.net> 
To: "Michael Salter" <michaelsalter at gmail.com>, "Charles Schott" <schottc at knology.net> 
Cc: "Healeys" <healeys at autox.team.net> 
Sent: Saturday, January 4, 2020 12:17:58 PM 
Subject: RE: [Healeys] Tie Rod End Slotted Nuts 

Charles, 
It looks like you have a Unicorn. I checked a machinery handbook and these were the closest I could find which you probably already know: 
7/16" x 14 TPI UNC American National Standard 
11mm x 1.50 International Metric 
7/16" x 14 TPI British Standard Whitworth 
We can eliminate British Standard Fine as the diameter is too small to match a pitch between 14 and 16. As Michael has suggested it may be a poor quality reproduction trying to match one of these sizes. My machinery books list 7 different thread types and the three above are the closest match. I will suggest finding a castellated nut to fit will be like finding an Albino Unicorn. 
It may be time for new tie rods.... Harold 

From: Michael Salter [mailto:michaelsalter at gmail.com] 
Sent: Saturday, January 04, 2020 9:23 AM 
To: Charles Schott 
Cc: Harold Manifold; Healeys 
Subject: Re: [Healeys] Tie Rod End Slotted Nuts 

Charlie, 
Further to my previous post I may have more information. 
I have come across, in my "DO NOT USE" box a "cheapo repo" Healey side rod sold by A H Spares under STG215 and Moss Motors under 667-550. (Don't get me started !) 
This part has weird threads on the rod ends. They are 11.96 mm in diameter and appear to be 1.5 mm pitch. That's a 12mm fine thread. 

M 

On Sat, Jan 4, 2020 at 11:53 AM Michael Salter < michaelsalter at gmail.com > wrote: 

Hi again Charlie, 
In your original request you said that the tie rod ends were the originals for your BN1. 
I have checked an NOS BN2 tie rod end and when I measure the 7/16" thread it is 0.433" (10.98 mm) diameter and the thread is exactly 20 T.P.I. This is a U.N.F. thread. 
A used early BN1 tie rod end thread is 0.435" (11.49 mm) in diameter and and the thread is exactly 18 T.P.I. This is a B.S.F. thread. 
The original tie rod ends on earlier BN1's were an adjustable type wherein a split pin could be removed and the slotted cap rotated for adjustment. 
After car C.# 157624 the tie rod ends were still B.S.F. but changed to a non-adjustable type wherein the threaded cap was locked by swaging and was not designed to be adjusted. 
If the tie rod ends that you are dealing with are unlike either of these then they are almost certainly not "original". 
If your thread count is 15 T.P.I. it is obviously neither of those and those tie rod ends probably fall into the "cheapo repo" category and the thread could be anything that the manufacturer could find. 

M 

On Sat, Jan 4, 2020 at 10:52 AM Charles Schott < schottc at knology.net > wrote: 

<blockquote>

The thread count appears to be 15 TPI. I have a 14 and a 16 TPI gage and it's between those two. Since a 12M X 1.5 die runs all the way down the threads, albeit loosely, and a 10M X 1.5 tap goes all the way through the slotted nut, again very loose, I think that it's metric. The diameter measures 10.97 MM with calipers and converted. I have not been able to find a 11M X 1.5 nut, let alone a slotted one. I have three of them but need three more. 

Regards, 

Charlie 

From: "Harold Manifold" < manifold at telus.net > 
To: "Charles Schott" < schottc at knology.net >, "Michael Salter" < michaelsalter at gmail.com > 
Cc: "Healeys" < healeys at autox.team.net > 
Sent: Friday, January 3, 2020 6:27:29 PM 
Subject: RE: [Healeys] Tie Rod End Slotted Nuts 

Charles, 
What is the thread per inch count and the major thread diameter of the ball joint (measure with a vernier or micrometer)? 

From: Healeys [mailto: healeys-bounces at autox.team.net ] On Behalf Of Charles Schott 
Sent: Friday, January 03, 2020 3:36 PM 
To: Michael Salter 
Cc: Healeys 
Subject: Re: [Healeys] Tie Rod End Slotted Nuts 

My car is CE# 226706 and I have a limited set of BSF taps and dies and none of them come close. 

The 12M X 1.5 die goes loosely all the way down over the stud threads. When I measure the diameter of the stud threads, they measure 10.97 mm. You tell me what I have. 

Regards, 

Charlie 

From: "Michael Salter" < michaelsalter at gmail.com > 
To: "Charles Schott" < schottc at knology.net > 
Cc: "Michael MacLean" < rrengineer.mike at att.net >, "Healeys" < healeys at autox.team.net > 
Sent: Friday, January 3, 2020 3:32:01 PM 
Subject: Re: [Healeys] Tie Rod End Slotted Nuts 

Charlie, 
If your car is prior to C.E.#228931 the castellated nuts for the original side and center rod ends will be part #2K3996 which I think is 7/16" BSF, (I don't have one to hand to check) however many of these ball joints have been replaced with the later UNF style over the years and they use FNZ307 7/16" UNF. 

M 

On Fri, Jan 3, 2020 at 4:09 PM Charles Schott < schottc at knology.net > wrote: 

<blockquote>

I need three slotted nuts for the original tie rod ends on a BN1. They appear to be metric 11M X 1.5 but I cannot find them. Does anyone have them or know where I can get them? Thanks. 

Regards, 

Charlie 

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