caliper bracket to abutment thread size

Reply Subscribe

Thread Tools

Search this Thread

Apr 3, 2010 | 03:10 PM

Bowtie_Aaron

Thread Starter

Launching!

iTrader: (3)

Joined: Feb 2004

Posts: 229

Likes: 0

From: Walnutport, PA

caliper bracket to abutment thread size

Hey guys,

Im finishing up an LS1 Fbody rear disk swap on my chevelle, and i need to know what the thread size is for the rear caliper bracket to pad abutment.

this is the part that bolts to the backing plate and houses the pads, then the caliper fastens to that.

is it an M10x1.5? i tried a 7/16-14 bolt, and it fits sloppy, so im assuming that its metric, and possibly M10?

it would be the thread size for the two outer most holes...

thanks

aaron

Apr 4, 2010 | 11:11 AM

wssix99

Save the manuals!

iTrader: (5)

Joined: Dec 2007

Posts: 12,969

Likes: 389

From: Chicago, IL

Its a metric, high strength, washer head, hex bolt. You can get them from the dealer. Given that these bolts take all of the stress of braking, I wouldn't trust any other hardware.

While you have that off, you can to go RMS Auto Parts and get new rubber boots for the parking brake levers. (They are the only supplier any one has been able to find.)

Apr 4, 2010 | 11:26 AM

Bowtie_Aaron

Thread Starter

Launching!

iTrader: (3)

Joined: Feb 2004

Posts: 229

Likes: 0

From: Walnutport, PA

cool,
you dont know the thread size though do you?

thanks man!

aaron

Apr 4, 2010 | 01:48 PM

wssix99

Save the manuals!

iTrader: (5)

Joined: Dec 2007

Posts: 12,969

Likes: 389

From: Chicago, IL

On the late model LS1 F-Body, the bolt specs are:

For the REAR -
GM Part Number: 10229606 (Rear caliper bracket bolt)
Description: Metric Heavy Hex Flange Screw
Measurement: M12 X 28 X 1.75
Manufacturer: BBC Fastners
Ultimate Strength: 100 kgf/mm2
Yield Strength: 90 kgf/mm2

If anyone looks at this later and wants the FRONT (They are different)-
GM Part Number: 18023646 (Front caliper bracket bolt)
Description: Metric Hex Cap Screw
Measurement: M12 X 35 X 1.75
Manufacturer: MNP Manufacturing Corp.
Ultimate Strength: 100 kgf/mm2
Yield Strength: 90 kgf/mm2

Apr 4, 2010 | 02:25 PM

Bowtie_Aaron

Thread Starter

Launching!

iTrader: (3)

Joined: Feb 2004

Posts: 229

Likes: 0

From: Walnutport, PA

Thanks guys!!!

Aaron

Oct 27, 2013 | 10:16 AM

Jeff Smith

TECH Resident

iTrader: (44)

Joined: Jul 2005

Posts: 954

Likes: 5

From: Tail of the Dragon's

Do Fastenal store have it?

Quote:

Originally Posted by wssix99

Oct 27, 2013 | 02:55 PM

wssix99

Save the manuals!

iTrader: (5)

Joined: Dec 2007

Posts: 12,969

Likes: 389

From: Chicago, IL

Quote:

Originally Posted by Jeff Smith

Do Fastenal store have it?

Not when I looked. You can get them from any GM dealership and they aren't too expensive. (They are on par for what Fastenal would gouge you for on a special bolt.)

Reply Subscribe