Wheel stud problems

[swampdonkey]

ok i would really appreciate some help. i am pretty new to working on vehicles and i have a small problem. i need longer wheel studs for my 77 k10. every site i look at gives me 2 different knurl diameter and underhead length sizes. the knurl diameter and the underhead length are chinese to me. what are these 2 measurements? and how can i tell what mine are?

 

[crazy4offroad]

Wheel studs have flaired out parallel ribs on them where they pass through a wheel hub, these are called knurls. They are typically 1/32" or so larger diameter than the hole they go in, so the stud doesn't spin when you tighten a lug nut. The length of the knurl under the head is the underhead measurement. This should be approximately the same as the thickness of the wheel flange the knurl goes through. Rear wheel flanges arent as thick as the front. Rear it just goes through the axle shaft, where on the front it goes through the hub and the rotor. Hope this helps!

 

[swampdonkey]

thanks for clearing that up. any idea how i would go about finding those measurements to be able to order the right studs?

 

[89Suburban]

thanks for clearing that up. any idea how i would go about finding those measurements to be able to order the right studs?

Get your hands on a micrometer and measure an old stud and/or the hole.

Welcome aboard.

 

[bucket]

You may get a parts counter guy to go through a wheel stud catalog to get the specs of a stock replacement stud.

Whereabouts in Ohio are you?

 

[smurph20]

Find a parts guy that knows how to look them up in a DORMAN catalog. Once you find your stock ones in there its easy to find some that are a lil longer with the same knurl.

 

[swampdonkey]

thanks everyone!!

 

[89Suburban]

I got a good source that says to use these:

Dorman Part #'s:

Front: 610-179

Rear: 610-186

 

[bucket]

I got a good source that says to use these:

Dorman Part #'s:

Front: 610-179

Rear: 610-186

Is that for stock length, or a little longer?

 

[89Suburban]

Is that for stock length, or a little longer?

Stock.