Bronco bolts

[ex_nyer]

Didn't Johnny Cash do a song about this?
[/QUOTE]

I LOVE IT!

I got it one piece at a time and it didn't cost me a dime
You'll know it's me when I come through your town
I'm gonna ride around in style, I'm gonna drive everybody wild 'Cause I'll have the only one there is around

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[ex_nyer]

I went to one of the Think Ford First events a few months ago. Got a carabineer, the hat, and 11,000 ford pass reward points.
[/QUOTE]

Me too!

 

[Razorbak86]

The female holes are typically not pre-tapped. The "bolts" are thread forming screws. The form the threads as they are installed.

Thanks for the info, Bill.

Would that explain the markings on the threads in the enlarged photo that I posted?

Any other feedback or clarification you can provide to the overall topic would be appreciated. Thanks.

 

[Silver-Bolt]

Thanks for the info, Bill.

Would that explain the markings on the threads in the enlarged photo that I posted?

Any other feedback or clarification you can provide to the overall topic would be appreciated. Thanks.

100% does. The wear on the lead thread is the thread forming screw getting a "bite" into the untapped hole. If you look closely at the screw body it is likely not round. They are actually trilobular (triangle) shaped. That shape is what forms the threads.

 

[Razorbak86]

100% does. The wear on the lead thread is the thread forming screw getting a "bite" into the untapped hole. If you look closely at the screw body it is likely not round. They are actually trilobular (triangle) shaped. That shape is what forms the threads.

Thanks for the clarification!

One of the benefits of a forum like this is the ability to crowd-source information gathering and debate possible interpretations for the benefit of the entire group. Sometimes it involves speculation and gets a little messy, but hopefully it generates some useful information as the thread unfolds.

Any other information you can provide would be greatly appreciated.

 

[flip]

W721180-S450B BOLT, M8X30. Modular bumper wing bolts and brush bar. 22 needed or 22 in a pack or??? $18.00

Could not find the trail sight or grab handle bolts in the cat. and was to lazy to go through every page. A lot of parts have numbers but do not price which means not available right meow.

 

[DasQball]

W721180-S450B BOLT, M8X30. Modular bumper wing bolts and brush bar. 22 needed or 22 in a pack or??? $18.00

Could not find the trail sight or grab handle bolts in the cat. and was to lazy to go through every page. A lot of parts have numbers but do not price which means not available right meow.

Do I look like a cat to you, boy? Am I jumpin' around all nimbly bimbly from tree to tree?

 

[Razorbak86]

W721180-S450B BOLT, M8X30. Modular bumper wing bolts and brush bar. 22 needed or 22 in a pack or??? $18.00

Could not find the trail sight or grab handle bolts in the cat. and was to lazy to go through every page. A lot of parts have numbers but do not price which means not available right meow.

Thanks for confirming the part number (W721180-S450B) and size (M8x30), Phil.

Just for clarity, is that part HB3 on the diagram?

 

[flip]

Thanks for confirming the part number (W721180-S450B) and size (M8x30), Phil.

Just for clarity, is that part HB3 on the diagram?

Yes

 

[DasQball]

https://www.bronco6g.com/forum/thre...products-for-the-new-bronco.17772/post-643527

Link to Bronco Manual in pdf version is embedded in that thread.

I finally have a reason to go to the hardware store tonight. I'll remember to take them with me and check them against the measurements on the wall.

 

[DasQball]

Alright, the moment you've been waiting for...
The little bolt appears to be M6x20
The bigger bolt appears to be M8x30

 

[North7]

Alright, the moment you've been waiting for...
The little bolt appears to be M6x20
The bigger bolt appears to be M8x30

Excellent, can you try next to get an accurate length measurement of the thread section of the bolts, in mm if possible?

 

[swooshdave]

Excellent, can you try next to get an accurate length measurement of the thread section of the bolts, in mm if possible?

Bottom of the head to the end of the threads.

 

[broadicustomworks]

Alright, the moment you've been waiting for...
The little bolt appears to be M6x20
The bigger bolt appears to be M8x30

Good to hear. Two very common automotive thread pitch/sizes.
Allows for stainless fasteners as well after the fact, which I am a huge fan of.

 

[Silver-Bolt]

Good to hear. Two very common automotive thread pitch/sizes.
Allows for stainless fasteners as well after the fact, which I am a huge fan of.

Be careful swapping in stainless. The stainless may be substantially weaker than the steel parts. Unless you know the material and heat treat on these bolts I wouldn't do it unless the application is purely cosmetic (trim parts, etc). If the application is anything remotely structural or safety related don't do it. 300-series (302-304 typical fastener materials) also known as 18-8 has a strength that roughly equates to a Grade-5 bolt strength. The "Bronco" bolts potentially could have a strength rating at a Grade-8 or higher level. Without either doing destructive testing or having the manufacturer's print you won't know. Also very possible that the Bronco bolts are simply low carbon steel in which case the stainless would be a strength upgrade.

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