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custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20359

Steering lock stop lock nuts P/N. (Genuine)

Does anyone know the part number for these?
Not the steering lock stop bolts themselves, but the lock nuts for them.

I bought some recently, but they appear to not be flanged but regular nuts.

The standard genuine fit is a flanged nut, I've adjusted my steering lock stop bolts recently.
They are fine, but one lock nut was slightly over tight so slightly rounded it when taking it off.
It's still fully useable but I'd like to replace both just for that reason.

Finding the P/N doesn't seem to be all that easy either.

Any ideas? $W33T $0U7H3RN $UG4R
ðŸ‡¬ðŸ‡§ðŸ´ó §ó ¢ó ¥ó ®ó §ó ¿ðŸ´ó §ó ¢ó ·ó ¬ó ³ó ¿ðŸ´ó §ó ¢ó ³ó £ó ´ó ¿ðŸ‡®ðŸ‡ªðŸ‡ºðŸ‡¸â›½ï¸ðŸ›¢ï¸âš™ï¸ðŸ§°ðŸ’ª

7th Oct 2017 8:38pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20359

These look the ticket and are like the standard fit:
http://www.ebay.co.uk/itm/171342190196
Can anyone confirm the thread size and pitch? $W33T $0U7H3RN $UG4R
ðŸ‡¬ðŸ‡§ðŸ´ó §ó ¢ó ¥ó ®ó §ó ¿ðŸ´ó §ó ¢ó ·ó ¬ó ³ó ¿ðŸ´ó §ó ¢ó ³ó £ó ´ó ¿ðŸ‡®ðŸ‡ªðŸ‡ºðŸ‡¸â›½ï¸ðŸ›¢ï¸âš™ï¸ðŸ§°ðŸ’ª

7th Oct 2017 9:10pm

nitram17

Member Since: 08 Jun 2014
Location: newcastle
Posts: 2261

Re: Steering lock stop lock nuts P/N. (Genuine)

custom90steve wrote:
Does anyone know the part number for these?
Not the steering lock stop bolts themselves, but the lock nuts for them.

I bought some recently, but they appear to not be flanged but regular nuts.

The standard genuine fit is a flanged nut, I've adjusted my steering lock stop bolts recently.
They are fine, but one lock nut was slightly over tight so slightly rounded it when taking it off.
It's still fully useable but I'd like to replace both just for that reason.

Finding the P/N doesn't seem to be all that easy either.

Any ideas?

NT112041L i think !
https://www.johncraddockltd.co.uk/land-rov...t-m12.html

8th Oct 2017 2:05am

Retroanaconda

Member Since: 04 Jan 2012
Location: Scotland
Posts: 2645

None of mine are flanged. Just regular M12 half nuts.

8th Oct 2017 9:37am

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20359

Nitram17 - Yes, that is the genuine PN I have and are a gold passivated finish Genuine and slightly thinner than standard.

Click image to enlarge

Click image to enlarge

Retro - Interesting. On mine. 2.4 Puma the factory fit nuts are flanged and look identical to those in the eBay link.

A nut is a nut I suppose, but I'd have thought they would be the same.

$W33T $0U7H3RN $UG4R
ðŸ‡¬ðŸ‡§ðŸ´ó §ó ¢ó ¥ó ®ó §ó ¿ðŸ´ó §ó ¢ó ·ó ¬ó ³ó ¿ðŸ´ó §ó ¢ó ³ó £ó ´ó ¿ðŸ‡®ðŸ‡ªðŸ‡ºðŸ‡¸â›½ï¸ðŸ›¢ï¸âš™ï¸ðŸ§°ðŸ’ª

8th Oct 2017 11:45am

nitram17

Member Since: 08 Jun 2014
Location: newcastle
Posts: 2261

sorry steve i should stop speed reading at my age !......landrover use that size nut and part number for many applications accross the range ...i think its just whatever was in the bucket when yours was built!

I find this site good for finding lots of stuff (puma 2.2changes not so much) especially if you dont know the part number as the diagrams are good!sorry in advance if this is a granny and eggs situation.

https://www.landroverworkshop.com/

Last edited by nitram17 on 8th Oct 2017 1:17pm. Edited 1 time in total

8th Oct 2017 12:56pm

Retroanaconda

Member Since: 04 Jan 2012
Location: Scotland
Posts: 2645

Yes they’ll be thinner than standard, which is what a half nut is.

Just ask your local fastener place for some M12 half nuts, sorted. They’re nothing special, if you’re worried about the lack of flanges just use a washer

8th Oct 2017 1:11pm

zsd-puma

Member Since: 09 Aug 2016
Location: Kent
Posts: 2720

2010 Defender 110 Puma 2.4 USW Santorini Black

you can even get some in stainless so they're less likely to seize up. If i recall correctly i replaced my bolts with stainless (as the one of them was chewed up or something.)

If you have fat tyres then it doesn't matter if you use full nuts as they wont be wound all the way in anyway.

8th Oct 2017 3:16pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20359

Ah, I see. That makes everything a bit clearer.
I was just really confused as to what the differences were and why for the same part.
The half nuts are better really for bigger tyre's as the protruding thread area is smaller.
I think I will use them with washers as suggested, I'd have stayed with the factory fit ones but with the nut slightly chewed it doesn't sit right with me just to nip it up, and forget it in case of future issues.
They are only lock nuts, but are important.

Thank-you for the info.

8th Oct 2017 3:41pm

zsd-puma

Member Since: 09 Aug 2016
Location: Kent
Posts: 2720

Quote:
The half nuts are better really for bigger tyre's as the protruding thread area is smaller.

Surely it's the other way? The more you wind the bolt in the more lock you get, so the tyre will rub on the radius arm on the opposite side of the car?

9th Oct 2017 9:31am

Martin
Site Admin

Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6605

2015 Defender 90 Puma 2.2 XS CSW Montalcino Red

Puma went over to FN112046 which is a flanged nut (FN). Aftermarket suppliers using this part number seem to be supplying unflanged though.

Pre-Puma the nut is NH112041L which is stated as a "thin nut" and unflanged.

Standard M12 though...

1988 90 Td5 NAS soft top

2015 D90 XS SW

9th Oct 2017 11:03am

Martin
Site Admin

Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6605

PS: £4.33 on eBay for a nut

1988 90 Td5 NAS soft top

2015 D90 XS SW

9th Oct 2017 11:06am

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20359

Martin - Thank-you. That is very helpful info.

ZSD - I went from 235 to 255 and the 235's didn't rub and were factory fit.
The 255's did rub, bizarrely on left lock only but not right lock.

I had to wind out the steering lock stops slightly to reduce the steering lock slightly to stop the rubbing.
This reduces the protruding thread on the opposite side on the bolt.

Initially I wound them out a little too much and compromised the steering lock too much, but did cure the rubbing.
Since I've wound them in a little more, with more lock but still no rubbing.

Initially I set them to around 33mm between tyre and Radius arm, this solved the rubbing but the turning circle was ridiculous.
I've now halved that, still no rubbing but clearance around 18mm or there abouts.

A Micrometer to measure lock stop bolt protrusion was incredible useful, and I have kept that info for refence.
Especially the standard lock, interestingly there was 2mm diffence between each side - no wonder there was rubbing on left lock only.
As far as I am aware nobody has ever touched them, nothing was loose so must have been factory tolerances.

I took measurements between biggest tread blocks (I have KM2's) and radius arm.
And the rear of the steering lock stop bolt to the body of the mounting the bolt goes into.

If anyone needs the info, I can post it later if you upgrade tyre sizes so you can do it quickly and easily.
It's best to use a Micrometer for accuracy though as best you can as by eye it will be out a fair bit.

Not that it's critical. $W33T $0U7H3RN $UG4R
ðŸ‡¬ðŸ‡§ðŸ´ó §ó ¢ó ¥ó ®ó §ó ¿ðŸ´ó §ó ¢ó ·ó ¬ó ³ó ¿ðŸ´ó §ó ¢ó ³ó £ó ´ó ¿ðŸ‡®ðŸ‡ªðŸ‡ºðŸ‡¸â›½ï¸ðŸ›¢ï¸âš™ï¸ðŸ§°ðŸ’ª

9th Oct 2017 1:07pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20359

Thanks to Martin, I have now sorted the nuts in question. (Purchased)
https://www.rimmerbros.co.uk/Item--i-FN112046

They are definitely the ones.
I looked through the part catalogues as best I could and online and kept coming up with the P/N for the half nuts and earlier type.

Even so £5 - £8 just for a nut or two, madness.

Just doesn't feel right to nip up, nuts or bolts with a partially chewed head and just not bother to replace..
Should have used the correct sized ring spanner in the first place.

9th Oct 2017 3:37pm

zsd-puma

Member Since: 09 Aug 2016
Location: Kent
Posts: 2720

On mine the lock stop locking nut is behind the bolt head, and tightens agaisnt the hub. So when you wind the bolt out to reduce the lock, you get more thread between the bolt head and the hub.

9th Oct 2017 9:54pm

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