The Triumph Dolomite Club - Discussion Forum

Sorry, can't actually answer your question, but the most reliable way I've found for sizes of nuts/bolts is to find the part number in the parts book, then x-ref them in the "Standard Triumph Hardware Catalogue"
https://app.box.com/s/i2x6rn1mk0mzql8qrhnj55yevtwu5tr5

new to this wrote: ↑Sat Sep 26, 2020 10:23 pm Hi mine after the bolt sizes for the rear trailing arms and the upper tye rods,can any one help

thanks Dave

Dave - attachment should help finding sizes

https://rimmerbros.com/Item--i-GRID008488

yorkshire_spam wrote: ↑Sun Sep 27, 2020 10:48 am Sorry, can't actually answer your question, but the most reliable way I've found for sizes of nuts/bolts is to find the part number in the parts book, then x-ref them in the "Standard Triumph Hardware Catalogue"
https://app.box.com/s/i2x6rn1mk0mzql8qrhnj55yevtwu5tr5

Apologies, I hadn't realized that BH607241 (7/16" UNF x 3") and BH607221 (7/16" UNF X 2.3/4") weren't in the catalogue - my suggestion was about as much use as a chocolate tea pot!

Upper arm bolt is HB1022, hex head bolt 7/16"UNF x 2 3/4" long


Trailing arm are HB1024, hex head bolt 7/16"UNF x 3" long

and for the shocker HB1019, hex head bolt 7/16"UNF x 2 3/8" long


The nyloc nut used throughout is YN2910,
which has an 11/16"AF head and also is deeper than a standard nyloc nut.




Ian.

yorkshire_spam wrote: ↑Mon Sep 28, 2020 6:26 pm

yorkshire_spam wrote: ↑Sun Sep 27, 2020 10:48 am Sorry, can't actually answer your question, but the most reliable way I've found for sizes of nuts/bolts is to find the part number in the parts book, then x-ref them in the "Standard Triumph Hardware Catalogue"
https://app.box.com/s/i2x6rn1mk0mzql8qrhnj55yevtwu5tr5

Apologies, I hadn't realized that BH607241 (7/16" UNF x 3") and BH607221 (7/16" UNF X 2.3/4") weren't in the catalogue - my suggestion was about as much use as a chocolate tea pot!

Im partial to tea and chocolate

sprint95m wrote: ↑Mon Sep 28, 2020 7:36 pm Upper arm bolt is HB1022, hex head bolt 7/16"UNF x 2 3/4" long


Trailing arm are HB1024, hex head bolt 7/16"UNF x 3" long

and for the shocker HB1019, hex head bolt 7/16"UNF x 2 3/8" long


The nyloc nut used throughout is YN2910,
which has an 11/16"AF head and also is deeper than a standard nyloc nut.




Ian.

Ian

Thanks, any idea why the nyloc nut is deeper than standard ?

Dave

Flyfisherman wrote: ↑Mon Sep 28, 2020 10:04 am

new to this wrote: ↑Sat Sep 26, 2020 10:23 pm Hi mine after the bolt sizes for the rear trailing arms and the upper tye rods,can any one help

thanks Dave

Dave - attachment should help finding sizes

https://rimmerbros.com/Item--i-GRID008488

Thanks

new to this wrote: ↑Mon Sep 28, 2020 10:31 pm Thanks, any idea why the nyloc nut is deeper than standard ?

You can tighten them up more without stripping the thread.



Ian.

yorkshire_spam wrote: ↑Mon Sep 28, 2020 6:26 pm

yorkshire_spam wrote: ↑Sun Sep 27, 2020 10:48 am Sorry, can't actually answer your question, but the most reliable way I've found for sizes of nuts/bolts is to find the part number in the parts book, then x-ref them in the "Standard Triumph Hardware Catalogue"
https://app.box.com/s/i2x6rn1mk0mzql8qrhnj55yevtwu5tr5

Apologies, I hadn't realized that BH607241 (7/16" UNF x 3") and BH607221 (7/16" UNF X 2.3/4") weren't in the catalogue - my suggestion was about as much use as a chocolate tea pot!

Not really relevant but an interesting point, both those trailing arm bolts (BH607241 and BH607221) are used on the TR7 trailing arms. Being 7/16" UNF they are odd because most of the rest on the TR7 body stuff is metric !!

And once you have found the part number or size order them from https://www.namrick.co.uk/#:~:text=Nuts ... il%20order.

much cheaper than other 'specialists'

Picking up on this thread and in particular on the YN2910 nyloc nuts.......

These are the deeper, larger Nyloc nuts with the 11/16 spanner size rather than the 5/8 size that is the norm now. Rimmer's no longer do the 11/16 spanner sized nut, superceding the part to the smaller 5/8 version. I have tried sourcing these new and I am having trouble as they seem almost impossible to find.. Namrick as an example used to stock them but not any longer...

So on the basis that I cannot find new ones, I assume using the ones I have taken off (11/16), if they are in a good visible condition after a good clean up, would be better than using new 5/8 spanner sized nylocs? Or does it not really matter?

Views/opinions appreciated, or if anyone knows where these can be obtained new..............

Thanks

Chris Witor lists them:

https://www.chriswitor.com/proddetail.php?prod=YN2910

marshman wrote: ↑Tue Jan 26, 2021 5:34 pm Chris Witor lists them:

https://www.chriswitor.com/proddetail.php?prod=YN2910

Ouch, assuming priced each.
Canleys list them, £18 for a pack of 100, or 30p each. However, worth checking they are the larger spanner size.

saying all that, the curent 5/8 spanner size nuts are fine everywhere I have used them (yes, I bought a big bag of all teh usual sizes years ago, almost out of 5/16 now, plenty of the bigger sizes though)

This company have the correct nuts.

https://www.arunfasteners.co.uk/stock-r ... sert-nuts/

Listed as: - 7/16 UNF Nylon Insert Nut x 0.687 A/F Zinc, which is 11/16".

They seem to list absolutely every type of nut and bolt available. Not sure on price, you have to call them. I intend to get a list of every nut and bolt I need and order from them in one hit, as I know they prefer a larger order.