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Curt Pin and Clip for 2" and 2-1/2" Hitches - 5/8" Diameter x 3-3/16" Span
CURT

Curt Pin and Clip for 2" and 2-1/2" Hitches - 5/8" Diameter x 3-3/16" Span

Part Number: C21510
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$8.57
Retail:$9.44
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This 5/8" diameter pin fits 2" and 2-1/2" square receiver hitches. Includes retaining clip. Rubberized, plastic-coated ends give you a secure grip for easy installation and removal. Zinc finish resists corrosion. 1-800-940-8924 to order CURT hitch pins and clips part number C21510 or order online at etrailer.com. Free expert support on all CURT products. Great prices and Fastest Shipping for Curt Pin and Clip for 2" and 2-1/2" Hitches - 5/8" Diameter x 3-3/16" Span. Hitch Pins and Clips reviews from real customers.
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  • Reviews (2986)
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CURT Hitch Pins and Clips - C21510

  • Fits 2 Inch Hitch
  • Fits 2-1/2 Inch Hitch
  • Standard Hitch Pin
  • 5/8 Inch Diameter
  • 3-3/16 Inch Span
  • CURT

This 5/8" diameter pin fits 2" and 2-1/2" square receiver hitches. Includes retaining clip. Rubberized, plastic-coated ends give you a secure grip for easy installation and removal. Zinc finish resists corrosion.


Features:

  • Hitch pin secures ball mount or other hitch-mounted accessory in your trailer hitch receiver
    • Included clip inserts into end of pin to hold pin in place
  • Sturdy steel construction
  • Corrosion-resistant zinc-plated finish
  • Pin and clip have a rubberized, plastic-coated grip for easy installation and removal


Specs:

  • Application: 2" x 2" and 2-1/2" x 2-1/2" trailer hitch receivers
  • Pin diameter: 5/8"
  • Usable length (span): 3-3/16"
  • Overall length: 5-1/2"


21510 Curt Pin and Clip For Class III, IV and V Trailer Hitch Receiver with Rubberized Plastic Grip





Video of Curt Pin and Clip for 2" and 2-1/2" Hitches - 5/8" Diameter x 3-3/16" Span
Video Thumbnail Video Player Dialog

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




Video Transcript for Curt Pin and Clip for 2" and 2-1/2" Hitches Spec Review

Jeff: Hello everybody. This is Jeff at etrailer.com. Today, we're going to take a look at this Curt class three, class four and class five hitch pin and clip, that fits two inch and two and a half inch hitch receivers. This hitch pin is what will secure your hitch mounted accessory in your trailer hitch receiver. The pin itself has a nice heat treated steel. It's very strong and durable, has a nice sink finish on it to resist corrosion, and if you notice on the clip and on the pin, it does have plastic grips on the ends right here, and those plastic grips make it easy to install and remove.

Same way on the clip, push it in and pull it out to remove it.A few specs on this. Again, it is designed to fit two inch by two inch and two and a half inch by two and a half inch trailer hitch receivers. The pin diameter is five eighths of an inch. Overall length, if we measure from this end to this end, on the pin itself is going to be right at five and one quarter inches. And the usable length would be once we install the clip and that's from inside the clip to the spot right there where it starts to bend is going to be right at three and one eighths inches for usable length, but that should do it for the review on this Curt class three, class four and class five hitch pin and clip for the two inch and two and a half inch hitch receivers..

Customer Satisfaction Score:

Ratings & Reviews

4.8

2986 reviews
5 Stars
(2665)
4 Stars
(211)
3 Stars
(65)
2 Stars
(13)
1 Star
(32)
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This 5/8" diameter pin fits 2" and 2-1/2" square receiver hitches. Includes retaining clip. Rubberized, plastic-coated ends give you a secure grip for easy installation and removal. Zinc finish resists corrosion.

by:

Curt Pin and Clip For Class III, IV and V Trailer Hitch Receiver with Rubberized Plastic Grip perfect fit for currently 2.76 plus shipping. High quality product and great service by etrailer.com



by:

etrailer didn’t have this in stock when I ordered. I authorized them to swap it for a non-rubberized version. No issues with it at all.

Para J. profile picture

Para J.

8/21/2021

Great. No problems.



by:

The etrailer site was great!
1. Wide
variety of product selection and competitive prices
2 Web site was easy to navigate
3. Shipping for all items was completed in 5 days.
4. Everything was packaged great.
5. No incremental shipping charge

The trailer hitch that I purchased was easily installed on my 2019 Nissan Frontier. Start to finish was less than 20 minutes.



by:

Great price … easy install…. Great quality product…..have bicycle platform rack installed on it.. also have Curt 4 way wiring harness and lighting… also excellent



by:

Installation is easily done in 30 minutes in the driveway. Some maneuvering is needed to get the Curt receiver past the factory receiver mounting brackets. There is a clearance issue between the Curt receiver and a factory crossmember on both sides which can be remedied by adding a 3/4" grade 8 washer between the receiver and the frame on each side. It is easiest to torque down the four vertical bolts before installing the two horizontal ones as they interfere with getting a socket on the two rear vertical bolts. Curt did a good job eliminating all failure points (bolts) on the receiver hitch itself and the welds are solid. Overall the Curt receiver is overkill in a good way and it would be hard for even a good fabricator to design one that is stronger. Included are pictures of how it looks on a relatively tall factory height 2009 Dodge 3500 DRW with a 6" Fastway drop and 1220 pounds of tongue weight.



by:

It's a hitch pin. It does what hitch pins do. No complaints.

Big J. profile picture

Big J.

1/17/2022

Still working good after a year. Shed a little of the rubber on the hamdle but no biggie.



by:

Ordered this with a trailer hitch. It is a solid product and I'm very happy with it.

Haywad profile picture

Haywad

4/20/2022

still a solid product.



by:

I bought the trailer hitch lower kit, works very good and is solid. Bought the locking pin , easy to use and has held up in great condition. Last, I bought the load stabilizer, simple product but effective, thanks guys for being helpful and having great products



by:

The hitch pin arrived quickly and in good condition. A great product at a great price. Etrailer.com is an excellent company to deal with.

Ron C. profile picture

Ron C.

3/23/2015

Everything is still performing very well. Great products with excellent service.



by:

I'm very pleased with my purchase of the Curt trailer hitch. Self installation went fairly smooth. I'm getting a lot of use out of my hitch with my bike rack. The instructions were pretty straight forward, plus some YouTube videos helped. I would definitely recommend the Curt hitch.



by:

Be nice if it actually worked on 2 1/2” hitches the pin is a 1/4 short on my gmc to put safety pin in

Jenny N. profile picture

Jenny N.

3/31/2022

There are hitch pins that will have a longer usuable length like part # 337HP6256WC which has a 4-inch span.



by:

Good for normal trailer hook up and towing, but when trailer hitch is not used and a trailer hitch insert is used a key locking clip and pin should be used to avoid any one stealing the insert you have inserted to replace the actual towing bracket. People have told me they had to learn the hard way on getting their College emblem stolen because they used the normal pin.

Heather A. profile picture
Etrailer Expert

Heather A.

11/7/2018

If you need a locking pin I recommend part # 7683. Please keep in mind this lock will not work with double-walled hitches or some factory 2 inch trailer hitches that have an outside width wider than 2 5/8. If a longer pin length is needed, see hitch lock part # RH5-XL.



by:

High quality better than ones I've used in the past. I trust etrailer products because I know they do research on them,anything they offer is of high quality



by:

Thank you for such prompt service. I put this on my Polaris 570 mid size Ranger. The problem was a normal hitch was under the bed and a 2 inch rise was a bit too low for a level trailer. This fixed the problem moving the ball out further and higher. Much easier to hook up. I would recommend your company to others.



by:

I purchased a trailer hitch, ball mount, pin, and wiring set for my 2006 Toyota Tacoma. They were delivered promptly and in good order. With the help of the online videos, as well as the informative written directions, I completed the installation of all items in less than an afternoon and everything fit and operated as advertised. I am very pleased with the products and the excellent service. Needless to say, I highly recommend etrailer.com.

Dennis S.
Minnesota

Dennis profile picture

Dennis

10/7/2014

The hitch and pin, along with the turn signals and brake lights continue to work consistently and dependably without any problems at all. Thanks again for the excellent products and service.



by:

PERFECT!!!
AGAIN!!!



by:

Perfect fit. The coating on the pin and clip save my hands from harm



by:

We're thoroughly pleased with both Paula and our order (a tow hitch cover). The cover looks exactly the way it looks on the website!



by:

Great prices, fast delivery



by:

Just as described!



by:

This is a great match for my Curtis tow hitch. High quality and sturdy.



by:

Works very good

Timothy D. profile picture

Timothy D.

9/19/2026

I have been on five traps with it. So far it has been working great.

Heather A. profile picture
Etrailer Expert

Heather A.

9/19/2026

@TimothyD Nice! Where did you go?


by:

nice hitch pin. The rubber end is gripp y.



by:

I use this Curt hitch pin and clip when I'm using the receiver plug-even though I COULD use it with my hitch. Being an expensive hitch, I like RH5-XL when it's on my truck. The Curt is better than plain hitch pins because of the rubber on both the pin and the clip, which gives a better grip when it's cold or wet. Etrailer, as usual, got it to me fast, and the price was right. Also, I like that the clip goes through the pin instead of into a slot, making it somewhat harder for the clip to fall out or spread the legs of the clip over time-at least I think so.

Rich G. profile picture

Rich G.

4/23/2019

Still working like a champ. No rust, a little wear on the pin, but it still works like day 1.



by:

The pin is not listed correctly. According to the Curt website it is only a 3" span. It was too short for my application. I chatted with Royce from etrailer and he was supposed to email me a return form; he never did. So I guess I am stuck with a pin I cannot use.


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Info for this part was:

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