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Open Roads Forum  >  Travel Trailers  >  General Q&A

 > Trailer hitch pin

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Trackrig

Spent the summer in Conconuly, Wa, MH now in Vanco

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Posted: 01/10/21 10:29pm Link  |  Quote  |  Print  |  Notify Moderator

When you insert a hitch into the receiver, you secure it with the hitch pin. Considering receivers and and balls are rated for different weights, has anyone ever seen a rating on a hitch pin? And has anyone ever broken or sheared a hitch pin?

Bill


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afidel

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Posted: 01/10/21 10:50pm Link  |  Quote  |  Print  |  Notify Moderator

Standard hitch pin is rated for 19,000+ pounds, no bumper pull RV is even close as far as I've seen. etrailer had the question asked and two different manufacturers said they've never bothered to get them tested because everything around the pin is significantly lower and so will break first. If you're using a pintle hitch on a dump trailer and think the pin might be the weak link go for a grade 8 bolt instead, that'll get you 90k pounds of sheer strength =)


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Grit dog

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Posted: 01/11/21 01:10am Link  |  Quote  |  Print  |  Notify Moderator

90klbs? Your math is off by orders of magnitude.
Shear strengths of mild steel is similar and shear on a 5/8 bolt is about 18-19kips.
Given they’re in double shear, min shear strength is >36kips.
I’d be surprised if anyone has ever seen one sheared in normal use or even in an incident.


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IB853347201

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Posted: 01/11/21 08:05am Link  |  Quote  |  Print  |  Notify Moderator

Most hitch pins and locking hitch pins are rated by class, just like the hitch which provides the weight rating.

Guy Roan

Florida

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Posted: 01/11/21 08:34am Link  |  Quote  |  Print  |  Notify Moderator

My worry has never been the hitch pin, but I always have worried about the safety pin that holds the hitch pin from sliding out.

Guy

Old-Biscuit

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Posted: 01/11/21 08:54am Link  |  Quote  |  Print  |  Notify Moderator

Guy Roan wrote:

My worry has never been the hitch pin, but I always have worried about the safety pin that holds the hitch pin from sliding out.

Guy


There is virtually no side load/pressure that would cause clip to fail

Operator error 9not installing it correctly) ------ YES


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Gdetrailer

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Posted: 01/11/21 09:23am Link  |  Quote  |  Print  |  Notify Moderator

Old-Biscuit wrote:

Guy Roan wrote:

My worry has never been the hitch pin, but I always have worried about the safety pin that holds the hitch pin from sliding out.

Guy


There is virtually no side load/pressure that would cause clip to fail

Operator error 9not installing it correctly) ------ YES


May not just be an "Operator error" if the clip "disappears" via a third party "prankster" that happens along when you are away from your vehicle..

Have heard of that happening, fortunately have never had that happen to me.. But I do typically do a quick walk around and check to make sure everything is in it's proper place as it should be when taking rest stops and such before I get back on the road..

As far as strength of the hitch pin goes, don't know exactly, but the same diameter pin is used for 2x2 and 2.5x2.5 hitches.. Just the length of the pin is longer for the 2.5 hitches.. Can't say for sure on the 3x3 hitches but I suspect most likely the same diameter to allow compatibility for using an smaller hitch accessory like a bike rack or lighter weight hitch via adapter sleeves.

Boomerweps

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Posted: 01/11/21 09:47am Link  |  Quote  |  Print  |  Notify Moderator

The old 1 & 1/4” hitches used a thinner pin.


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Mickeyfan0805

SE Wisconsin

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Posted: 01/11/21 10:24am Link  |  Quote  |  Print  |  Notify Moderator

Gdetrailer wrote:



May not just be an "Operator error" if the clip "disappears" via a third party "prankster" that happens along when you are away from your vehicle..

Have heard of that happening, fortunately have never had that happen to me.. But I do typically do a quick walk around and check to make sure everything is in it's proper place as it should be when taking rest stops and such before I get back on the road..


Happened to me about 5.5 years ago. Had everything set the night before an early departure. Truck was attached to the trailer with the tongue jack down just enough to release the weight from the hitch. In the morning I simply raised the hitch and left. Little did I know that someone decided that pulling my pin would be a funny 'joke.' As I crested a small hill on the way out of the campground early the next morning, the stinger slid right out of the hitch and the tongue came crashing to the ground.

NOT a funny joke, but it was my bad for not checking things in the morning. Luckily the sound and the scare were much worse than the real damage. Chocked the tires, jacked up the tongue, reconnected, and moved on.

Never happened in 5 years of towing before that, and would likely never happen again. Still, I now double-check ever point of the connection after every stop!

afidel

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Posted: 01/11/21 10:53am Link  |  Quote  |  Print  |  Notify Moderator

I've seen video of it being done to semi drivers after another driver was upset over some slight on the road. That's why experienced drivers do a tug test, better to have it crash on the truck than all the way to the ground, much easier to get the landing gear deployed.

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