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03-10-2014, 06:09 AM
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#1
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Montana Master
Join Date: Mar 2005
Location: Port Orchard
Posts: 1,153
M.O.C. #3403
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Nuts!!
What is the difference between a 1/2-20 lug nut 7/8" from a 1/2-20 3/4"? Had new rims, tires, and lug nuts installed; when I went to re-torque the lug nuts for an upcoming trip I found my 7/8" socket didn't fit. I found that they were 3/4". Called up the tire shop (Les Schwab) and I was told seat, strength, and torque were the same. 
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03-10-2014, 06:28 AM
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#2
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Montana Master
Join Date: Apr 2013
Location: Arroyo City
Posts: 3,110
M.O.C. #13395
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My guess is 1/8 inch
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03-10-2014, 06:57 AM
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#3
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Montana Master
Join Date: Feb 2005
Location: Haysville
Posts: 4,261
M.O.C. #3085
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Perhaps your new wheels have smaller lug holes drilled in them that a 7/8" socket wouldn't fit down in?????????????
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03-10-2014, 07:14 AM
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#4
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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That would be my guess also.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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03-10-2014, 07:22 AM
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#5
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Montana Fan
Join Date: Feb 2014
Location: Chico
Posts: 269
M.O.C. #14041
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1/8" is a reasonable answer
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03-10-2014, 08:16 AM
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#6
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Montana Master
Join Date: May 2011
Location: Fayetteville
Posts: 4,200
M.O.C. #11401
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The size of the lug nut does not change the torque on the stud and threads.
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03-10-2014, 08:27 AM
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#7
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Montana Master
Join Date: Mar 2005
Location: Port Orchard
Posts: 1,153
M.O.C. #3403
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Thank for the second opinions. The 1/8" I had figured out myself...thanks. Never hurts to get the impute of the MOC.
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03-10-2014, 08:34 AM
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#8
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,165
M.O.C. #6433
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Some lug nuts have a chrome cap over them. Maybe the 3/4" nuts are sized so a cover brings them up to 7/8".
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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03-10-2014, 01:22 PM
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#9
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Montana Master
Join Date: Aug 2007
Location: Waterford
Posts: 3,693
M.O.C. #7500
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Quote:
quote:Originally posted by BB_TX
Some lug nuts have a chrome cap over them. Maybe the 3/4" nuts are sized so a cover brings them up to 7/8".
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I believe the caps you are referring to are stainless, not chrome, and are a lot thinner than 1/16"
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03-10-2014, 03:30 PM
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#10
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Montana Master
Join Date: Mar 2011
Location: Okeechobee
Posts: 2,150
M.O.C. #11206
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Hi
If the lug stud is the same size as the original ones then there would not be any difference in the torque or capacity of the assembly.
According to the specifications published by several manufacturers the lug stud ½ diameter and 20 thread pitch for both the lug nuts that use a 7/8 wrench and the ones that use a ¾ wrench.
I would say it is most probable that the dealer just purchased from the local parts store instead from a specialty store and the nuts serve the same purpose.
Phil P
__________________
2009 Montana 3665RE
2009 Duramax 3500 DRW quad cab
personal web page https:// www.sallyscoffees.com
If you get a page not available then remove the "s" after HTTP
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03-10-2014, 05:04 PM
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#11
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Montana Master
Join Date: Mar 2013
Location: Hanover
Posts: 1,471
M.O.C. #13325
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Only thing I can think of is that there will be less contact area between the lug nut and your wheel. I've no idea if this means much of anything, but I'd contact the manufacturer of the wheels to find out if it does.
__________________
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03-10-2014, 11:58 PM
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#12
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Montana Master
Join Date: Mar 2011
Location: Okeechobee
Posts: 2,150
M.O.C. #11206
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Quote:
quote:Originally posted by WaltBennett
Only thing I can think of is that there will be less contact area between the lug nut and your wheel. I've no idea if this means much of anything, but I'd contact the manufacturer of the wheels to find out if it does.
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Hi
According to the specifications the area of the taper that centers the lug hole on the lug stud and contacts the wheel is the same dimensions on both nuts.
Phil P
__________________
2009 Montana 3665RE
2009 Duramax 3500 DRW quad cab
personal web page https:// www.sallyscoffees.com
If you get a page not available then remove the "s" after HTTP
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03-11-2014, 03:52 AM
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#13
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Montana Master
Join Date: Mar 2013
Location: Hanover
Posts: 1,471
M.O.C. #13325
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Then why worry?
__________________
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03-11-2014, 11:07 AM
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#14
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Montana Master
Join Date: Mar 2011
Location: Okeechobee
Posts: 2,150
M.O.C. #11206
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Quote:
quote:Originally posted by WaltBennett
Then why worry?
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There isn’t any reason to worry that’s why the OP asks the question to find out.
Phil P
__________________
2009 Montana 3665RE
2009 Duramax 3500 DRW quad cab
personal web page https:// www.sallyscoffees.com
If you get a page not available then remove the "s" after HTTP
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