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Username Post: Knurl size        (Topic#359884)
Posts: 95

Reg: 08-12-17
02-21-20 08:44 AM - Post#2786994    

Hi everyone,

I am looking to replace my rear lug studs on my 62 impala with longer studs to make sure there’s enough thread for my new wheels. I can only find longer studs with the 0.487” knurl. I think the original is a 0.472” knurl? Will the larger knurl fit once it’s pressed in or do I need to keep looking for a longer stud with 0.472” knurl?

If there are any recommendations for the right longer lug studs,please send me the part #. I am just looking for a 0.5 to 0.75” longer Stud than original.


1962 Chevy Impala Hardtop 2DR
327 V8, 4 Speed Muncie M21

1980 Cadillac Coupe Deville


Member #574 "61-64 Subject Matter Expert"
Posts: 5734
Loc: Hightstown,NJ USA
Reg: 08-22-00
02-22-20 12:16 PM - Post#2787056    
    In response to wiz62impala

When I was racing in the early '70s, I had to use longer wheel studs. I forget which ones I bought, but they came with instructions to use a certain size drill and drill out the original holes. That's the only way to properly install studs with larger splines. Don't try to force them into the smaller holes.



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