Wheel Studs

[ligito]

I want to press some wheel studs into some 1/4 x 4 in flat bar.
The knurled shoulder diameter is .575 in.
What should the hole diameter be drilled to?

[Lucafu1]

i would use a 9/16" hole. 9/16= .5625"

[1havnfun]

if its a 1/2" stud and you want it to stay.
17/32"( .531)

The knurl is suppost to keep it from turning. I know one guy will push em into a 1/2" hole just to make sure. Over kill.

[ligito]

The stud is 7/16-20.

[1havnfun]

I looked at some wheel studs we have here.
There is a section right in front of the knurl that is clean.

drill the hole that size.

[m.k.swelding]

do it the easy way and drill it a size bigger then weld it in place

[griff01]

do it the easy way and drill it a size bigger then weld it in place

That could possibly be the worst advice I have ever seen on this or any other forum.

Griff

[monte55]

That could possibly be the worst advice I have ever seen on this or any other forum.

Griff

why.......?

[pro70z28]

I've seen worse.........

[ligito]

For my application it could work but I'd rather press it in.
I could just bolt it but that would make it too easy.

[crawdaddy]

why.......?

My guess is the welded stud would be more prone to cracking due to the HAZ under load than a press fit.Mike

[griff01]

why.......?

Surely you do not need that explained.

Griff

[monte55]

Actually I do. Does anyone even know what the OP is doing with the wheel studs. If they were talking about replacing studs on a car or trailer part I would agree welding would not be the way.
That certaintly is NOT the worst advice I've seen on this forum.
Nick

[Daniel]

It's going thru 1/4" x 4" flat bar, not much for the knurl part to hold on to maybe 2 tacks wouldn't be a bad idea. It wouldn't hurt anything that's for sure

[con_fuse9]

why.......?

On many cars the wheel is centered by the the studs. If you allow the studs to float around you will loose that. Not sure what tolerances matter, but lets just say most hubs are machined to better than .001. .001 is the kind of runout a good set of brake rotors (which sit on top of the hub) have when bolted to the hubs.

The bolts are heat treated. You want to mess with that?

Anyway:

From this page: http://www.arp-bolts.com/FAQ/Answers.html

"To determine what drill size you need for your wheel studs, you will need to know your axle/hub material and the wheel stud knurl diameter. If your axle/hub material is cast iron/steel your drill size will be .005˝ less than the knurl diameter. If your axle/hub material is aluminum, your drill size will be .007˝ less that the knurl diameter. The Wheel Studs Section in the catalog shows the knurl diameter sizes."