Im going nutts, steering wheel lock nut and washer size? omg

[NMDerek]

horn nutt? steering wheel locking nut ?

 

so mine went missing and I'm seeing different results on my search  m 10 1.5  m12 x 1.5

 

and whats the purpose of the ribbed flange? tia sooo much, anyone got a spare ? my threads sure do seem tighter/smaller then the example pic above74 tii

 

BMW 2002 Nut Genuine 52462DN?

 

BMW 07129900047? 

 

#9 yes? says self locking but is it?

 

Edited February 19 by NMDerek
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[Mike Self]

Depends on the year of your car...earlier cars used the smaller diameter nut; later cars, the large one.  Not sure when the changeover took place, but my '69 has the 19mm nut and my 73, 21mm.

 

mike

[NMDerek]

thread size? my 74 seems very small

[tech71]

11 minutes ago, NMDerek said:

thread size? my 74 seems very small

measure it FFS!

[NMDerek]

10-4, car is at a buddy's house so I'll get right on that

[tech71]

41 minutes ago, NMDerek said:

and whats the purpose of the ribbed flange?

locking function of that lock nut, your stuff is so shiny!

Edited February 19 by tech71

[NMDerek]

1 minute ago, tech71 said:

locking function of that lock nut, your stuff is so shiny!

ribbedlocking function on the outside? whats its locking to the horn cover?  not my pic but I'll get the dirty one I have later 😎 

[tech71]

21 minutes ago, NMDerek said:

ribbedlocking function on the outside?

Jeez dude, its a high temp locknut, the ribs are probably a result of the mfgr process. Or maybe the "ribs" are for her pleasure

 

21 minutes ago, NMDerek said:

whats its locking to the horn cover?

Have no idea what you are asking/saying, horn cover smorn cover, the nut secures steering wheel to steering column.

High, low temp lock nut or plain nut with big wavy lock washer... Its all good. Head over to Ace (after you measure it)

Edited February 19 by tech71

[Mark92131]

The large nut is a M14 x 1.5 and the small nut is a M12 x 1.5/  You will need the corresponding wave washer based on your steering spindle.  You can use a modern locking nylon nut or a conical lock nut from Belmetric.

 

Mark92131

 

Nuts - Lock Nuts All Metal - BelMetric

BELMETRIC.COM

 

[Mikesmalaga72]

Get a vernier caliper measure diameter across the spindle to find either 12 or 14 mm by 1.5 pitch thread. As long as the initial threads your pic shoes engage lock it down. 

Edited February 19 by Mikesmalaga72

[NMDerek]

On 2/19/2024 at 3:57 PM, Mikesmalaga72 said:

Get a vernier caliper measure diameter across the spindle to find either 12 or 14 mm by 1.5 pitch thread. As long as the initial threads your pic shoes engage lock it down. 

fun fact I have one of those vernier caliper that has been sitting in my tool fetish shop for years and now i get to use it, the 14 is prob standard but man those threads seem smaller  , pics to follow... 

Edited February 23 by NMDerek
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[NMDerek]

m14 x 1.5 worked with a 1/2 washer, I swear I bought that size at big  joe's but it didn't work, maybe the nut was in the wrong bin. Anyways steering wheel is tight now. I still wonder what the design idea was for the ribbed flange, thanks all.

Edited February 26 by NMDerek
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[Mikesmalaga72]

The ribbed flange on that lock nut is meant for high vibration resistance such as drivelines or suspensions. I believe a nylock nut would be sufficient for the steering wheel application. For some reason BMW retrofitted the flange style as before they were nyloc.

[tech71]

7 hours ago, NMDerek said:

I still wonder what the design idea was for the ribbed flange, thanks all.

Well there are two popular methods  for high temp all metal locknuts to do what they do.

1. distort the threads a bit on upper portion usually by compressing.

2. A portion f the nut is formed into an elliptical shape.

Its likely those "ribs" are tool marks from those processes, some kind of sizing die.

 

Edited February 27 by tech71