[TR] TR bolt sizes and S-T Hardware Catalogue

[rjray.architect at gmail.com]

Hi TeriAnn.

 

I sent you the spare parts book and hardware book in a separate email.

 

>From what I can tell, you need bolt HB.1112 for the transmission to the mount, which is a 1/2-inch bolt UNF, and 1-1/2 inches long. You need two of those.

Of course, you will need nuts and lock washers to fit the bolts.

 

For the bracket to the frame, I think you just need nuts and lock washers. The nut part number is HN.2010, which are 7/16 inch UNF. I think you need two of the nuts.

I think UNF means 28 threads pe inch.

 

Hopefully, someone else can confirm what I am saying.

 

Good luck.

  Ron.

 

 

 

 

From: Triumphs <triumphs-bounces at autox.team.net> On Behalf Of TeriAnn J. Wakeman
Sent: Friday, August 29, 2025 5:03 PM
To: Don Hiscock <don.hiscock at gmail.com>; Triumph List <triumphs at autox.team.net>
Subject: Re: [TR] TR bolt sizes and S-T Hardware Catalogue

 

On 8/29/25 2:51 PM, Don Hiscock wrote:

Do you have a digital (or hard) copy of the Standard-Triumph Hardware Catalogue, TeruAnn?  It's a terrific cross reference to exactly what fastener corresponds to what part number in the TR2-3B Spare Parts Catalog 4th Edition (SPC4E).  Heck, for all I can remember, you might have a copy on your TR3A site!  I have an original hard copy, and it's a truly useful reference.

I do not which is why I asked people for bolt sizes. If I had the references I wouldn't need to ask. I am hoping someone with a rebuild in process could just go out and take a peek.

TeriAnn

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