Guardsman Steering Guard fitting

[POSBORNE]

I have a 1991 Discovery, 200 Tdi, h reg.  I bought a guardsman galvanised steel steering guard from first four off road, an come fitting it today came across an issue with fitting it.
 
Its a pig of a job doing it by yourself, But it is attached by the bumper mounts along with two mounts located behind on the chassis. on one side there is a steering linkage, while on the otherside i can easily locate the bolt nad attach it to the guard. The mount with the steering linkage is mounted to, i can undo the nut and attach the guard, but is it safe to do so, and such it be tightened to any set figure?
Any help is much appreciated.
 
Thanks

[Range Rover Blues]

Yes it's safe, all steering guard use that bolt whether they go to the inside or outside of the chassis rails, even the OEM 'under ride bar' mounted there.

Not sure of the torque but you are unlikey to strip that thread.  Have a look in your manual.

[Guardian.]

as above, thats fine, just to add, use a new nylock!