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  1. Hitch Pins and Clips
  2. CURT
  3. Snapper Pin
  4. 5/16 Inch Diameter
  5. 2 Inch Long
  6. 2 Inch Span
Curt Coupler Safety Pin - 12" Chain - 5/16" Pin - Zinc Finish

Curt Coupler Safety Pin - 12" Chain - 5/16" Pin - Zinc Finish

Item # C25034
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Shipping Weight: 0.16 lbs
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This coupler safety pin by Curt has a 5/16" diameter, a useable length of 2", and a zinc finish. Comes with 12" chain. Quick connect and disconnect feature makes it easy to use and the double wire mechanism keeps it secure during use. 1-800-496-5010 to order CURT hitch pins and clips part number C25034 or order online at Free expert support on all CURT products. Guaranteed Lowest Price and Fastest Shipping for Curt Coupler Safety Pin - 12" Chain - 5/16" Pin - Zinc Finish. Hitch Pins and Clips reviews from real customers.
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  • Reviews (37)
  • Q & A (0)
  • Videos (2)
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CURT Hitch Pins and Clips - C25034

  • Snapper Pin
  • 5/16 Inch Diameter
  • 2 Inch Long
  • 2 Inch Span
  • CURT

This coupler safety pin by Curt has a 5/16" diameter, a useable length of 2", and a zinc finish. Comes with 12" chain. Quick connect and disconnect feature makes it easy to use and the double wire mechanism keeps it secure during use.


  • Trailer coupler safety pin secures your coupler so you can safely tow your trailer
    • Can also be used to secure casters and jack wheels
  • Zinc finish provides corrosion resistance
  • 5/16" Diameter pin with latch
  • Useable length: 2"
  • Includes 12" chain

25034 Curt Coupler Safety Pin - 12" Chain - 5/16" Pin - Zinc Finish

Video of Curt Coupler Safety Pin - 12" Chain - 5/16" Pin - Zinc Finish

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Curt Coupler Safety Pin Review

Hey guys, it's Randy here at Today we've got the CURT coupler pin with chain that we're going to take a look at. Now, these pins are designed for use with couplers with a five-sixteenth-inch hole, easily slide through there, and they've got a spring mechanism on them that's going to hold them in place, so we won't have to worry about them falling off.Now, this is one of many applications this can be used for. The usable space for our pin is going to be right at two inches. So, inside of our keeper here, if you've got a five-sixteenth-inch diameter hole and two inches of space there, this is going to work out really well.The thing I really like about this particular set up is the chain. Very often I see these misplaced, maybe they don't get put in, they get left on top of the toolbox, we wind up losing them.

In this case, anytime our trailers unhooked, we can just store that right there along side of it, and we won't have to worry about misplacing it. When we're ready for use, simply slide it in, latch it closed, and we're ready to travel.The chain itself is going to be a total of 12-inches long. That should allow you to get it mounted on any existing hole location or if you're creating your new one, that will give you plenty of options in range of where you can mount it. Also, the finish that we have on the chain, our pin and our spring keeper is going to be a clear zinc. That should minimize corrosion, give us years of good service, especially with the chain attached, we're not going to lose it.Now, when comparing these to other coupler pins out there, there are several options available that don't have a chain attached.

If you're in the habit of losing them, I think this is a good idea. On the other end of the spectrum, if you're looking for additional security, we have coupler pins like this you can actually slide a lock on. So, you're able to secure your trailer to that ball mount and ensure nobody can separate it.Now, to get our pin installed, we'll either reuse an existing hole if we already had a tether-style pin, or we'll want to drill a hole. I've drilled just a small hole here. We're going to be using a bolt with a lock nut on it.

You could also use a self-tapping screw. It doesn't hold a whole lot of weight. It's not something that needs to be super structural, it just needs to ensure that our chain doesn't come off.So, I'll bring my screw down through there. Get it in the hole, attach it to and then just tighten it down. At that point, to install it on our coupler, we need to release our spring, slide the pin through, and re-engage it.

At that point, you're going to be ready to head down the road and you're going to ensure that your coupler is not going to come unlatched or whatever you've secured with the clip, you're not going to have to worry about it coming undone.And that will complete our look at the CURT coupler safety pin with 12-inch chain.

Customer Reviews

Curt Coupler Safety Pin - 12" Chain - 5/16" Pin - Zinc Finish - C25034

Average Customer Rating:  4.9 out of 5 stars   (37 Customer Reviews)

This coupler safety pin by Curt has a 5/16" diameter, a useable length of 2", and a zinc finish. Comes with 12" chain. Quick connect and disconnect feature makes it easy to use and the double wire mechanism keeps it secure during use.


the coupler safety pins are ideal for the Marines , they have chains & stay on trailers


Great product, hopefully never loose my hitch pin again!!!

A year later, still have my hitch pin. Works as it should, chrome plating still intact. Good buy!!!
Adrian H - 09/06/2021


I just used an existing bolt I the trailer to attach. No more losing pins.


Bought these to keep my ramps in place when they are stowed on my trailer. Perfect. The chain keep me from losing them. Decent quality, no corrosion after a year.


Awesome Product still going strong after a year of abuse on a construction Site.

etrailer has the best selection and service on the web!


Both products I ordered came well packed,fine condition, and ,man, they got here in a rush! Ordered 1 day ,got them 3 days later. And one of the days was on a weekend. Everything I expect from an "e" company is surpassed by etrailer.


have used and resale several of their products, everything is of high quality, fast shipping, they are eager to answer any questions we may have


Exactly what we needed. Thanks etrailer. Best products great prices fast delivery!


I've ordered from etrailer several times now. Great products, prices, service and always delivered promptly on time. Five stars.


Does a great job and the chain keeps it where it is needed. Big improvement over the 1/4" bolt and nut I was getting by with.


Etrailer makes my job easier with great items and good prices! Easy to find and fast ship!


Just as described. Fast shipping and great tracking information and follow up


Great product . Great business.


Works just like a safety pin should!!


Still loving it. No issues at all. Thanks again for a great experience! !


Awesome service! This company had exactly what I needed at a good price. I would buy from them again and I would recommend them to anyone. I got the product very quickly.


Excellent product, very good service


Quick turn a round time. Items where as described. Reasonable price


No issues


Order arrived on time. Fast shipping


This is exactly what I was looking for and I have already installed and they fit perfect.



all the items looks great! thank you

by: 03/22/2021


Great product. Would recommend

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Info for this part was:

Employee Laura H
Written by:
Laura H
Employee Randy B
Installed by:
Randy B
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Zach D
Video by:
Zach D

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