Automotive & Towing Locks

Wherever you go, Master Lock protects you. Protect your boat, camper, or ATV with a Master Lock trailer hitch lock.

Trusted Strength

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Category

Best Used For

Keying Type

Environment

Indoors

Outdoors

Severe Use

Body Material

ABS Plastic

Aluminum

Brass

Hardened Steel

Heavy Steel

Metal

Polyester

Solid Steel

Stainless Steel

Steel

Steel & Zinc

Thermoplastic

Thermoplastic Elastomer

Vinyl

Vinyl & Polyester

Zinc

Shackle Material

Shackle Length

Shackle Width

Shackle Diameter

Lock Body Width

( )

0 in ( )

1 1/4 in ( )

1 3/16 in ( )

1 5/8 in ( )

1 9/16 in ( )

1 in ( )

1.894 in ( )

2 1/4 in ( )

2-7/8 in ( )

3/4 in ( )

5.31 in ( )

.55 in (14 mm)

3/4 in (19 mm)

1-7/8 in (19 mm)

13/16 in (21 mm)

7/8 in (22 mm)

1 in (25 mm)

1-1/8 in (29 mm)

1-1/2 in (29 mm)

1-5/32 in (29 mm)

1-3/16 in (30 mm)

1 3/16 in (30 mm)

1 1/4 in (32 mm)

1-1/4 in (32 mm)

1-3/8 in (35 mm)

1 5/16 in (35 mm)

1 3/8 in (35 mm)

1- 3/8 in (35 mm)

1- 5/16 in (35 mm)

1 3/8 in (36 mm)

1-1/2 in (38 mm)

1 -1/2 in (38 mm)

2-1/8 in (38 mm)

1-9/16 in (40 mm)

1 -9/16 in (40 mm)

(42 mm)

1-3/4 in (44 mm)

12.2 in (44 mm)

1-29/32 in (47 mm)

1-29/332 in (47 mm)

1-7/8 in (48 mm)

1 -7/8 in (48 mm)

1 -/78 in (48 mm)

1 7/8 in (48 mm)

1-15/16 in (49 mm)

1 -15/16 in (49 mm)

2 in (51 mm)

(51 mm)

1-13/32 in (51 mm)

2-1/8 in (54 mm)

2 -1/8 in (54 mm)

2-3/16 in (56 mm)

2 7/32 in (56 mm)

2-7/32 in (56 mm)

2-1/4 in (57 mm)

2-5/16 in (59 mm)

2-3/8 in (60 mm)

0.65 in (61 mm)

2 3/8 in (61 mm)

2-7/16 in (62 mm)

2-1/2 in (64 mm)

2 1/2 in (64 mm)

2-5/8 in (67 mm)

2.71 in (69 mm)

2-3/4 in (70 mm)

2-7/8 in (73 mm)

3 in (76 mm)

3 in (76 mm)

3-1/8 in (79 mm)

3-1/4 in (83 mm)

3 5/16 in (84 mm)

4.0 in (101 mm)

4.5 in (115 mm)

(21 cm)

11.8 in (30 cm)

12-1/8 in (308 mm)

1 3/8 in (3.1 cm)

(34 cm)

16.9 in (43 cm)

(46 cm)

2-7/8 in (7.2 cm)

(73 cm)

3-1/8 in (7.9 cm)

7.4 in (18.8 cm)

9 17/32 in (24.2 cm)

10.0 in (25.4 cm)

11.8 in (30.0 cm)

(41.9 cm)

3 3/4 in (95.25 mm)

13.8 in (35.01 cm)

Color

Pack Quantity

Multipack

Single Pack

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Product Support

Reset & Retrieve Lost Combinations

Set-your-own combination instructions, combination reset, lost combination help

Lost Keys & Key Replacements

Replace keys, replace locks, key duplication

Product Maintenance & Replacements

Lock maintenance, warranty information, part replacements

School Locker Locks

Combination charts, lock service, lock replacements

Bluetooth & Electronic Lock Support

Bluetooth locks & lock boxes, padlock service

Vault Support

Adding & removing users, app support, lock settings

Door Locks & Hardware

Replacement parts, commercial door lock service, residential hardware support

Product Support

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