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Niels906

Member Since: 04 Jul 2020
Location: Bussum
Posts: 44

Replacing bolts and nuts

Probably a silly question, but how would I go about in replacing bolts and nuts. Do I always have to replace them with original LR parts, or can I order generic bolts and nuts. For instance I am looking to replace the prop shaft bolts. What kind do I choose? Is there an easy way to replace them? Thank you all!

8th Mar 2023 8:44pm

sako243

Member Since: 08 Jul 2014
Location: Wales
Posts: 1218

1994 Defender 110 300 Tdi CSW Alpine White

Ideally like for like I'd say unless you know better. Most will be stamped with a tensile strength (E.g. 8.

and usually thread matters especially if it's fine due to the clamping force it exerts.

Propshaft bolts are a bit special because of the space they work in - think they're still an imperial thread despite having a metric head size (or it's close enough). Ed
82 Hotspur Sandringham 6x6
95 Defender 110 300Tdi

8th Mar 2023 8:49pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17383

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

Propshaft are 3/8" UNF with a 9/16" AF head.

The front axle still has fasteners with BS, UN and metric threads.

Generic are fine as long as they are the same or equivalent size and grade.

8th Mar 2023 9:08pm

Mossberg

Member Since: 29 Feb 2020
Location: Lancs
Posts: 553

1993 Defender 90 300 Tdi HT Aintree Green

When refurbing my axles recently I found most of the bolts were grade 10.9 A lot of the bolts are also bi-hex and also not quite standard lengths. If you get the bolts as per part numbers they also have threadlock on them. I was going to look at using fixings I had at home but the tended to be 8.8, hex head and fully threaded.

8th Mar 2023 11:25pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17383

It's never a good idea to replace a bolt (which by definition is part-threaded) with a setscrew (which by definition is fully-threaded).

Generally the head style doesn't matter in engineering terms. Landrover are very prone to using flange head fasteners because on a production line they're cheaper than a hex head with separate washer.

8th Mar 2023 11:44pm

Niels906

Member Since: 04 Jul 2020
Location: Bussum
Posts: 44

Thanks all, after your advice I decided to go for identical replacement parts. Thanks!

14th Mar 2023 5:55pm

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