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 > How many times can you torque bolts on a hitch?

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mapguy

Puget Sound

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Posted: 03/19/20 07:51am Link  |  Quote  |  Print  |  Notify Moderator

Technically you can't buy a Grade 8 bolt in a metric size. I suggest you look for Class 8.8 minimum but think you would be better served with a Class 10.9 bolt. You probably will have to go to a real hardware store or a bolt supplier.

Belmetric is a quality online
business that has a wide range of metric bolts

Curly2001

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Posted: 03/19/20 08:05am Link  |  Quote  |  Print  |  Notify Moderator

I will check to see if the directions say after the first 500 miles and let you know.
Curly


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Curly2001

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Posted: 03/19/20 08:09am Link  |  Quote  |  Print  |  Notify Moderator

Just checked the instructions again and it says check torque after the initial 500 miles and at 1,000 miles thereafter. Not too happy about every 1,000 miles. Will order a new set of bolts and go from there. The new trucks are a real pain due to the bed height. I have to tow a little nose high now to keep the bed rail clearance.
Curly

Cummins12V98

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Posted: 03/19/20 08:59am Link  |  Quote  |  Print  |  Notify Moderator

Curly2001 wrote:

Just checked the instructions again and it says check torque after the initial 500 miles and at 1,000 miles thereafter. Not too happy about every 1,000 miles. Will order a new set of bolts and go from there. The new trucks are a real pain due to the bed height. I have to tow a little nose high now to keep the bed rail clearance.
Curly


Order? As in from CURT or somewhere you can get a higher quality bolt like mentioned above.


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Curly2001

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Posted: 03/19/20 09:03am Link  |  Quote  |  Print  |  Notify Moderator

Will go to the local nut and bolt shop where they specialize in hardware. Large industrial supplier here in town.

FlatBroke

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Posted: 03/19/20 09:04am Link  |  Quote  |  Print  |  Notify Moderator

Most bolts in an engine are torqued. The engine heats and cools thousands of times. How often do you re-torque those bolts?



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Cummins12V98

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Posted: 03/19/20 09:08am Link  |  Quote  |  Print  |  Notify Moderator

mapguy wrote:

Technically you can't buy a Grade 8 bolt in a metric size. I suggest you look for Class 8.8 minimum but think you would be better served with a Class 10.9 bolt. You probably will have to go to a real hardware store or a bolt supplier.

Belmetric is a quality online
business that has a wide range of metric bolts


So what grade would you compare the CURT bolt to?

Curly2001

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Posted: 03/19/20 10:25am Link  |  Quote  |  Print  |  Notify Moderator

Gotta let the professional bolt guys compare and recommend replacements. These thread in a cast A arm that pins into the rails.
Curly

Cummins12V98

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Posted: 03/19/20 11:22am Link  |  Quote  |  Print  |  Notify Moderator

Curly2001 wrote:

Gotta let the professional bolt guys compare and recommend replacements. These thread in a cast A arm that pins into the rails.
Curly


Take a bolt to a commercial bolt/hardware supplier and get a better grade.

mapguy

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Posted: 03/19/20 01:07pm Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

mapguy wrote:

Technically you can't buy a Grade 8 bolt in a metric size. I suggest you look for Class 8.8 minimum but think you would be better served with a Class 10.9 bolt. You probably will have to go to a real hardware store or a bolt supplier.

Belmetric is a quality online
business that has a wide range of metric bolts


So what grade would you compare the CURT bolt to?


Can't tell what the marking is on the bolt head in picture. IF 8.8 -this is a class 8.8 bolt. Class 10.9 would be marked "10.9".

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