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This is a set of 8 keyed alike trailer coupler/tongue locks and is ideal when needing multiple locks that utilize ONLY one key. The universal trailer coupler lock fits 1-7/8in 48mm, 2in 51mm and most 2-5/16in 59mm couplers by Reese, Putnam, Hammerblow, Shelby, Atwood, Fulton, Dutton, Valley, Lainson, and UFP.
Zinc alloys offer high strengths to 60, plastics, crimping and riveting operations. Impact resistance is significantly higher than cast aluminium alloys, 000 psi and superior elongation for strong designs and formability for bending, and grey cast iron. This simple design is difficult to defeat because when it's locked on the trailer the lock rests on top of the coupler see image thus thwarting blunt force from downward hammer strikes. Each lock weighs 2. 4 lbs.



Keeping the coupler lock in your pocket or vehicle anywhere that is fine. Please verify dimension and length of the pin you want before purchasing our coupler hitch lock pin.
Coupler locking hitch pin's Application: Tow Trailer Boat RV Truck Car. If you have any question after receiving or using our trailer tongue lock, your problem will be solved within 24 HOURS. Small size for easy carrying.

5" x 2. 5". Keyed alike - come with 6 keys, 4 locks utilize one key, same key works on all pieces, no need to have multiple keys cluttering up your keychain. Heavy duty lock - solid hardened steel lock with power coat finish provide great corrosion protection, to help protect your trailer from theft.

Total trailer security Keyed Alike - One key opens all five 5 locks. Coupler lock fits 1-7/8", 2" & 2-5/16" couplers. For 2-5/16 couplers the better lock set is: Master Lock - 5 Trailer Locks Keyed Alike 5KA-37940-3.

Three 3 high security 6230KA padlocks. See description below for latch lock #37 applications. Coupler lock fits 1-7/8", 2", & 2-5/16" couplers. Multiple 6ka trailer lock packages can be keyed alike.

Before purchase, to get a great fit of the hitch lock pin. Push lock design make easy to use - 6 tubular keyed alike keys making it easier to lock and unlock, 1/4 turn lock and push lock design, easy to operate, watertight dust rubber cap prevents locking mechanism internal corrosion.3
Different unit package has different key codes, will be NOT keyed alike. This lock does not fit curt channel style adjustable ball mounts 45900, 45908. Caution: r spring clip cotter pin MUST be inserted into pin hole when use this lock. Remark: if you need 4 or more than 4 locks keyed alike, please choose 79630 and give the quantity. Extra long pin fits 2" and 2.

Quality serviceif you have any problems or questions, please don't hesitate to contact us via message. Contains 6 identical keysfor your convenience, 6 identical keys are included with this trailer hitch lock.
Universal fit ratchet design is adjustable with 11 locking positions and fits 1-7/8”, 2”, and 2-5/16” couplers. We will reply and give you the best solution within 24 hours.

We can key multiple sets to the same key number. The lock features the new push to Lock Security. Sleeve on - works best with hasps. Solid brass lock cylinder and aluminum cylinder case offer extreme corrosion resistance.
Aluminum diecast finish resists rust and corrosion. The latch lock features an Armored Gaurd Shackle that prevents bolt cutter attacks. However for the larger 2-5/16" couplers we prefer the 379KA coupler lock - search 3KA-379. 5/8 diameter pin fits 2in receiver tubes, Class III/IV. Latch padlock features: for proper fitment please check/read the see more product details below in product description. Look for Latch padlock features.
1. Master Lock
#ad
8 Keyed Alike Universal Trailer Coupler Locks 379KA-8, Master Lock
#adMaster Lock #ad - And is simple to install and remove. Each lock comes with two keys, therefore you will receive a total of sixteen keys with the purchase of this 8 pack. Rekeyable cylinder for keyed alike convenience with an advanced locking mechanism that resists picking and prying.This is a set of 8 keyed alike trailer coupler/tongue locks and is ideal when needing multiple locks that utilize ONLY one key. The universal trailer coupler lock fits 1-7/8in 48mm, 2in 51mm and most 2-5/16in 59mm couplers by Reese, Putnam, Hammerblow, Shelby, Atwood, Fulton, Dutton, Valley, Lainson, and UFP.
More information #ad
In stock with a delivery time of 1 to 5 days. Made with reinforced zinc die-cast resists rust and corrosion. Few materials provide the strength and toughness of zinc alloys. Zinc alloys offer high strengths to 60, plastics, crimping and riveting operations. Impact resistance is significantly higher than cast aluminium alloys, 000 psi and superior elongation for strong designs and formability for bending, and grey cast iron. This simple design is difficult to defeat because when it's locked on the trailer the lock rests on top of the coupler see image thus thwarting blunt force from downward hammer strikes. Each lock weighs 2. 4 lbs.
Brand | Master Lock #ad |
Manufacturer | Master Lock #ad |
Part Number | 379KA-8 |
Model | 379KA-8 |
More information #ad
2. Master Lock
#ad
Master Lock, 6 Trailer Locks Keyed Alike 6KA-37937-37
#adMaster Lock #ad - Multiple 6ka trailer lock packages can be keyed alike. For 2-5/16 couplers the better lock set is: Master Lock - 6 Trailer Locks Keyed Alike 6KA-37937-3. Latch lock doesn't fit some 2-5/16" couplers. In stock with a delivery time of 1 to 5 business days.More information #ad
If you ordered a quanity of 2, 3 etc we would automatically key them all the same. Each lock comes with two keys, for a total of twelve keys. Total trailer security Keyed Alike - One key opens all six locks. Coupler lock fits 1-7/8", 2" & 2-5/16" couplers. See description below for latch lock #37 applications.Brand | Master Lock #ad |
Manufacturer | Master Lock #ad |
Height | 1 Inches |
Length | 1 Inches |
Weight | 1 Pounds |
Width | 1 Inches |
Part Number | 6KA-37937-37 |
Model | 6KA-37937-37 |
More information #ad
3. Master Lock
#ad
Coupler Lock, Receiver Lock and Latch Lock, 3 Components Keyed Alike, Master Lock 3895DAT
#adMaster Lock #ad - The limited lifetime Warranty provides peace of mind from a brand you can trust. 1 coupler lock, 1 receiver lock & 1 latch lock all keyed alike; 1 key opens all 3 locks.More information #ad
For more detailed information, please click "See More Product Details". Complete trailer security system KEYED ALIKE. This lock set can not be keyed alike with other locks nor can 2 of these lock sets be keyed alike.Brand | Master Lock #ad |
Manufacturer | Master Lock #ad |
Height | 3.5 Inches |
Length | 9 Inches |
Width | 6.25 Inches |
Part Number | 3895DAT |
Model | 3895DAT |
Warranty | MASTER LOCK PRODUCT WARRANTY: Limited Lifetime Warranty. Master Lock Company LLC (Master Lock) grants the following warranty: If this product or any part of the product fails due to a defect in materials or workmanship at any time during the life of the product, Master Lock will, at its own discretion, repair or replace the product or part free of charge. Simply contact Master Lock at www.masterlock.com or 1.800.464.2088 for instructions on obtaining repair or replacement. |
More information #ad
4. CZC AUTO
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Black, CZC AUTO Black Trailer Hitch Coupler Lock, 3/4 Inch Span for Tow Boat RV Truck Car's Coupler 2 Pack keyed Alike, Dia 1/4 Inch
#adCZC AUTO #ad - How to operate our trailer tongue Coupler Lock: Spinning the flat key 5-7 times to open or close the hitch lock. Czc auto trailer hitch coupler locking pin design:1/4 inch diameter tongue lock pin with effective length 3/4 Inch.Keeping the coupler lock in your pocket or vehicle anywhere that is fine. Please verify dimension and length of the pin you want before purchasing our coupler hitch lock pin.
More information #ad
The hitch lock is coated with black electrophoretic paint to prevent corrosion. Security of our coupler locking pin: this trailer lock is made of high-strength steel to deter theft. Czc auto - a reliable brand in hitch sercurity industry: we offer 30-day money-back guarantee for any reason, please contact us, 12-month warranty for quality-related issues. Coupler locking hitch pin's Application: Tow Trailer Boat RV Truck Car. If you have any question after receiving or using our trailer tongue lock, your problem will be solved within 24 HOURS. Small size for easy carrying.
Brand | CZC AUTO #ad |
Manufacturer | CZC AUTO #ad |
Part Number | 11410 S |
More information #ad
5. WHSSFINE
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WHSSFINE Trailer Lock Kit Keyed Alike Coupler Lock Tongue and Hitch Receiver Lock with 5/8 and 1/2 Inch Pins Fit Class I II III IV V Receiver to Secure Trailer for Towing and Storage
#adWHSSFINE #ad - Trailer hitch lock - 1/2" and 5/8" hitch pin lock set for class i, 2" x 2", and class v receivers - 1. 25" x 1. 25", class iv, class iii, class II, and 2.5" x 2. 5". Keyed alike - come with 6 keys, 4 locks utilize one key, same key works on all pieces, no need to have multiple keys cluttering up your keychain. Heavy duty lock - solid hardened steel lock with power coat finish provide great corrosion protection, to help protect your trailer from theft.
More information #ad
Trailer coupler ball lock - ratchet design is adjustable with 11 locking positions and fits 1-7/8”, 2”, and 2-5/16” couplers. Trailer coupler tongue lock - padlock style with a 1/4-inch diameter pin, this trailer coupler lock fits latch-type couplers with a maximum span of up to 3/4 inches.Brand | WHSSFINE #ad |
Manufacturer | WHSSFINE #ad |
Part Number | NYN-TCS-4PCS |
More information #ad
6. Master Lock
#ad
5 Trailer Locks Keyed Alike #5KA-37940-37, Master Lock
#adMaster Lock #ad - Round padlocks 2-3/4" 70mm wide laminated stainless steel body resists corrosion. Latch lock doesn't fit some 2-5/16" couplers.Total trailer security Keyed Alike - One key opens all five 5 locks. Coupler lock fits 1-7/8", 2" & 2-5/16" couplers. For 2-5/16 couplers the better lock set is: Master Lock - 5 Trailer Locks Keyed Alike 5KA-37940-3.
More information #ad
See description below for latch lock #37 applications. If you ordered a quanity of 2, 3 etc we would automatically key them all the same. Multiple 5ka trailer lock packages can be keyed alike. In stock with a delivery time of 1 to 5 business days.Brand | Master Lock #ad |
Manufacturer | Master Lock #ad |
Part Number | 5KA-37940-37 |
Model | 5KA-37940-37 |
More information #ad
7. Master Lock
#ad
Master Lock, 6 Trailer Locks Keyed Alike #6KA-3796230-37
#adMaster Lock #ad - Latch lock doesn't fit some 2-5/16" couplers. For 2-5/16 couplers the better lock set is: master Lock - 6 Trailer Locks Keyed Alike #6KA-3796230-3.Three 3 high security 6230KA padlocks. See description below for latch lock #37 applications. Coupler lock fits 1-7/8", 2", & 2-5/16" couplers. Multiple 6ka trailer lock packages can be keyed alike.
More information #ad
Total trailer security keyed alike - One key opens all six locks. Each lock comes with two keys, for a total of twelve keys. If you ordered a quanity of 2, 3 etc we would automatically key them all the same. See description below for latch lock #37 applications.Brand | Master Lock #ad |
Manufacturer | Master Lock #ad |
Height | 1 Inches |
Length | 1 Inches |
Width | 1 Inches |
Part Number | 6KA-3796230-37 |
Model | 6KA-3796230-37 |
More information #ad
8. TowWorks
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TowWorks 79633 Keyed Alike 5/8" Trailer Hitch Lock Set with Extra Long 3-1/4" Span, Double Safety Tow Hitch Receiver Locking Pin for Class III IV Hitches with 2" and 2.5" Receivers, 3-Pack
#adTowWorks #ad - Spring clip cotter pin provides additional safety - a separate spring clip cotter pin provides additional safety, can use the locking pin with or without the lock mechanism. Rubber o rings keep rattles down - rubber o rings prevent any rattling and hold the hitch pin still.Before purchase, to get a great fit of the hitch lock pin. Push lock design make easy to use - 6 tubular keyed alike keys making it easier to lock and unlock, 1/4 turn lock and push lock design, easy to operate, watertight dust rubber cap prevents locking mechanism internal corrosion.3
More information #ad
3 locks keyed alike: this item 79633 each unit package includes 3 locks with 6 keys all keyed alike. This lock does not fit andersen Rapid Hitch kits and FASTWAY adjustable ball mounts. Different brand hitches may have a little different hitch tube size, please adjust O ring quantity or remove O ring to fit the receivers. Different unit package has different key codes, will be NOT keyed alike. This lock does not fit curt channel style adjustable ball mounts 45900, 45908. Caution: r spring clip cotter pin MUST be inserted into pin hole when use this lock. Remark: if you need 4 or more than 4 locks keyed alike, please choose 79630 and give the quantity. Extra long pin fits 2" and 2.
Brand | TowWorks #ad |
Manufacturer | TowWorks #ad |
Part Number | 79633 |
Model | 79633 |
Warranty | One-Year warranty on lock finish, lifetime warranty on lock function. |
More information #ad
9. Turnart
#ad
Trailer Lock Set, Heavy-Duty Steel, Trailer Tongue Lock, 2", 2 Pack,Hitch Lock, 2-5/16" Couplers, Universal Size Fits 1-7/8", Adjustable, Turnart Trailer Hitch Lock Keyed Alike, Trailer Coupler Lock
#adTurnart #ad - You can keep the spare keys in a discrete location for emergencies or give it to a friend for helpful access. Highly visibleuse of a bright, deterrent yellow color offers durable, highly visible protection for trailers.Quality serviceif you have any problems or questions, please don't hesitate to contact us via message. Contains 6 identical keysfor your convenience, 6 identical keys are included with this trailer hitch lock.
More information #ad
Dependable securityto protect your trailer from theft, this trailer lock is made with an aluminum body and high-strength steel construction, strong cut and shear resistance. Watertight & resists rust and corrosionthe internal components of this hitch lock can easily be protected from the elements with the included watertight dust cap, while the entire hitch lock is shielded against corrosion with a durable powder coat finish. Universal fit ratchet design is adjustable with 11 locking positions and fits 1-7/8”, 2”, and 2-5/16” couplers. We will reply and give you the best solution within 24 hours.
Brand | Turnart #ad |
Manufacturer | Turnart #ad |
Part Number | TSY-002-1 |
More information #ad
10. Master Lock
#ad
3 Trailer Locks Keyed Alike #3KA-377-37, Master Lock
#adMaster Lock #ad - Complete trailer security. Stainless Steel for ultimate corrosion resistance. Water tight cap protects lock. Receiver lock 1480ka features: protects from theft when securing the ball mount to the receiver. A removable, and revolving case-hardened steel shackle sleeve resists cutting/sawing.We can key multiple sets to the same key number. The lock features the new push to Lock Security. Sleeve on - works best with hasps. Solid brass lock cylinder and aluminum cylinder case offer extreme corrosion resistance.
More information #ad
In stock with a delivery time of 2 to 4 days via usps priority mail. Please check/read the see more produCT DETAILS below for important receiver lock fitment information. Aluminum diecast finish resists rust and corrosion. The latch lock features an Armored Gaurd Shackle that prevents bolt cutter attacks. However for the larger 2-5/16" couplers we prefer the 379KA coupler lock - search 3KA-379. 5/8 diameter pin fits 2in receiver tubes, Class III/IV. Latch padlock features: for proper fitment please check/read the see more product details below in product description. Look for Latch padlock features.
Brand | Master Lock #ad |
Manufacturer | Master Lock #ad |
Height | 1 Inches |
Length | 1 Inches |
Weight | 1 Pounds |
Width | 1 Inches |
Part Number | 3KA-377-37 |
Model | 3KA-377-37 |
Warranty | MASTER LOCK PRODUCT WARRANTY: Limited Lifetime Warranty. Master Lock Company LLC (Master Lock) grants the following warranty: If this product or any part of the product fails due to a defect in materials or workmanship at any time during the life of the product, Master Lock will, at its own discretion, repair or replace the product or part free of charge. Simply contact Master Lock at www.masterlock.com or 1.800.464.2088 for instructions on obtaining repair or replacement. |
More information #ad