seats out, false floor in, bolts too short

[Peter Comber]

Thank you everybody.
Much appreciated.

PC.

[Dr Gary]

Large Metric studs have a number on the head, denoting bolt strength, small have geometric code. US studs have slashes radiating from the centre, more means stronger.

[NataleeEstrada]

When disassembling old things, it is sometimes difficult to unscrew bolts because some of them are rusty, which can break the threads when stripping, making it much harder to get the bolt out. I have worked as a builder for a long time, so our customers do not have to deal with this problem; we use high-quality stainless steel bolts that we buy here at scrooz.com.au. This online store has a large selection of bolts, and I am especially glad they are sold at an affordable price.

[growler2058]

When disassembling old things, it is sometimes difficult to unscrew bolts because some of them are rusty, which can break the threads when stripping, making it much harder to get the bolt out.

Really, tell me more!

[mihit]

Just for interest there are some fine threads on my Patrol which appear not to be metric. They are in the chassis toward the back. I posted once before & no-one was able to ID what they were, & more surprisingly when I took the car to a bolt supplier with comprehensive stocks they too were surprised when they went through a heap of different bolts, checked with thread gauges etc & were unable to match the thread. They remain a mystery

Cross-threaded by a ham-fisted PO?

If you can't match it with a thread gauge....it's borked.

[mihit]

Get a bolt/thread guage off ebay. They're worth everything.

Or your friendly local engineering house...

[mihit]

Metric and fine pitch, as others have said. Vernier calipers and a pitch gauge and an "engineers black book" will tell you in short order. (These are 3 things that travel with me)

[Cuppa]

Cross-threaded by a ham-fisted PO?

If you can't match it with a thread gauge....it's borked.

Nope threads are in perfect condition, never been used. A fine thread, but not a standard metric fine thread. Same on both sides of the car.

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[MB]

There might be more to this agreed Cuppa Mate, GQ front end chassis’s might well have some variance too experienced. Could be 1.75mm pitch differences left to right and your Faithful Leafy GU could have a Commonwealth specified add-on?


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[MB]

That made no sense Apologies Cuppa, please do look up the chassis, if possible from the rear, if the nuts behind the chassis hole in question have a ‘tail’ welded/stuck for afterthought?


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