Undercarriage Nut Size Part 2

Efthreeoh · 03-09-2020, 12:50 PM

Since the thread was closed and the OP thought his question went unanswered, I'll try to clarify for him. So it ended up the OP was asking for the thread size of the corresponding nut that BMW uses to affix undercarriage parts to the chassis where there is a stud protruding from the floor pan.

There is no thread size for the nut. The nut is plastic. The stud thread is akin to a course wood screw thread. There is no specific thread size (i.e. diameter x thread-count) of the corresponding nut that threads on to the stud. The plastic nut is thread-less and the threads are formed into the pliable plastic as the nut is turned on the stud. The only spec for the thread would be the diameter of the stud with no thread-count or thread pitch specified.

So all in all, several Posters to the OP's Thread, gave him the correct answer with specific P/N to reference. The OP failed to recognize he was given the answer (several times) because he didn't understand what he was asking for.

gbalthrop · 03-09-2020, 03:35 PM

+1 (NOT from Bali

)

"Self-tapping" plastic nut with no stated ID or thread pitch, exactly as described by "F30". Item #7 in this RealOEM page:
https://www.realoem.com/bmw/enUS/sho...diagId=51_6216

AND YES, an 8mm socket turns the nut just fine, just like the 8mm-head diameter screws that hold the Splash shields.

BTW, "F30" has his own LIFT and has been under his vehicle several hundred times. NO-WAY I'm going to claim to know more than he does about what's underneath an E9x.

George

Law · 03-09-2020, 09:18 PM

Now that the answer is clear as day, we can finally put this behind us.

03-09-2020, 12:50 PM	#1
Efthreeoh General 17315 Rep 18,737 Posts Drives: The E90 + Z4 Coupe & Z3 R'ster Join Date: May 2012 Location: Virginia iTrader: (0)	Undercarriage Nut Size Part 2 - The Answer Since the thread was closed and the OP thought his question went unanswered, I'll try to clarify for him. So it ended up the OP was asking for the thread size of the corresponding nut that BMW uses to affix undercarriage parts to the chassis where there is a stud protruding from the floor pan. There is no thread size for the nut. The nut is plastic. The stud thread is akin to a course wood screw thread. There is no specific thread size (i.e. diameter x thread-count) of the corresponding nut that threads on to the stud. The plastic nut is thread-less and the threads are formed into the pliable plastic as the nut is turned on the stud. The only spec for the thread would be the diameter of the stud with no thread-count or thread pitch specified. So all in all, several Posters to the OP's Thread, gave him the correct answer with specific P/N to reference. The OP failed to recognize he was given the answer (several times) because he didn't understand what he was asking for. __________________ A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission." Last edited by Efthreeoh; 03-09-2020 at 01:02 PM..
	Appreciate 2 tlow982188.00 Antetokounmpo1551.50 Tweet

03-09-2020, 03:35 PM	#2
gbalthrop Brigadier General 2697 Rep 4,031 Posts Drives: 2007 328xi E91 Join Date: May 2017 Location: Fairfax Co, VA iTrader: (0)	+1 (NOT from Bali ) "Self-tapping" plastic nut with no stated ID or thread pitch, exactly as described by "F30". Item #7 in this RealOEM page: https://www.realoem.com/bmw/enUS/sho...diagId=51_6216 AND YES, an 8mm socket turns the nut just fine, just like the 8mm-head diameter screws that hold the Splash shields. BTW, "F30" has his own LIFT and has been under his vehicle several hundred times. NO-WAY I'm going to claim to know more than he does about what's underneath an E9x. George
	Appreciate 0

03-09-2020, 09:18 PM	#3
Law Global Moderator 6381 Rep 2,309 Posts Drives: E90 M3 6MT Join Date: Jan 2009 Location: USA iTrader: (1) Garage List 2011.5 BMW M3 [10.00] 2004 BMW M3 [10.00]	Now that the answer is clear as day, we can finally put this behind us. __________________ 2011.5 E90 ///M3 \| 6-Speed Manual \| Slicktop \| Jerez Black \| Fox Red E9x M3 Press/Media Archives Thread \| S65-based Racing Engines Thread
	Appreciate 0