For the trail rail/unistrut guys....what depth M6 screw to mount into bed?

[clubmanager]

I'm thinking of rigging this up myself with some extruded aluminum rails (t-slot) that I have from an old FJ Cruiser project (yes, I used to be on the dark side....or is this the dark side?) and need to mount to the bed. Still looking at how I want to mount the rail but will certainly need M6 screws easily found online; just unsure as to depth. Already bought a M6 Tap to remove bedliner material from holes.

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[MPMB]

I'm thinking of rigging this up myself with some extruded aluminum rails (t-slot) that I have from an old FJ Cruiser project (yes, I used to be on the dark side....or is this the dark side?) and need to mount to the bed. Still looking at how I want to mount the rail but will certainly need M6 screws easily found online; just unsure as to depth. Already bought a M6 Tap to remove bedliner material from holes.

They don't have to be very long, maybe between 10-15mm.

 

[bidingmytime]

I'm thinking of rigging this up myself with some extruded aluminum rails (t-slot) that I have from an old FJ Cruiser project (yes, I used to be on the dark side....or is this the dark side?) and need to mount to the bed. Still looking at how I want to mount the rail but will certainly need M6 screws easily found online; just unsure as to depth. Already bought a M6 Tap to remove bedliner material from holes.

I went with 20mm. I wanted to make sure they have enough bite but were not too long. I believe factory rails, I don't know their thickness, use 25mm. I used M6 Shoulder Bolts for the cab side as I didn't want a rail there yet.

Careful with the tap. The holes are really gummy and you could break even that. I heated the holes with a hair dryer on high and it seem to cut them out better than cold ones. I made a thread chaser with an M6 bolt.

 

[JTMJT]

I'm thinking of rigging this up myself with some extruded aluminum rails (t-slot) that I have from an old FJ Cruiser project (yes, I used to be on the dark side....or is this the dark side?) and need to mount to the bed. Still looking at how I want to mount the rail but will certainly need M6 screws easily found online; just unsure as to depth. Already bought a M6 Tap to remove bedliner material from holes.

K, I suck at metric. Mine are about 5/8" long

 

[clubmanager]

K, I suck at metric. Mine are about 5/8" long

Thanks y'all!! I'll get it sorted now....using Metric or 'Merican

 

[JTMJT]

Thanks y'all!! I'll get it sorted now....using Metric or 'Merican

LoL 5/8" = 15.8 mm

 

[clubmanager]

Guess I forgot ta ask for critical intel like thread and pitch?

 

[QuickOne]

Guess I forgot ta ask for critical intel like thread and pitch?

The bolts that came with my trail rail system were about 25mm long, M6x1.0.

 

[Jaxmax]

I got shoulder bolts from local Ace hardware store in stainless, I only did the sides and put two 3/8” eye bolts in large side corners at front, just figured one day I would be pissed trying to fit a five foot box in bed of truck that wouldn’t fit with a rail at front of bed……Jack

 

[Lonaldny]

Do you think the unistrut idea will work with the Mopar hard tonneau cover?

 

[cafecito]

Do you think the unistrut idea will work with the Mopar hard tonneau cover?

There's no reason it wouldn't. The rails would go into the pre-drilled holes along the top of the bed walls. The Mopar tonneau doesn't even come close to touching those.

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