Front Tow Hook Bolts
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Junior User
Joined: Aug 2006
Posts: 94
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From: Chicago Burbs
Front Tow Hook Bolts
Need a definite answer to this. What kind of bolts should be used to mount the front tow hooks?
The dealer said a Grade 8 bolt and stated dealers don't carry them. Told me to go to Napa Parts.
Napa said I needed a 10.9 bolt, and also that they don't carry them, that I should try a hardware store.
3 hardware stores looked at me like I was crazy. They had no idea what a 10.9 bolt was.
HELP!
The dealer said a Grade 8 bolt and stated dealers don't carry them. Told me to go to Napa Parts.
Napa said I needed a 10.9 bolt, and also that they don't carry them, that I should try a hardware store.
3 hardware stores looked at me like I was crazy. They had no idea what a 10.9 bolt was.
HELP!
Postmaster
Joined: Aug 2004
Posts: 3,392
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From: Greenvile, SC
Try looking at http://www.mcmaster.com/ if your certain of the thread.
I know they have 10.9s. My Company uses McMaster everyday of the week just about.
Their should also be a torque spec. for these. If you don't use the OEM bolts you may have to calculate this too.
edit: I'm wondering why the dealer doesn't bother to look up the bolts and offer to order them for you since they do not stock them. The techs on the shop floor should (maybe even the parts guys) be able to look up that torque spec. too! Oh well...
I know they have 10.9s. My Company uses McMaster everyday of the week just about.
Their should also be a torque spec. for these. If you don't use the OEM bolts you may have to calculate this too.
edit: I'm wondering why the dealer doesn't bother to look up the bolts and offer to order them for you since they do not stock them. The techs on the shop floor should (maybe even the parts guys) be able to look up that torque spec. too! Oh well...
Last edited by FTE Trigger; Aug 12, 2006 at 03:43 PM.
Senior User
Joined: Oct 2002
Posts: 293
Likes: 1
From: Trempealeau Wisconsin
I have 1/2" grade 8 bolts (2 per hook) on my 94 F150 4X4 and they are still hanging there. And they have been pulled on with both chains and snap straps on quite a few times. I would say the the 8's are plenty.
Elder User
Joined: Jul 2006
Posts: 958
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From: Las Vegas, NV
Well, I have worked in construction for 38 years. A grade 8 bolt is very strong. A grade 10 bolt is extremely strong. Whenever I have a question about strength and durability of a bolt, I go with grade 10. Unless you are planning on pulling the Empire State, or the prymids outta Cairo Egypt. 
Just my smartassed observation and .02 worth. Sorry I caint spell prymids right.
Happy F-150 ing!
Just my smartassed observation and .02 worth. Sorry I caint spell prymids right. Happy F-150 ing!
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Junior User
Joined: Aug 2006
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From: Chicago Burbs
Thanks for the responses. I picked up 2 grade 8 bolts and got it all set up. I don't know how much towing or pulling I'll be doing, but I'm just a stickler when it comes to little things like this. I like to use what came with the truck.
It's an '04 FX4 btw =)
It's an '04 FX4 btw =)
Posting Guru
Joined: Jun 2002
Posts: 1,146
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From: Colorado
Originally Posted by Murk
Thanks for the responses. I picked up 2 grade 8 bolts and got it all set up. I don't know how much towing or pulling I'll be doing, but I'm just a stickler when it comes to little things like this. I like to use what came with the truck. It's an '04 FX4 btw =)
I remember an article in Quality Magazine (Quality and the Law column) many years ago about a guy using only one bolt per hook because the holes in the frame of his truck didn't match up with the mounting holes in the hook. He didn't want to drill any new holes, so he chose to use only one bolt per. While he was being pulled from some mud by a friend using a strap, the bolt on one hook sheared, and it sling-shot the hook through the friends back window and into his head. Instant Veggie. I don't recall the article mentioning the grade of bolt, or anything dealing with the hardware itself.
I hope you understand my concerns.
Elder User
Joined: Dec 2002
Posts: 559
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From: South Carolina
Grade 1-8 is a standard (US) threaded bolt, while a 10.9 is a metric bolt. There is a rough conversion between the two grading systems, but I think Grade 8 and 10.9 are equivalent.
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Junior User
Joined: Aug 2006
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From: Chicago Burbs
Originally Posted by rikfish
I hope I am miss-reading this, but you spoke of "tow hooks" in your first message, implying two (or more). In the quote above you state you picked up two grade 8 bolts. Tell me you are using two bolts per hook.....
I remember an article in Quality Magazine (Quality and the Law column) many years ago about a guy using only one bolt per hook because the holes in the frame of his truck didn't match up with the mounting holes in the hook. He didn't want to drill any new holes, so he chose to use only one bolt per. While he was being pulled from some mud by a friend using a strap, the bolt on one hook sheared, and it sling-shot the hook through the friends back window and into his head. Instant Veggie. I don't recall the article mentioning the grade of bolt, or anything dealing with the hardware itself.
I hope you understand my concerns.
I remember an article in Quality Magazine (Quality and the Law column) many years ago about a guy using only one bolt per hook because the holes in the frame of his truck didn't match up with the mounting holes in the hook. He didn't want to drill any new holes, so he chose to use only one bolt per. While he was being pulled from some mud by a friend using a strap, the bolt on one hook sheared, and it sling-shot the hook through the friends back window and into his head. Instant Veggie. I don't recall the article mentioning the grade of bolt, or anything dealing with the hardware itself.
I hope you understand my concerns.
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Joined: Mar 2003
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I was in the fastern business for 5 years and there are your standard grade that is 2 then it goes to 5 then 8. On the head of the bolt you will see marks. No marks shows that its a grade 2, 3 marks is grade 5 and 6 makrs is grade 8. In the fastern business you add 2 to the number of marks on the head of the bolt. NEVER use grade two for anything you need strength. Rull of thumb just use grade 8 if you have any question about strength. The 10.9 is metric and its graded the same way.
Freshman User
Joined: Feb 2003
Posts: 47
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From: Smithsburg, Maryland
Originally Posted by Murk
The 2 I picked up have 8.8 stamped on the top of them. They seem fine so far. Thanks again for all the info, you guys rock.
http://www.boltdepot.com/fastener-in...ade-Chart.aspx
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