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73-87 Chevy _ GMC Trucks => Wheels & Tires => Topic started by: Mike85Silverado on October 25, 2012, 10:37:41 pm

Title: Lug nut size
Post by: Mike85Silverado on October 25, 2012, 10:37:41 pm

So for an 84 2wd c10, I need 1/2x20 lug nits right? Is that the only measurement I need to worry about? I'm lookin at some replacements on eBay because I have a buffet variety on my truck right now

Title: Re: Lug nut size
Post by: Mike85Silverado on October 29, 2012, 12:00:34 pm

Anyone?

Title: Re: Lug nut size
Post by: bd on October 29, 2012, 02:05:16 pm

Quote from: Mike85Silverado on October 25, 2012, 10:37:41 pm

So for an 84 2wd c10, I need 1/2x20 lug nuts, right?...

That should be the correct thread size for the lug nuts.  You should also see 5/8" - 3/4" of stud extending past the face of the wheels for the nuts to thread onto.

Title: Re: Lug nut size
Post by: Mike85Silverado on October 30, 2012, 11:09:25 am

   
1/2"x20 - Single Piece Solid Acorn Bulge Closed End Lugnuts - SET OF 20 3/4" Hex - (***These lugnuts may not fit factory OEM wheels, must check the type of wheel that you have***)


This is the eBay description. I think they're made for Jeep... Does that sound right?

Title: Re: Lug nut size
Post by: bd on October 30, 2012, 01:04:07 pm

Are you mounting steel or aluminum rims?

If aluminum, are the wheels stud-piloted, using tapered seat lug nuts, or hub-piloted (centering around a raised ring off the axle flange face that is concentric with the shaft), using square shoulder lug nuts?  You need to be able to answer this question in addition to thread size.

Factory steel rims, as well as most (but not all) aluminum rims, are stud-piloted and use a tapered seat lug nut.  You need to make sure the lug nut matches the style of rim.

Title: Re: Lug nut size
Post by: Mike85Silverado on November 01, 2012, 02:32:44 pm

I don't know about all that.. I got some American racing rims, I believe they're alloy. The lugs on it right now don't look tapered, they just look like normal nuts. Would it hurt if I ot tapered nuts?

Title: Re: Lug nut size
Post by: bd on November 01, 2012, 04:39:41 pm

Look at the left side of the lug nut in the image below.  That's the "taper" that tightens into the rim.  If your rims have a matching taper around the stud holes for the nuts to seat against then that is the style nut to use.  Most alloy rims and virtually all steel rims for our trucks use the tapered lug nuts.