Fulton (2-Pack) A-Frame Coupler, 2-5/16 Inch Diameter, Round Jack Hole, Bolt-On, 11,000 lbs. Capacity, SilverFulton$209.02Out of Stock
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Complete kit bundle containing all necessary components for your project. Professional-grade components designed for reliable performance and long-lasting durability.
Keywords: FL44311H0301-5PK bundle kit, complete kit, professional components, industrial kit, FL44311H0301, Fulton
Fulton has produced marine and utility trailer hardware for more than a century, and its jacks, winches and couplers are a standard for light and medium-duty trailering. The XLT and F2 series cover swivel and fixed jacks, hand and powered winches from 1,500 to 3,200 pounds, and couplers built to keep working in wet, salty conditions.
With more than a hundred years of production behind it, Fulton has become the reference point for light and medium-duty trailer hardware, particularly on the marine side. That environment is the toughest test a trailer component faces. A boat trailer is reversed into fresh or salt water on every launch and left to sit wet, which finds every weakness in plating, sealing and material choice. Fulton's stated position is that the brand performs best when the weather is at its worst, and its product engineering reflects that. It sits within the Horizon Global towing group alongside Reese, Draw-Tite, Bulldog, Tekonsha and Wesbar.
Marine and utility jacks anchor the line. The XLT Series marine jack uses a bolt-through swivel mount built from three-dimensionally formed heavy-gauge steel stampings with a proprietary bushing material, a combination chosen to minimise deflection under tongue load while keeping the swivel action working after years of exposure. The F2 Series takes corrosion resistance further as the industry's only extruded aluminium marine jack with an anodised finish, which removes the rust problem at its source rather than coating over it. The wider trailer jack range covers topwind, sidewind and drop-leg configurations.
Trailer winches pull boats onto bunks and rollers. XLT Series winches use efficient gear ratios, full-length drum bearings, oil-impregnated shaft bushings and a Comfort Grip handle that makes the last few turns under load bearable, in 1,500 and 1,800 pound capacities. F2 Series winches use an enclosed frame for a cleaner look and added protection, in 1,600, 2,000 and 3,200 pound models, including two-speed options that trade line speed for cranking effort.
Couplers complete the range, including A-frame couplers matched to common tongue sizes and load ratings, serving boat owners, utility trailer users and trailer manufacturers.
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A stamped coupler is a trailer coupling device that connects a trailer tongue to a towing vehicle's hitch ball. It secures the trailer to the vehicle and allows for coupling and uncoupling. The coupler holds the hitch ball in a ball pocket and is latched closed during towing to prevent separation.
This manual covers Class 1, 2, 3, and 4 stamped couplers. The installation method and fastener sizes vary by class: Class 1 couplers use 3/8" grade 5 bolts, while Class 2, 3, and 4 couplers use 1/2" grade 5 bolts for bolt-on installation.
Yes, but only with 50-degree A-frame trailer tongues. A-frame couplers are a separate type covered in this manual and can only be used with this specific tongue angle. Do not use A-frame couplers with other tongue angles.
Bolt-on installation uses grade 5 bolts and locknuts to secure the coupler to the trailer tongue. Weld-on installation uses fillet welds to permanently attach the coupler. Both methods require the coupler's internal stop to be butted against the end of the trailer tongue for maximum overlap. Weld-on installation requires an AWS certified welder.
For Class 1 couplers, the preferred method is to use four (4) 3/8" grade 5 bolts through the side holes. An alternate method is to use two (2) 3/8" grade 5 through bolts and locknuts, provided they can be torqued to the appropriate SAE proof load specification of 23 ft. lbs. The trailer manufacturer must specify the exact number and size of fasteners required.
For Class 2, 3, and 4 couplers, the preferred method is to use four (4) 1/2" grade 5 bolts through the side holes. An alternate method is to use two (2) 1/2" grade 5 through bolts and locknuts, provided they can be torqued to the appropriate SAE proof load specification of 55 ft. lbs. The trailer manufacturer must specify the exact number and size of fasteners required.
The adjustable height channel mounting bracket requires two (2) 5/8" x 5" grade 5 bolts with locknuts. These bolts are inserted through two sets of holes in the mounting bracket and the coupler holes. Only grade 5 hardware must be used.
A-frame couplers are bolted to the tongue members using grade 5 hardware with locknuts through the available mounting holes in the coupler housing. For couplers using 1/2" hardware, washers must be placed beneath all bolt heads and locknuts. The exact number and size of fasteners must be specified by the trailer manufacturer.
A minimum coupler/tongue overlap of 6.5 inches is required for both bolt-on and weld-on installation. The coupler's internal stop must be butted against the end of the trailer tongue to achieve maximum overlap.
Gussets are required if the trailer tongue height is 6 inches or less when using an adjustable height channel mounting bracket. The mounting bracket must be centered on the tongue and remain vertical after installation.
Yes. Before mounting the coupler, confirm that there will be no interference from the tow vehicle, tongue, ground, and any other mounted accessories while stationary or in motion. Check for interference in both open and closed positions before installing, and check again after installation is complete.
3/8" grade 5 bolts must be torqued to 23 ft. lbs. according to SAE proof load specifications.
1/2" grade 5 bolts must be torqued to 55 ft. lbs. according to SAE proof load specifications.
5/8" grade 5 bolts must be torqued to 110 ft. lbs. according to SAE proof load specifications.
The two 5/8" x 5" grade 5 bolts used with the adjustable height channel mounting bracket must be tightened to 100-110 ft. lbs.
A 1/8" minimum fillet weld is required on both sides and the top of a straight tongue coupler.
A 3/16" minimum fillet weld is required on both sides and the top of an A-frame coupler.
A 1/4" minimum fillet weld is required all around the adjustable height channel mounting bracket.
1. Block trailer wheels. 2. Align hitch ball beneath coupler ball pocket. 3. Open coupler by pulling latch trigger and lifting the locking lever. 4. Lower the coupler over the hitch ball until ball is fully seated into the ball pocket. 5. Move locking lever to the closed position. 6. Check that the latch is engaged by lifting up on back of locking lever. 7. Verify that the hitch ball is fully seated and ball clamp is below the ball. If the ball is not seated with lever in the closed position and latch engaged, DO NOT TOW. Repeat the steps.
1. Block trailer wheels. 2. Align hitch ball beneath coupler ball pocket. 3. Open coupler by (1) lifting latch, (2) raising yoke and (3) pulling back, resting it on top of coupler nose. 4. Lower the coupler over the hitch ball until ball is fully seated into ball pocket. 5. Push latch handle forward until yoke drops over coupler nose and latch handle tips enter slots on top of coupler. 6. Check that the hitch ball is fully seated and ball clamp is below the ball. If the ball is not seated with yoke in closed position and latch handle engaged, DO NOT TOW. Repeat the steps.
1. Block trailer wheels. 2. Align hitch ball beneath coupler ball pocket. 3. Open coupler locking lever by (1) lifting latch upward and (2) pulling back. 4. Lower the coupler over the hitch ball until ball is fully seated into ball pocket. 5. Move locking lever forward until latch handle tips enter slots on top of coupler. 6. Check that the hitch ball is fully seated and ball clamp is below the ball. If the ball is not seated with lever in the closed position, DO NOT TOW. Repeat the steps.
1. Block trailer wheels. 2. Open locking lever. 3. Raise trailer off of hitch ball. 4. Return handle to closed position.
Before towing, perform the following checks: (1) Check vehicle, mounting bracket, hitch, hitch ball and coupler for signs of wear or damage and that the coupler handle opens and closes freely. (2) If coupler and/or mounting bracket is deformed or damaged, replace complete coupler and mounting bracket. (3) Replace bent, broken, or worn parts before using. (4) Close coupler securely by ensuring that the hitch ball is fully seated in the coupler ball pocket and the handle or latch is in the closed position. (5) Check mounting bracket hardware for wear and proper tightness. Replace bent, broken, or worn hardware. Tighten hardware to appropriate SAE proof load specifications using only grade 5 hardware. (6) Make sure that the trailer safety chains are properly connected to the towing vehicle and trailer according to SAE J684. (7) Make sure that all trailer lighting is hooked up and working properly.
No. Do not tow if ball is not fully seated and/or coupler is not closed. The hitch ball must be fully seated in the coupler ball pocket and the coupler must be securely latched before towing.
Use caution when uncoupling as the tongue may rise suddenly due to negative tongue load. Always block the trailer wheels before uncoupling.
Weigh your trailer plus added load. Do not exceed the lesser of the mounting bracket, coupler, hitch, vehicle, ball, or trailer weight ratings (including load). Exceeding these limits may result in failure and property damage or injury.
Use only the proper ball for this coupler as indicated on the coupler body. If uncertain, contact Cequent Performance Products at 1-800-632-3290 or www.cequentgroup.com.
All welding must be performed by an AWS (American Welding Society) certified welder. Do not attempt welding unless you are certified.
Do not use the coupler. After installing the mounting bracket and/or coupler, if coupler operation has been impaired in any way, do not use it. If the coupler and/or mounting bracket is deformed or damaged, replace the complete coupler and mounting bracket.
After installation is complete, check that the coupler operation has not been impaired in any way. Do not use the coupler if its operation has been impaired. Also check for interference again after installation is complete to ensure the coupler does not interfere with the tow vehicle, tongue, ground, or any other mounted accessories in both open and closed positions.
If coupler is to be primed/painted after installation, make sure excess paint/primer buildup is removed from the ball pocket and latching mechanism. Excess buildup can impair coupler operation.
The following procedures should be performed at least annually: (1) Check welds and mounting bolt torque. (2) Grease ball pocket. (3) Oil pivot points with SAE 30 wt. motor oil. Additionally, keep the ball pocket and mechanism clean at all times. When parking or storing your trailer, keep the coupler off the ground so dirt and/or other foreign material will not build up in the coupler ball pocket.
Check welds and mounting bolt torque at least annually. Ensure bolts are tightened to the appropriate SAE proof load specifications and replace any bent, broken, or worn hardware.
Oil pivot points with SAE 30 wt. motor oil at least annually.
Yes, but only 50-degree A-frame tongues. Straight tongue couplers are also available. Verify your tongue type and angle before purchasing.
Grade 5 bolts only. Do not use any other grade. The manual specifies grade 5 for all fasteners.
3/8" bolts: 23 ft. lbs. | 1/2" bolts: 55 ft. lbs. | 5/8" bolts: 110 ft. lbs. | Adjustable height channel bolts: 100-110 ft. lbs.
No. Do not tow if the hitch ball is not fully seated or the coupler is not closed. Always verify full seating and secure latching before towing.
Only an AWS (American Welding Society) certified welder. All welding must be performed by a certified professional.
Check welds and mounting bolt torque, grease the ball pocket, and oil pivot points with SAE 30 wt. motor oil. Keep the ball pocket and mechanism clean.
If the hitch ball is not fully seated with the coupler lever in the closed position and latch engaged, DO NOT TOW. Repeat the coupling steps. Ensure the hitch ball is properly aligned beneath the coupler ball pocket before lowering the coupler. If the problem persists, check that the correct hitch ball size is being used (as indicated on the coupler body) and verify that the coupler mechanism is not damaged or impaired.
If the coupler handle does not open and close freely, check the coupler for signs of wear or damage. If the coupler is deformed or damaged, replace the complete coupler and mounting bracket. Do not attempt to use a coupler with restricted movement, as this indicates impaired operation.
Check mounting bracket hardware for wear and proper tightness before towing. If hardware is loose, tighten it to the appropriate SAE proof load specifications: 3/8" bolts to 23 ft. lbs., 1/2" bolts to 55 ft. lbs., or 5/8" bolts to 110 ft. lbs. Replace any bent, broken, or worn hardware. Use only grade 5 hardware. Check hardware tightness at least annually.
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