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Mother superior



Member Since: 05 Aug 2013
Location: Surrey
Posts: 504

United Kingdom 
Drive flange bolts
Wise ones
So I want to change my drive flange bolts to the Allen key socket head style, I seem to recall a few gents on here have done the same and I’m wondering what the spec of the bolts are, I’d like stainless but I guess they’re a bit soft? Anyhoo any tips are much appreciated.
Wes Oh woe, oh woe
My crusty old landrover,
It will not go.
Post #948822 9th Apr 2022 7:59pm
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Race.it



Member Since: 27 Aug 2019
Location: Algeciras
Posts: 821

Spain 2010 Defender 110 Puma 2.4 SW Alaska White
Think col1 fitted some nice Titanium ones, from memory stainless a4 and not a2. That gives you close to the 8.8,, but only from what I read on here Searching for my first Defender...and started just as Covid hit, so talk about timing.

5 months after starting the search I found it, and here is the details
Post #948824 9th Apr 2022 8:26pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17430

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
The original hex head bolts are 10.9, which is the same as a standard off-the-shelf hex socket head cap. For this reason I use either bzp or s/c 10.9 SHC bolts.

I wouldn't dream of using stainless for this application.
Post #948828 9th Apr 2022 9:01pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3418

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
There is space to drill and tap to M12, then a stainless M12 A2-80 or A4-80 cap screw will be as strong as the original grade M10 10.9 bolts. But I would not go that route my self on a standard truck.
But is an option that few with lockers and high quality halfshafts take, although of course they stick to the higher grade cap screws. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #948846 10th Apr 2022 5:14am
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

United Kingdom 
Like Blackwolf, I used galvainsed cap head bolts on mine, with matching spring washers:


Click image to enlarge
 Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia
Post #948855 10th Apr 2022 8:04am
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Mother superior



Member Since: 05 Aug 2013
Location: Surrey
Posts: 504

United Kingdom 
Thanks gents
Can I be really cheeky/bone idle and ask what size and length they are as I’m away from the Landy at the mo.
Cheers
Wes Oh woe, oh woe
My crusty old landrover,
It will not go.
Post #948924 10th Apr 2022 7:16pm
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nitram17



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

Post #948937 10th Apr 2022 8:29pm
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100inch



Member Since: 15 May 2012
Location: Brunswick
Posts: 411

Australia 2010 Defender 110 Puma 2.4 CSW Santorini Black
Dinnu wrote:
There is space to drill and tap to M12, then a stainless M12 A2-80 or A4-80 cap screw will be as strong as the original grade M10 10.9 bolts. But I would not go that route my self on a standard truck.
But is an option that few with lockers and high quality halfshafts take, although of course they stick to the higher grade cap screws.

This is not correct. Whilst on paper they may have the same strength, different behaviour in tensile vs ultimate strength makes stainless bolting a no go. And not even going into the topic of ductility and fatigue. m
Post #948938 10th Apr 2022 8:56pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20427

United Kingdom 
I did the same as LRA and Blackwolf, mine were black I just keep them covered in a light film of ACF 50 to stop any surface corrosion and are hidden behind the boosts on mine and not on display anyway.

I wouldn’t go Ti or SS on these either due to the application they are for. $W33T $0U7H3RN $UG4R
🇬🇧🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🇮🇪🇺🇸⛽️🛢️⚙️🧰💪


Last edited by custom90 on 10th Apr 2022 9:50pm. Edited 1 time in total
Post #948940 10th Apr 2022 9:17pm
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Mother superior



Member Since: 05 Aug 2013
Location: Surrey
Posts: 504

United Kingdom 
Legends, one and all!
Thanks gents Oh woe, oh woe
My crusty old landrover,
It will not go.
Post #948942 10th Apr 2022 9:25pm
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Co1



Member Since: 19 Aug 2018
Location: North Yorkshire
Posts: 3677

United Kingdom 2013 Defender 90 Puma 2.2 HT Loire Blue
Race.it wrote:
Think col1 fitted some nice Titanium ones, from memory stainless a4 and not a2. That gives you close to the 8.8,, but only from what I read on here


Indeed I did. Quite ridiculous!! They do look nice though!
Post #948948 11th Apr 2022 5:02am
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3418

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
I will add that the thicker flanges, as on the 10 spline axles are M10x50. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #948949 11th Apr 2022 5:12am
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Grenadier



Member Since: 23 Jul 2014
Location: The foot of Mont Blanc...
Posts: 5829

France 2011 Defender 110 Puma 2.4 DCPU Corris Grey
LandRoverAnorak wrote:
Like Blackwolf, I used galvainsed cap head bolts on mine, with matching spring washers:


Click image to enlarge


Jesus Christ LRA. How clean? Pleeeease tell me that photograph was taken immediately after fitting a brand new wheel, tyre, flange and bolts, and not how it looks on a daily basis after ‘normal use’? Monsieur Le Grenadier

I've not been everywhere, but it's on my list.....

2011 Puma 110DC - Corris Grey
Post #948955 11th Apr 2022 6:22am
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geobloke



Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4410

United Kingdom 
So clean LRA... Wow... Shocked
Post #948966 11th Apr 2022 7:51am
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

United Kingdom 
Yes it was immediately after fitting everything new Laughing Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia
Post #948970 11th Apr 2022 8:34am
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