About "AFTERMARKET manufacturer's wheel hub bearing" and wheel stud bolt Knurl size

[far eastan]

Good evening everyone.
I am thinking of replacing the hub bolt (wheel stud bolt).
Rockauto has GM, PTC and Dorman.

Thread size M12-1.5

GM Shoulder Diameter (mm) 12.44
M12x1.5x40
PTC Knurl Diameter 12.73mm
Thread Length 41.5mm
DORMAN KNURL DIAMETER (in) 12.726 mm
SHOULDER DIAMETER (mm) 12.47
From this information, I probably need a stud bolt of M12-1.5 Knurl Diameter 12.73 (0.501in-).
It seems to be used until 12.90 (0.509), is it acceptable?

I am replacing the wheel hub.
In this case, can I think that "Stud Bolt Knurl Size of After Market Parts" is the same as GM genuine?
I asked Timken many times by email, but I didn't get a reply.
Should I ask Rockauto who purchased the hub bearing?
I think GM genuine can be used, but do you have any experience?
thank you.

 

[Mooseman]

Shoulder diameter shouldn't really matter. As far as the knurl size, I think it's just a matter of the PTC size being rounded up from 12.726 to 12.73 mm. This is 4 thousandths (.004) of a mm so this is really inconsequential. The thinnest human hair is 0.017 mm, four times thicker than the difference.

If you are replacing the entire hub, the new one will come with the studs pre-installed so no worries about finding replacement studs.

 

[far eastan]

thank you.
I'm not very worried about 12.72 and 12.73.

12.8 and 12.73 were written that it would comply with the same car, even for GM genuine products. (Strictly speaking, it may be different from TB)
Other brands had up to 12.90 in diameter that was compatible with TB.
I think 0.2 mm is tolerated by amateurs, but I am worried.

and,
Timken's wheel hub bearing has already been replaced. Of course there was a bolt (laughs)
I want to replace the hub bolt for a long one.


I am planning to buy the summer tires next year.
Since the outer diameter (Overall Diameter?) Is slightly larger, I'm thinking of putting a spacer to dodge the steering knuckle.
It is regulated that the tires protrude from the body.
With a 1INC or higher wide tread spacer (wheel spacers with bolts), I probably must have a new vehicle inspection.
To avoid that, first consider whether the spacer can be adjusted.
I'm looking for a long hub bolt for that.

Currently, I have found a 50-58 thing of Knurl Diameter12.73, a length of 60 mm for Corvette, and about 50 to 58 of 12.90.
There is a type with a thread to the tip, and a type that does not have a thread at the tip, so it is important other than the overall length.
Even with GM genuine, some new part numbers have shorter threads.
thank you.

 

[jerflash]

The hubs are made to be almosyt exact to stock so stock studs will work in aftermarket hubs, ive done it when i was running extended studs.

I do recommend getting only GM hubs since they are the only ones that last and have life time warrenty.

 

[far eastan]

thank you.
I gave up because there was no response from the manufacturer.
I believe that the size of the hole is exactly the same.
Thank you for your advice.
Currently, TB's GM genuine Stud bolts that can be purchased are GM Genuine 09595178.
It is M12xp1.5x40mm.

However, there were more than 55 mm of stud bolts that I removed from the "factory wheel hub".

Current replacement stud bolts are a bit shorter.
No long bolts for TB were found.
But I think I can use a bolt for Corvette.
Only one long GM stud that could be used for this wheel hub was found.
22551491
This is 68mm.

Of course, I think it's best to use GM genuine.
However, for example, there are also trusted brands such as ARP.
I found a 63.5mm thing.
Unfortunately, these stud bolts cost about $ 8 per piece.


I ordered tires last month, but I haven't received any contact from the purchased shop.

If the tires arrive and set on the wheels, attach them to the car to check the interference.
And if I can respond with a thin spacer (~ 0.5inc), I will replace the bolt with a longer one.
However, if I need a thick spacer (0.75inc ~), it may not be necessary to replace bolts.
I am waiting for contact from the store now.

 

[jerflash]

arp will fail in 2 years MAX. i know because ive been though 6 chinese hubs on my truck over 5 years until i put in the GM ones lol

 

[far eastan]

It's a very disappointing information ...
I'm very sad.
thank you.

 

[far eastan]

Just in case ...
I recently found something confusing while investigating a wheel hub spacer.
APR
Brand: Autopart Premium

For 2003-2006 Chevrolet Trailblazer EXT Wheel Spacer Kit APR 67713CRVP 2004 2005 | eBay

2004-2006 Chevrolet Trailblazer EXT B 4.2L 6 Cyl. 2003-2006 Chevrolet Trailblazer EXT LT 4.2L 6 Cyl. 2003-2006 Chevrolet Trailblazer EXT Base 4.2L 6 Cyl. 2003-2006 Chevrolet Trailblazer EXT LT 5.3L V8.

www.ebay.com

This may be made in China.

ARP is probably an American company.

ARP | The Official Web Site

arp-bolts.com

https://arp-bolts.com/kits/arpkit-detail.php?recordid=5166

When I read a review (SUMMIT ETC), some people wrote that it was made in the United States.

ARP 100-7725 ARP Wheel Studs | Summit Racing

Free Shipping - ARP Wheel Studs with qualifying orders of $109. Shop Wheel Studs at Summit Racing.

www.summitracing.com

 

[jerflash]

Ph i thought you were referring to the manufacturer of the hubs, my mistake. All chinese hubs are trash. ARP makes good stuff.

 

[far eastan]

I'm sorry to be confused.
That is good information.
I can buy stud bolts with confidence.
thank you.