What threads are the maxi balljoints?

[aerosam]

I bought my maxi balljoints as part of a package from somebody on the anti Chris Gibbs forum and unfortunately I only received 1 nut. Now I have the car as a rolling chassis the bottom wishbone just falls out with no nut to hold it on.

So what is the thread, and does anyone possibly have a spare nut?

Thanks!

Sam

[aerosam]

surely somebody must know?

[Beardy_John]

I got mine from ebay, and they came with nuts. I'll measure them up tonight, unless someone beats me to it :)

[londonsean69]

I bought my maxi balljoints as part of a package from somebody on the anti Chris Gibbs forum and unfortunately I only received 1 nut. Now I have the car as a rolling chassis the bottom wishbone just falls out with no nut to hold it on.

So what is the thread, and does anyone possibly have a spare nut?

Thanks!

Sam

Surely you have a caliper or steel rule and a thread guage. Most Tap & Die kits come with a thread guage. Having said that, mine is metric only.

Or just very gently try a few nuts on it to see if one fits.

I have a sneaky suspicion it might be imperial

Sean

[Bonzo]

I believe they are 7/16" UNF

Had a quick look but have every possible Nyloc nut other than that one :confused: :confused:

[AshG]

from memory i think they are to corse to be 7/16 but i could be wrong.

[Bonzo]

Right this is the best I can do

I have two different brands of ball joint, One is made by Veco & the other is made by QH.

Both have the same thread.

I have just put my digital caliper on them. In metric the diameter of the treaded part is 11.9mm

Now here is the problem :confused: :confused:

Both the 20 TPI & 1.25 thread gauges fit the thread.

My Osborne cutting tool guide lists the following Two possible sizes.

M12 X 1.25 is a standard metric fine thread

7/16" X 20 TPI this is listed as a UNF thread size

Looking at my metric conversion chart, it is noted that the mertic range for 7/16" is 11.112 - 11.5mm

So given the outside diameter of the thread, it is probable that the thread is M12 X 1.25 ( Metric fine )

But I would not still rule out the 7/16" UNF in view of the possibility that this component could pre-date the metric era.

Please remember, This information taken from my tool guide & intended as a guide only :)



With a little luck, some of the more able engineers on the forum will have an exact answer. ;)

[aerosam]

thanks guys.

An M12 nut will grip the first thread only then not screw down any further.

I can see me having to go and buy another balljoint just for the nut :(

[Bonzo]

A standard M12 metric nut will not fit

If it is a 12mm thread it will be a M12 X 1.25 thread pitch.

Probably your best option would be to vist your local steel stockist or engineering fixing stockist ( Take the joint with you ).
Either should be able to give you an exact answer.

Both 7/16" UNF & M12 X 1.25 are available on ebay ;)

[AshG]

just take it down the local fixings shop and get them to find a nut that fits it.

my local chap managed to get me m18 1.5 fine nyloc nuts. took him 2days to find them but those babys are like hens teeth

[londonsean69]

just take it down the local fixings shop and get them to find a nut that fits it.

my local chap managed to get me m18 1.5 fine nyloc nuts. took him 2days to find them but those babys are like hens teeth

What did you need the nylocs for in M18?

Sean

[alga]

Hmm, I think M12x1.25 is the typical thread for wheel lug nuts on Japanese cars. But apparently Ford uses M12x1.5.

[londonsean69]

Hmm, I think M12x1.25 is the typical thread for wheel lug nuts on Japanese cars. But apparently Ford uses M12x1.5.

Ford are M12x1.5 for the wheel studs.

But we are talking about the bottom ball joint.