Fastway Trailer Hitch Lock and Adjustment Pin Lock Set for Flash E Series Ball Mounts

Part Number: FA86-00-3660

341 Reviews | 36 Questions

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fastway trailer hitch lock standard pin and adjustment set for flash e series ball mounts

fastway trailer hitch lock standard pin fits 2 inch and adjustment set for flash e series ball mounts

fastway trailer hitch lock fits 2 inch fa86-00-3660

fastway trailer hitch lock standard pin fits 2 inch fa86-00-3660

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0 trailer hitch lock fastway fits 2 inch fa86-00-3660

0 trailer hitch lock fastway standard pin fits 2 inch and adjustment set for flash e series ball mounts

0 trailer hitch lock fastway standard pin on a vehicle

0 trailer hitch lock fastway fa86-00-3660

0 trailer hitch lock fastway standard pin and adjustment set for flash e series ball mounts

0 trailer hitch lock fastway standard pin fits 2 inch fa86-00-3660

0 trailer hitch lock fastway fits 2 inch on a vehicle

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Fastway Flash E Series Ball Mounts Lock and Adjustment Pin Review

Fastway Hitch Locks - Standard Pin Lock - FA86-00-3660 Review

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Designed for your Flash E Series ball mount, this lock set includes a 1/2" lock to replace the adjustment pin that holds the ball mount platform in place on the shank, and a 5/8" lock to secure the ball mount in your 2" receiver. Great Prices for the best trailer hitch lock from Fastway. Fastway Trailer Hitch Lock and Adjustment Pin Lock Set for Flash E Series Ball Mounts part number FA86-00-3660 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.

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Reviews (341)
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Fastway Trailer Hitch Lock - FA86-00-3660

Features:

Flush-style lock set for Fastway Flash E Series ball mounts helps prevent theft
- Hitch receiver lock is used in place of a standard hitch pin and clip to secure the shank of your ball mount in your receiver
- Locking adjustment pin is used in place of the standard adjustment pin to secure the ball mount platform to the ball mount
Sturdy and durable steel construction
- Sleek chrome-plated finish resists corrosion
Tube key lock cylinder provides better security than standard key mechanisms
- Harder to pick and resists drilling
- More difficult to duplicate keys
Weather-resistant rubber dust caps keep cylinders free from water and debris
2 Keyed-alike tube keys included

Specs:

Application: Fastway Flash E Series adjustable ball mounts (FA42-00-2400, FA42-00-2600, FA42-00-2800, and FA42-00-2900)
Hitch receiver lock:
- Pin diameter: 5/8"
- Inside pin length: 3-5/8"
- Overall pin length: 6-3/4"
Locking adjustment pin:
- Pin diameter: 1/2"
- Inside pin length: 3-7/8"
- Overall pin length: 7"
Lifetime limited warranty

86-00-3660 Fast Way Hitch Receiver Lock and Adjustment Pin Lock Set for Flash E Series Ball Mounts - 2" Hitches

Customer Satisfaction Score:

94% were satisfied with this product

6% of customers were not satisfied

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Wrong item was ordered
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6% of customers were not satisfied

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Wrong item was ordered
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4.7

341 reviews

5 Stars		(286)
4 Stars		(33)
3 Stars		(12)
2 Stars		(5)
1 Star		(5)

by: Dale 03/12/2026

Ok you asked, I'll tell you what I think. It looks good. nice shiny chrome finish. Not great, not great as the locking end of the pin wiggles around when locked. It locks, it works, but just doesn't appear to be super secure.It almost seems if you took a heavy punc and a decent hammer you could pop the lock off. Im not going to try it though.

by: Gene H. 09/01/2017 One Year Later

These worked great for my teardrop trailer "Lock & Roll" hitch. The smaller diameter pin locks the arms in place around the trailer side portion and the other locks the vehicle side into the receiver. The hitch originally came with just a pin and safety clip for the arms and even if the pin fell out the hitch would not disconnect due to it's design. Though this lock set is for an entirely different trailer hitch, it worked perfect for the Lock & Roll application. Was very happy to be able to find such a set-up.
Thanks etrailer.

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by: Greg L. 05/06/2017

I bought a very nice ball and hitch from etrailer and wanted some protection against theft. This fits the bill nicely.

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Greg L. One Year Later

5/6/2018

These do keep the hitch safe from theft but do nothing for hitch slop and wiggle so I ordered a Roadmaster Quiet hitch that took care of that problem nicely.

by: Terry 08/14/2020

I like the trim design and they look good with the hitch. The lock works smoothly. Hopeful it will remain this way after more exposure to the elements. However, I think if during machining of the lock end if there could be some kind of ridge near the lock would be good to help keep the rubber dust/water cover from coming off so easily. TH

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by: Harry 05/07/2025 One Year Later

Last year I bought a flat tow set up for my jeep and Rv E trailer delivered me a great set up Hitch. Hitch locks. Cables. Demco braking system. Base plate and plugs. Easy to install and great towing

by: Jason 06/03/2026

Fits great to help prevent casual walk by theft. Gives me a piece of mind not to worry….

by: David 12/03/2025 One Year Later

Very solid. Length and lock cover are perfect.

by: Jason I. 06/06/2017 One Year Later

The hitch adjustment pin lock has froze up after less than a year of use. The rubber cap did little to protect the lock cylinder. I would not recommend this product due to these issues. I will likely have to take my grinder with a cutoff wheel to it in order to salvage my $250 hitch.

Laura E.

6/8/2017

Thank you for your business and your review, Jason. There is likely some corrosion inside the lock that is preventing the mechanism from working properly. You can get some spray lubricant like WD-40 or PB Blaster, let it soak for 15 minutes. If this does not work, try another spray of lubricant, let it soak for another 15 minutes, and try again.

by: Tyler 08/16/2018

I gave it a three star because I believe that the pin should not be too much longer than the receiver it is going into, and this one is about an inch longer. I don't like how it has the ability to move around. Plus the lock didn't seem like it really "clicked" into place like a lock should. It is an ok product, I towed about 2 tons with it after I got it and it seemed to work fine. But given the opportunity to buy a different locking pin I would.

Heather A.

8/28/2018

The adjustment pin lock set part # FA86-00-3660 is designed for Flash E series ball mounts and a 2 1/2 inch hitch receiver opening. It sounds like you may have a 2 inch hitch receiver opening. The span of the fastway locks part FA86-00-3660 is 3 5/8 inches for the hitch receiver lock and the other locking adjustment pin has a 3 7/8 inch span. If you are looking for a lock for a 2 inch hitch with a traditional style ball mount I recommend part # DT30005. Part # DT30005 fastway locks are designed for a 2 inch hitch includes a barrel style key and has a usable span of 2 1/2 inches.

Helpful Links

Hitch-Locks/Fastway/DT30005.html

by: John N. 01/21/2019

The Fastway Trailer Hitch Lock and Adjustment Pin Lock Set, they are not of the size advertised. The specs say that they are 5/8 inch. Not true. They are smaller and allow the ball to flop around in the hitch to the point that I feel they could become a fatigued point and possibly snap when under a load and flexing.

Mike L.

1/22/2019

The locks are specifically designed to work with a Fastway ball mount. One pin is 5/8, and the other one is a 1/2 inch in diameter.

by: Scott 11/03/2025 One Year Later

Great quality, fast delivery, friendly staff

by: Stephen 04/29/2019 One Year Later

These Fastway Trailer Hitch pins/locks work as expected. Key functions well and finish is good after one year of service. The rubber protective caps are a bit poorer quality than the rest of the unit.

by: Deborah 04/05/2025

The locks worked well for Fastway trailer hitch.

by: Joseph 07/07/2022

These lock pins look great are easy to use and work very well. I have just installed them on my truck so will see how well they hold up to the weather.

Joseph One Year Later

7/8/2023

works great, still look good after a NY winter

by: Thomas 11/07/2019

The only product I could find after two years to fit my adjustable height hitch. Thanks for a quality product!

Thomas One Year Later

11/10/2020

Excellent!

by: Sean 03/13/2024 One Year Later

Works just fine. Fits as it should for my application and the lock mechanism works well. The only issue I've had with them is the rubber caps fell off all the time and I eventually lost one. I'll probably need to lube it more often as a result of the missing dust covers. It also may be more prone to freezing up in the winter. Funny how a missing $.03 part can be a problem.

Sean One Year Later

3/19/2025

Good. Lost the dust cap but otherwise it works fine.

by: Donnly H. 04/21/2017

Customer service was great. I ordered a pair of locking pins as well as an adjustable mount. Apparently, the locking pins were obsolete and I actually got a call from one of the customer service representatives asking if I wanted something different or just cancel that portion of the order. I received the order within the expected timeframe and the quality of both products was as expected. I couldn't have asked for a better experience.

by: Jeff 08/24/2020

Why invest all of that money into a E-Series ball mount and not protect your investment with anything but lockable pins? If you're doing it, do it right and get the pins. I'm glad Adam E recommended these to me.

by: Michael 08/12/2022

Worked perfect to lock my hitch ball and the smaller one locks my 5th wheel hitch and just one key!

by: Gary 09/12/2018

These locking hitch pins are just perfect. Delivery was quick and they are long enough for my hitch receiver. Thank you.

by: Robert 02/05/2019

Excellent product, perfect fit for the ball adjustment pin. Only reason for the 4 stars is that the hitch pin is a bit long. Not a deal breaker (still going to use it).

by: Steve M 04/19/2017

This is a perfect set to go with my trailer hitch. FYI the hitch pin lock fits my 3"inch receiver perfectly

by: Matthew 10/28/2019

Excellent product. The two different sizes really add to the versatility of the use. I used one of the pins for a bike hitch rack and it worked really well.

by: Philip S 04/11/2018

This etrailer is a great source for all my towing needs. Easy to find, best prices and Awesome customer service. If you make a mistake just call. They will cancel or change any order. Thank you etrailer.

by: Kenneth 12/12/2019

The 1/2 “ pin is to short for the height adjustment on the trailer hitch it won’t lock guess I’ll have to find one somewhere else

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See what our Experts say about this Fastway Trailer Hitch Lock

Do you have a question about this Trailer Hitch Lock?

Do You Have Replacement Pins for the etrailer Adjustable 2-Ball Mount e66PR?
Hey Johnny. The adjustment pins for the etrailer Adjustable 2-Ball Mount item # e66PR are not available for individual purchase. The Replacement Pins and Clips for Curt Adjustable Channel Mount Hitches item # C45925 are a bit longer but will work. If you're interested in a set of locking pins. The Fastway Trailer Hitch Lock and Adjustment Pin Lock Set for Flash E Series Ball Mounts item # FA86-00-3660 will also work and are controlled by the same key. What are you needing a set of...
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Locking Hitch Pin Recommendation for Fastway e2 Weight Distribution System
Hey Scott, for your Fastway weight distribution system the Flint Hill Goods hitch lock part # FHG63VR would work really well. It will keep your shank from getting stolen and also the lock core is weather resistant and won't corrode out in the weather.
view full answer...
Can You Find The Replacement Key Number On The Fastway Hitch Locks?
The only way to know the key number for the Fastway Trailer Hitch Lock and Adjustment Pin Lock Set # FA86-00-3660 is with the key that opens the lock. They do not mark the lock in any way as that would provide a way for thieves to easily identify the key they need to open the lock. You will need to cut the lock off to be able to remove your current pins and install a new lock set. It is recommended to write down the key number in a safe location you will be able to find it if you happen...
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What Size Locking Pin Is Needed For Fastway Flash Scale 2-Ball Mount # FA34FR?
The Flash Scale 2-Ball Mount # FA44FR uses the Fastway Trailer Hitch Lock and Adjustment Pin Lock Set # FA86-00-3660. This vertical locking pin is 1/2" in diameter with a 3-7/8" inside pin diameter.
view full answer...
Replacement Keys for Fastway Trailer Hitch Lock
It sounds like you are referring to the Fastway Trailer Hitch Lock and Adjustment Pin Lock Set # FA86-00-3660. The included keys in this hitch lock are indeed a tube/barrel style key that offers better security than standard key mechanisms. This particular locking set is designed for the Fastway Flash E Series ball mounts like # FA42-00-2600. We do have replacement keys available, if you are just looking for a spare set. You will want to locate the key number for your existing unit. For...
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Recommended Keyed Alike Locking Pins for B&W Tow and Stow Adjustable Ball Mount
Absolutely! B&W recommends the Locking Pin Kit from Infinite Rule, which we carry as part # 34061775-D. The locks are manufactured in the USA, are keyed alike and are specifically designed for the B&W Tow and Stow so they fit perfectly. The # FA86-00-3660 locking pins you'd looked at wouldn't have an inside span long enough to fit the Tow and Stow ball mount.
view full answer...
Replacement Key Needed for a Flash E Series Adjustable 2-Ball Mount
If you don't know the key number for the current lock on your Flash E Series Adjustable 2-Ball Mount # FA42-00-2600 and the previous owner doesn't know the number, you can still use the ball mount but you will need to get the current lock cut off. Once it is removed you can use the Hitch Lock and Adjustment Pin Lock Set # FA86-00-3660 to lock the ball platform AND the ball mount to deter theft.
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Replacement Keys For Fastway Trailer Hitch Lock and Adjustment Pin Lock Set # FA86-00-3660
Yes, we have the Replacement Keys # FA-KEY-320 for the Fastway Trailer Hitch Lock and Adjustment Pin Lock Set # FA86-00-3660. This will include 2 additional keys for your locks. We also have the Fastway Universal Coupler Lock # FA86-0015-320 which uses the same Fastway 320 key. This will include 2 additional keys allowing you to get the additional keys you need and have a keyed alike storage lock.
view full answer...
Recommended Adjustable Ball Mount With 2-5/16" Hitch Ball for 7,000 lb Trailer
So the answer to the exact adjustable ball mount you need really depends on the amount of rise or drop you require. If you aren't sure how to measure for that, I've added a link to a help article detailing how to determine that. With that in mind, I'll give you some options, and I also want to point out that adjustable ball mounts do come with both a 2" hitch ball and 2-5/16" hitch ball, though if you never need the 2" ball you can simply store it away. I recommend the Flash E Series...
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Locking Pins for Lock N Roll Couplers
I called Lock N Roll and they said that if you want to use locking hitch pins, then they recommend the 2 pc set from Fastway # FA86-00-3660. The hitch receiver lock diameter is 5/8" and is 6-3/4" long. The locking coupler pin is 1/2" diameter and 7" long. This set is nice since they're keyed alike, making it easier for you to use them, while providing two points of security, making it harder for thieves. Just note that these locks are a deterrent for opportunistic theft. If you want to...
view full answer...
Longest Span Hitch Pin Lock
The closest option we have available to what you are needing is the Blue Ox Trailer Hitch Receiver Lock item # BX88212. This heavy-duty lock features a 5/8" diameter and a usable length of 4-3/8". This usable length represents the longest option we have available for standard locking hitch pins. I have linked a diagram below. We do have a threaded locking pin that spans 4-1/2" but it is for a bike rack. It is the Locking Anti-Rattle, Threaded Hitch Pin for Swagman 2" Hitch Racks item # S64027.
view full answer...
Keyed Alike Locking Pin For Ball Adjustment And Hitch Pin On Fastway Ball Mount
The Fastway Flash E Series Adjustable, Aluminum Ball Mount - 2 Chrome Balls - 6" Drop, 7" Rise - 10K, # FA42-00-2600 you said you have is a fit for 2 inch hitch receivers not 2-1/2 inch hitch receivers. The Fastway Trailer Hitch Lock and Adjustment Pin Lock Set for Flash E Series Ball Mounts, # FA86-00-3660, is a fit for this hitch and its compatible 2 inch receiver opening measured inside to inside. I'm guessing that you measured the receiver from outside vs. the inside opening and this...
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Adjustable Ball Mount With 12 Inch Rise for 2 Inch Trailer Hitch Receiver
There is one adjustable ball mount that has a 12 inch rise, but a couple of others that have an 11 inch rise which you can also use and are less expensive; you just need to be within an inch of the correct rise (or drop). So here are the options for you: - 12 Inch Rise: BulletProof Hitches Adjustable 2-Ball Mount for 2" Hitch - 12" Drop/Rise # HD2012 Also needs InfiniteRule Locking Pins for BulletProof Ball Mount # 34061674-D - 11 Inch Rise: Flash E Series Adjustable 2-Ball Mount - 10"...
view full answer...
Is Pin Lock Available for Fastway Adjustable Ball Mount # FA42-00-2600
Fastway has a lock set part # FA86-00-3660 that locks the ball mount to the vehicle hitch as well as the ball mount platform to the shank of the assembly which would work great for you. Sorry to hear about losing the pin!
view full answer...
Locking Pin Option for Lock N Roll Ball Mount
We've checked with Lock N Roll in the past and while they don't offer a locking pin for the ball mount portion of the # 336VS511 they do know that the Fastway Hitch Lock part # FA86-00-3660 does fit it.
view full answer...
What Size Adjustment Pin Is Needed for the Flash E Series Adjustable Ball Mount
If one of the hitch pins you have now has a usable pin length of at least 3-7/8" then you can use it on the adjustment portion of the Flash E Series Adjustable 2-Ball Mount w Chrome Balls part # FA42-00-2600. If not then you would want to use the Fastway Trailer Hitch Lock and Adjustment Pin Lock Set part # FA86-00-3660 as it comes with keyed alike locks for both the hitch pin hole and the adjustment pin hole.
view full answer...
Can Fastway Flash 2-Ball Mount with Built-In Scale Be Used for Towing
Yes, you can use the Fastway Flash 2-Ball Mount with Built-In Scale # FA54FR! Fastway has rated this for towing up to a 10K trailer with 1K tongue weight so as long as you aren't exceeding those capacities this is more than just a fancy tongue weight scale. I also recommend securing your investment with the Lock Kit # FA86-00-3660. This locks the shank to your trailer hitch and then the ball platform to the shank so everything is secured! Attached are some review videos for you to check out.
view full answer...
Trailer Hitch Lock Recommendation for 2-1/2 Inch Hitch Fastway Adjustable Ball Mount
If you have a 2-1/2 inch adjustable ball mount like the part # DTSTBM6825-2S which has a standard pin hole for the hitch pin you would want a hitch lock like the part # e98881 which is longer and designed for the larger hitch size.
view full answer...
Recommendations for Locking Hitch Pin and Locking Adjustable Ball Mount Pin Keyed Alike
It sounds like you are talking about a lock set that includes one hitch lock and a second lock for an adjustable ball mount. We have locking pin set # FA86-00-3685 that could potentially work for you. In this set the 5/8 inch diameter hitch lock has a inside pin length of 3-5/8 inches. The adjustment pin is also 5/8 inch and has a length of 4-1/2 inches. We also have lock set # AM3492. It also includes two 5/8 inch diameter locking pins. The inside span of the hitch lock is 3-5/16 inches...
view full answer...
Best Locking Pins for the Andersen Ultimate Hitch # AM3200
Hey Sherilyn. The Fastway Trailer Hitch Lock # FA86-00-3660 will be the best fit for your Anderson Ultimate Hitch # AM3200. The minimum required inside span of a locking pin for your hitch base rails is 3-1/2" with a diameter of 1/2", this kit comes with one at 3-7/8" with the 1/2" diameter, perfect for locking the rails. The other pin in this set is a 5/8" diameter which you can use to lock the ball in place. Do you typically leave your Andersen hitch installed in the truck between trips?
view full answer...
Keyed Alike Hitch Locks for 3" and 2" Receivers
The Curt Lock Set for Adjustable Channel-Style Mounts part # C23556 will do the trick. These pins are rated as high as any hitch and ball mount will be. The Longer one has a usable length of 4.25" while the shorter is 3.25" which will be great for your 3" and 2" receivers. While it is not the typical solution it is the only keyed alike option I currently have available. (May 2020)
view full answer...
Can I Get 4 Hitch Pin Locks Keyed to the Same Key Number that are 5/8"?
Hello Kari, I do have a keyed alike option that should work for you, it works on both a 2" receiver and a 2 1/2" receiver, the etrailer Hitch Receiver Lock - Chrome # e98881, but it is only 3 5/8" span. On the product page you will need to use the drop down on the "Keyed Unique" and change it to the "Keyed Alike" so that all the locks will have the same key number, that option is located right above "Add to Cart." Are you looking for something for a 3" receiver? I am just trying to better...
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Is The Fastway Lock Set Compatible With e2 Weight Distribution Hitch?
The Fastway Trailer Hitch Lock and Adjustment Pin Lock Set # FA86-00-3660 is only compatible with the ball mount platforms like the Flash # FA42-00-2400. With the Fastway e2 weight distribution you have to use the bolts and nuts since the hitch head has an adjustable pitch angle. We do have the BulletProof Hitches 2-Ball Mount # MD204 which you can use with the Weight Distribution Shank # 358WEIGHTDIST. This will allow you to quickly adjust the hitch height for the Fastway e2 for different...
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Recommended Hitch Pin Locks that Can be Keyed Alike
Hey Kari, it looks like the Fastway Trailer Hitch Lock and Adjustment Pin Lock Set for Flash E Series Ball Mounts # FA86-00-3660 is keyed unique so you can't get them all keyed alike. Instead, I'd suggest going with the etrailer Hitch Receiver Lock for 2" and 2-1/2" Hitches # e98881. This hitch pin has a 5/8" pin diameter, has a 3 5/8" span, and can be ordered keyed alike. Since we don't have one with the span you need, this one is going to have a bit smaller span at 3 5/8" (-7/8"). Please...
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