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Boat Trailer Axles

Boat Trailer Axles are available in both Square Galvanized and Round Painted Steel Tubing. Each style of axle is more ideal for different boat trailer environments. In addition, Each type of boat trailer axle is available in many lengths and capacities. Typically the 2 x 2 Galvanized Axles are used with Boat Trailers spending most of their useful life in Saltwater environments, while the Painted Steel 2 3/8" Round Axles would be used in mostly Freshwater Environments. The Two Main differences between these axles would be the Shape and the Construction. The Square Shape of the Galvanized Axle requires using 2" Square U-Bolts to Mount it to your trailers leaf springs, while the Round Painted Steel axle requires 2 3/8" Round U-Bolts for mounting to your leaf springs. 

Boat Trailer Trailer Axles are not necessarily Brand Name Specific. For instance, you don't have to replace your current Galvanized Trailer Axle on your Magic Tilt, Continental, Ez Loader, or any other brand named trailer, with their brand galvanized trailer axle. Essentially, the most important factors to replace your current axle are carrying capacity and length. Boat Trailer Axles are mounted to your leaf springs using U-Bolts that are specific for the axle dimension and leaf spring size you are using. When purchasing a new axle, it would be ideal to also purchase the correct U-Bolt Kit for that axle. For Questions of How to Measure your trailer axle, refer to the "How To Measure Your Axle" Tab on the top of your screen, this will guide you through all the correct measurements needed to get a proper replacement axle for your trailer. 
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Trailer Axle Zinc Plated Cotter Key 1/8
Item Sku: 101031
MPN: N/A

Secures Axle Castle Nuts through hole in the spindle

Great for 2200lb, 3500lb, 5200lb, 6000lb, and 7,000lb Axles

Simply stick through and bend in place
Trailer Axle Zinc Plated Cotter Zey
$0.56
In Stock
Trailer Axle Round Washer for 1
Item Sku: 100886
MPN: N/A

Round Washer for Spindles with Cotter Key and Castle Nut

Fits on Spindles for 2200lb, 3500lb, 5200lb, 6000lb, and 7000lb Axles

Fits most Brands of Axles
Spindle Washer for Trailer Axle Spindle to Secure Bearings
Sale
$0.69  $0.58
In Stock
Trailer Axle Tang Washer for 1
Item Sku: 100884
MPN: N/A

Tang Washer for Axles with Flat Spot and Castle Nut

Features two tabs for securing into Castle Nut

Fits most Brands of Axles
1" D Style Tang Washer with Bendable Flap
Sale
$0.80  $0.50
In Stock
Trailer Axle D Washer for 1
Item Sku: 100885
MPN: N/A

D Washer for Axles with Flat Spot and Castle Nut

Used with Tang Washer and Castle Nut

Fits most Brands of Axles
D Washer for Trailer Axle Spindle to Secure Bearings
Sale
$0.94  $0.64
In Stock
Trailer Axle D Washer for 8,000-9,000lb Axles with 1
Item Sku: 143700
MPN:

1" Inner Diameter

Fits 7k-8k Accu Lube Axles

D Style Washer
D Washer for 7k-8k AccuLube Trailer Axles
$2.15
Out of Stock
2 3/8 inch Spring Seat Weld On for 3,500lb Round Boat Trailer Axles
Item Sku: 143308
MPN: N/A

For 3500lb Painted Steel Axles 2 3/8" Diameter

Weld On installation

Raw Steel Finish Can be Painted to Match your Trailers
2 3/8" Round Trailer Axle Spring Seat
Sale
$2.41  $1.52
In Stock
Trailer Axle Castle Nut 1
Item Sku: 141620
MPN:

Castle Nut for Galvanized and Painted Steel Axles

Screws on Spindles for 2200lb, 3500lb, 5200lb, 6000lb, and 7000lb Axles

Fits most Brands of Axles
Trailer Axle Spindle Castle Style Nut 12 Slot for 1 inch Standard Spindles
$2.48
In Stock
Trailer Axle Castle Nut 7/8 inch UNC for Trailer Equalizer Bars
Item Sku: 143499
MPN:

7/8 - 9 Coarse Thread Trailer Castle Nut

Steel Construction

Fits 7/8" diameter trailer bolts
Trailer Axle Spindle Castle Style Nut for 7/8" Bolts.
Sale
$3.06  $1.93
In Stock
Trailer Axle Spindle Nut 1
Item Sku: 100975
MPN: N/A

Spindle Nut for Galvanized and Painted Steel Axles

Screws on Spindles for 2200lb, 3500lb, 5200lb, 6000lb, and 7000lb Axles

Fits most Brands of Axles
Trailer Axle Spindle Castle Style Nut for 1 inch Spindles
$3.11
In Stock
Trailer Replacement Zerk Grease Fitting for Dexter Galvanized Axles
Item Sku: 143681
MPN: 61-7

Threaded installation

Replacement Zerk Fitting

Fits 2,000-3,500lb Dexter Galvanized Axles
Threaded Grease Fitting for Dexter Axles
$3.30
In Stock
Trailer Axle Castle Nut 1
Item Sku: 100883
MPN: N/A

Castle Nut for Galvanized and Painted Steel Axles

Screws on Spindles for 2200lb, 3500lb, 5200lb, 6000lb, and 7000lb Axles

Fits most Brands of Axles
Trailer Axle Spindle Castle Style Nut for 1 inch Spindles
$3.32
In Stock
Trailer Axle Castle Nut 7/8 inch UNF for Trailer Equalizer Bars
Item Sku: 143497
MPN:

7/8 - 14 Fine Thread Trailer Castle Nut

Steel Construction

Fits 7/8" diameter trailer bolts
Trailer Axle Spindle Castle Style Nut for 7/8" Bolts.
Sale
$3.69  $2.44
In Stock
Trailer Axle Tang Washer for 1 1/2
Item Sku: 143520
MPN: N/A

1 1/2" Tang Washer

Used on 9k - 10k axles

- B Style Tang Washer
1.5" B Style Tang Washer
$3.88
In Stock
(PAIR) 2 3/8 inch Round Axle Spring Seat Weld On for 3500lb Trailer Axle
Item Sku: 100358
MPN: N/A

For 3500lb Painted Steel Axles 2 3/8" Diameter

Can be Welded in Place

Raw Steel Finish Can be Painted to Match your Trailers
Trailer axle spring seat
$3.90
In Stock
Trailer Axle Castle Nut 3/4 inch for Trailer Spindles
Item Sku: 143328
MPN:

Trailer Axle 3/4 inch castle nut

Raw steel castle nut

Requires a Cotter Key and Spindle Washer
Trailer Axle Spindle Castle Style Nut for 3/4 inch Spindles
$4.05
In Stock
Galvanized Steel Square Trailer Axle Spring Seat for 2 in Square Axles - Bolt On
Item Sku: 143292
MPN:

Galvanized

Fits 2" Square Boat Trailer Axles

No Welding Required
Trailer Axle Galvanized Spring Seat for 2 inch Square Axle
$4.28
Out of Stock
Trailer Axle Spindle Nut 13/16
Item Sku: 143696
MPN:

13/16" - 20 Trailer Spindle Nut

for use on 13/16" 'round' Style Trailer Spindles

Not for use with cotter pins
Spindle Nut for 13/16" 'D' Style Trailer Spindles
$5.50
In Stock
3 inch Spring Seat Weld On for 6,000lb - 7,000lb Round Trailer Axles
Item Sku: 143253
MPN: N/A

For 6000-7000lb Painted Steel Axles 3" Diameter

Weld On installation

Raw Steel Finish Can be Painted to Match your Trailers
3 Inch Round Trailer axle Spring Seat
$5.56
Out of Stock
Trailer Spindle Retainer Nut Cage for 13/16
Item Sku: 143578
MPN:

for 13/16" Trailer Spindles

Retainer Cage locks spindle hardware in position

Trailer Spindle Nut Cage 13/16" Spindles
$5.94
In Stock
Trailer Spindle Nut Cage for Galvanized Trailer Axles
Item Sku: 100970
MPN: N/A

Spindle Nut Cage for Dexter Galvanized Axles

Use Spindle Nut Cage with Spindle Nut, and D Washer

Fits 2200lb and 3500lb Dexter Galvanized Axles
Locking Cage for Dexter Galvanized Axles
$7.51
In Stock
Galvanized U-Shaped Boat Trailer Spring Seat for 2 in Square Axles - Bolt On
Item Sku: 143274
MPN: N/A

Galvanized U type Spring Seat

Fits 2" Square Boat Trailer Axles

No Welding Required
Trailer Axle Galvanized Spring Seat for 2 inch Square Axle
$10.99
In Stock
Trailer Axle Spindle for 3,500 lb #84 Axle Weld On 1 1/2 inch Square
Item Sku: 143378
MPN:

Weld-on square butt end measures 1 1/2 inch Diameter x 4 inch Length

1 1/16" (44649 bearing) x 1 3/8" (68149 bearing) combination

1.72" Inner Diameter seal surface
Weld On 3,500 lb 1 1/2" Square Trailer Axle Spindle
$12.12
Out of Stock
Trailer Axle Spindle For 3500 lb Axle  #84 1.5 inch Square
Item Sku: 101132
MPN: SP20484M

Uses 1 3/8" (68149) x 1 1/16" (44649) Bearings

Uses Grease Seal with 1.72" ID

Weld in Spindle with 1.5 inch Square Stub
Weld in trailer Spindle for 1 1/16 and 1 3/8 Wheel Bearings
$13.89
Item is out of stock
Trailer Axle Spindle for 3,500 lb #84 Axle Butt Weld with Brake Flange
Item Sku: 143734
MPN:

Butt Weld Spindle Fits into 2 3/8 inch diameter tubing

1 1/16" (44649 bearing) x 1 3/8" (68149 bearing) combination

1.72" Inner Diameter seal surface
3,500 lb Butt Weld Trailer Axle Spindle with Brake Flange
$18.06
In Stock
Trailer Spindle for 2,000 lb BT8 Axle Weld On 1 1/4 inch Round
Item Sku: 143259
MPN:

Weld-on butt end measures 1 1/4 inch diameter x 3 3/4 inch Length

Spindle Measures 8 3/4 inches overall

1" (44643 bearing) x 1" (44643 bearing) combination
Weld On 2,000 lb 1 1/4" Trailer Axle Spindle 44649 (1") Bearings
$19.78
Out of Stock
Trailer Spindle For 3500 lb Axle #84 Weld On 1 7/16 inch Round with Brake Flange
Item Sku: 141558
MPN:

Uses 1 3/8" (68149) x 1 1/16" (44649) Bearings

Uses Grease Seal with 1.72" ID

Weld in Spindle with 1 7/16 inch Round Stub and Brake Flange
Weld in Trailer Spindle for 1 1/16 and 1 3/8 Wheel Bearings with Brake Flange
$36.04
In Stock
Trailer Axle Spindle BT16 For 1 1/16
Item Sku: 101148
MPN: 98848

Weld In Trailer spindle For 2K trailer Axles
$40.16
In Stock
Trailer Axle Spindle For 3500 lb Axle #84 Weld On 1 1/2 inch Round
Item Sku: 141579
MPN:

Uses 1 3/8" (68149) x 1 1/16" (44649) Bearings

Uses Grease Seal with 1.72" ID

Weld in Spindle with 1.5 inch Round Stub
Weld in Trailer Spindle for 1 1/16 and 1 3/8 Wheel Bearings
Sale
$42.30  $27.92
In Stock
Trailer Spindle For 3500 lb Axle #84 Weld On 1 1/2 inch Round with Brake Flange
Item Sku: 141559
MPN:

Uses 1 3/8" (68149) x 1 1/16" (44649) Bearings

Uses Grease Seal with 1.72" ID

Weld in Spindle with 1.5 inch Round Stub and Brake Flange
Weld in Trailer Spindle for 1 1/16 and 1 3/8 Wheel Bearings with Brake Flange
$42.30
Item is out of stock
Trailer Spindle for 3,500 lb #84 Axle Weld On 1 3/4 inch Round with Brake Flange
Item Sku: 143401
MPN:

Weld-on butt end measures 1 3/4 inch diameter x 2 5/8 inch Length

1 1/16" (44649 bearing) x 1 3/8" (68149 bearing) combination

1.72" Inner Diameter seal surface
Weld On 3,500 lb 1 3/4" Trailer Axle Spindle with Brake Flange
$42.64
Out of Stock
Trailer Axle Spindle For 3500 lb Axle #84 Drop Axle Style
Item Sku: 101133
MPN: R30684

Uses 1 3/8" (68149) x 1 1/16" (44649) Bearings

Uses Grease Seal with 1.72" ID

Weld in Spindle with Drop Axle Stub
Weld in trailer Spindle for 1 1/16 and 1 3/8 Wheel Bearings
$54.33
In Stock
Trailer Spindle For 3500 lb Axle  #84 2 inch Round
Item Sku: 101130
MPN: R30684

Uses 1 3/8" (68149) x 1 1/16" (44649) Bearings

Uses Grease Seal with 1.72" ID

Weld in Spindle with 2 inch Round Stub
Weld in trailer Spindle for 1 1/16 and 1 3/8 Wheel Bearings
Sale
$70.18  $44.21
In Stock
Tie Down Engineering Spindle for 3500lb Torsion Axles #84 Spindle
Item Sku: 100889
MPN: N/A

Uses Wheels Bearings 1 3/8" (68149) x 1 1/16" (44649)

Mounts 5 Lug 3500lb Trailer Hubs

Includes Castle Nuts, Washers and Cotter Pins
Replacement Tie Down Engineering Spindle for 3500lb Removable Torsion
$72.95
In Stock
Weld In Trailer Axle Spindle #42 For 6 Lug and 8 Lug Axles
Item Sku: 101149
MPN: 98852

Uses 1 3/4" (25580) x 1 1/4" (15123) Bearings

Uses Grease Seal with 2 1/4" ID

Weld in Spindle with 2 inch Round Stub
Replacement trailer spindles 1 1/4" x 1 3/4" Spindle #42
$79.96
In Stock
Trailer Axle Spindle For 3500 lb Axle  #84 1.5 inch Round
Item Sku: 101131
MPN: R20484-1.5-AL

Uses 1 3/8" (68149) x 1 1/16" (44649) Bearings

Uses Grease Seal with 1.72" ID

Weld in Spindle with 1.5 inch Round Stub
Weld in trailer Spindle for 1 1/16 and 1 3/8 Wheel Bearings
Sale
$80.79  $64.63
In Stock
Tie Down Engineering Spindle for 5200lb Torsion Axles #42 Spindle
Item Sku: 100890
MPN: N/A

Uses Wheels Bearings 1 3/4" (25520) x 1 1/4" (15123)

Mounts 6 Lug 5200lb Trailer Hubs

Includes Castle Nuts, Washers and Cotter Pins
Replacement Tie Down Engineering Spindle for 5200lb Removable Torsion
$90.82
In Stock
Weld-In Trailer Spindle #42 6 Lug and 8 Lug Hubs with 5 Hole Flange
Item Sku: 141587
MPN:

Uses 1 3/4" (25580) x 1 1/4" (15123/14125A) Bearings

Uses Grease Seal with 2 1/4" ID

Weld in Spindle with 2 1/4 inch Round Stub and Brake Flange
Trailer Spindle Replacement 1 1/4" x 1 3/4" Spindle #42 6 or 8 Lug with Brake Flange
$91.11
item is out of stock
2,000 lb Capacity Round Steel Trailer Axle 57 in Hub Face 46 in Spring Center
Item Sku: 101045
MPN: N/A

62 inch Overall Length Tip to Tip

Accu Lube Easy to Grease Spindle with Grease Fitting

Uses Cotter Key and Castle Nut (Included)
2,000 lb Capacity Steel Round trailer Axle 57 inch Hub Face Adjustable Spring Seats
$133.33
Item is out of stock
2,000 lb Capacity Round Steel Trailer Axle 62 inch Hub Face Painted
Item Sku: 101047
MPN: N/A

67 inch Overall Length Tip to Tip

Accu Lube Easy to Grease Spindle with Grease Fitting

Uses Cotter Key and Castle Nut (Included)
2,000 lb Capacity Steel Round trailer Axle 62 inch Hub Face Adjustable Spring Seats
$133.33
Item is out of stock
2,000 lb Capacity Round Steel Trailer Axle 65 inch Hub Face Painted
Item Sku: 101048
MPN: N/A

70 inch Overall Length Tip to Tip

Accu Lube Easy to Grease Spindle with Grease Fitting

Uses Cotter Key and Castle Nut (Included)
2,000 lb Capacity Steel Round trailer Axle 65 inch Hub Face Adjustable Spring Seats
$133.33
Item is out of stock
2,000 lb Capacity Round Steel Trailer Axle 66 in Hub Face 55 in Spring Center
Item Sku: 101049
MPN: N/A

71 inch Overall Length Tip to Tip

Accu Lube Easy to Grease Spindle with Grease Fitting

Uses Cotter Key and Castle Nut (Included)
2,000 lb Capacity Steel Round trailer Axle 66 inch Hub Face Adjustable Spring Seats
$133.33
Item is out of stock
2,000 lb Capacity Round Steel Trailer Axle 70 in Hub Face 58 in Spring Center
Item Sku: 101051
MPN: N/A

75 inch Overall Length Tip to Tip

Accu Lube Easy to Grease Spindle with Grease Fitting

Uses Cotter Key and Castle Nut (Included)
2,000 lb Capacity Steel Round trailer Axle 70 inch Hub Face Adjustable Spring Seats
$133.33
Item is out of stock
2,000 lb Capacity Round Steel Trailer Axle 73 in Hub Face 58 in Spring Center
Item Sku: 101053
MPN: N/A

78 inch Overall Length Tip to Tip

Accu Lube Easy to Grease Spindle with Grease Fitting

Uses Cotter Key and Castle Nut (Included)
2,000 lb Capacity Steel Round trailer Axle 73 inch Hub Face Adjustable Spring Seats
$133.33
Item is out of stock
Trailer Axle Painted Steel 3,500lb, 85 in Hub Face–70 in Spring Seat
Item Sku: 100332
MPN: AX358570C

90 inch Overall Length Tip to Tip

Accu Lube Easy to Grease Spindle with Grease Fitting

Uses Cotter Key and Castle Nut (Included)
Painted black steel 3,500lb trailer axle
$200.00
Out of Stock
Trailer Axle Painted Steel ,3,500lb,73in Hub Face - 58in Spring Seat
Item Sku: 100335
MPN: AX35-7358

78 inch Overall Length Tip to Tip

Accu Lube Easy to Grease Spindle with Grease Fitting

Uses Cotter Key and Castle Nut (Included)
Painted black steel 3,500lb trailer axle
$200.00
Out of Stock
Trailer Axle Painted Steel 3,500lb, 87 in Hub Face - 70 in Spring Seat
Item Sku: 100337
MPN: AX358770C

92 inch Overall Length Tip to Tip

Accu Lube Easy to Grease Spindle with Grease Fitting

Uses Cotter Key and Castle Nut (Included)
Painted black steel 3,500lb Capacity trailer axle
$200.00
This item is out of stock
Trailer Axle Painted Steel 3,500lb, 87 in Hub Face - 72 in Spring Seat
Item Sku: 100338
MPN: AX358772C

92 inch Overall Length Tip to Tip

Accu Lube Easy to Grease Spindle with Grease Fitting

Uses Cotter Key and Castle Nut (Included)
Painted black steel 3,500 lb Capacity trailer axle
$200.00
This item is out of stock
Trailer Axle Painted Steel 3,500lb, 89 in Hub Face - 74 in Spring Seat
Item Sku: 100339
MPN: AX358974C

94 inch Overall Length Tip to Tip

Accu Lube Easy to Grease Spindle with Grease Fitting

Uses Cotter Key and Castle Nut (Included)
Painted black steel 3,500 lb Capacity trailer axle
$200.00
Out of Stock
Trailer Axle Painted Steel 3,500lb,73 Hub Face-Adjustable Spring Seats
Item Sku: 100345
MPN: AX35-7300

78 inch Overall Length Tip to Tip

Accu Lube Easy to Grease Spindle with Grease Fitting

Uses Cotter Key and Castle Nut (Included)
Painted black steel 3,500lb trailer axle
$200.00
Item is out of stock
Trailer Axle Painted Steel 3,500lb,75 Hub Face-Adjustable Spring Seats
Item Sku: 100346
MPN: AX35-7500

80 inch Overall Length Tip to Tip

Accu Lube Easy to Grease Spindle with Grease Fitting

Uses Cotter Key and Castle Nut (Included)
Painted black steel 3,500lb Capacity Utility Trailer Axle
$200.00
Item is out of stock
 
 
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