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Discussion Starter · #1 ·
Hello all. I have recently got my hands on a set of side steps - stc8505 - for my 1996 4.6 hse (Japanese model).
I went out to install them today and found that I have a problem. My chassis doesn't have any way to attach them. There are holes in the outer chassis rail but there are no captured nuts on the inside of the chassis for bolts. I would assume that all chassis would be the same, regardless of engine etc. My previous 4.6 had side steps already installed - also a Japanese model.

Does anybody know of a way to attach them? There are no holes on the inner chassis member so I can't even run long bolts all the way through.
Any ideas or suggestions would be welcome.
 

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1995-2002 Range Rover P38A
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One option is to just use the holes - drill through where necessary - and use stainless steel bolts throughout.

Another option is fit M10 stainless rivnuts, using the double spanner method. This is the OEM way.

It's on my todo list to install my set so I've not directly tried either one. The problem with rivnuts is they sometimes slip. I had that problem when I was removing the sidesteps from my parts vehicle but they did fine for 20 years so maybe it doesn't really matter that much.

Example on YouTube covering the rivnut install process:
 

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Discussion Starter · #4 ·
WOW. I have never heard of rivnuts until now. I assume that that they will be available from a local fastener specialist down here in NZ. M10 rivnuts are the correct size?
I don't understand why the factory didn't just attach captured nuts on the inside - a quick welding job.

Again thanks for the advice.
 

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1995-2002 Range Rover P38A
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A place in the UK has them for 2.01 GBP each so I’m going that route. I inquired directly by email to the sales department about them. They responded with a picture but I can’t quite make out the part number. http://www.famousfour.co.uk/
290122
 

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Discussion Starter · #6 ·
Rivnuts are available here in aluminium, steel or stainless. Would the aluminium ones be strong enough or should I look at steel instead?
 

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Discussion Starter · #8 ·
Well I am finally getting on to this job after a long time of doing other things.
I have come across a part ANR6563 - this is noted as being rivnuts for attaching various side steps and other things. Does anybody know if these are the correct part that I need to go into the chassis?
 

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Yes they are. They are a hexagonal rivnut (so it can't rotate) that is fitted into the chassis rails.
 

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1995-2002 Range Rover P38A
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I used drywall fasteners that you put in the holes and tighten. Same things to mount tvs.
I guess it is a pill toggle but I trimmed a couple to fit better
Font Rectangle Screenshot Parallel Technology
 

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1995-2002 Range Rover P38A
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Hi Rowant,
I, like you, had no pre-drilled holes in my frame. I bought a right-angled drill attachment but to no avail. I found it impossible to drill holes into the hardened steel frame to fit rivnuts.

Instead, I had the running boards/side steps OEM mounts welded to the frame. Then bolted boards/steps to the mounts. It's been 5 years and I have had no problems.
 

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Discussion Starter · #12 ·
Mine has the pre-drilled holes - I believe that they are factory standard on all p38s. But only the individual cars that left the factory with side steps fitted had the mounting rivnuts installed. Cars that left without sidesteps just have empty holes in the chassis. If I am wrong can somebody set me straight.
 
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