Fontaine Fifth Wheel Application


The Fontaine
Stationary Frame Mount Fifth Wheel (FMA)

More strength, less weight. Fontaine's Frame Mount Fifth Wheel is ideal for dolly applications and is offered in a wide range of mounting heights.

The Frame Mount Fifth Wheel incorporates the NO-SLACK® II standard or the 5092 heavy-duty top plates. Choose either top plate; both are built with low-alloy, high-tensile formed steel and are designed for uniform surface lubrication. A heavy-duty steel substructure provides reinforced strategic load-bearing areas and high structural integrity.

Our patented locking system automatically eliminates any fifth wheel slack and includes an integral secondary safety lock to prevent false coupling and premature trailer release. The one-piece cast saddle bearings are built with large grease grooves to ensure uniform grease flow and coverage.

So, when the job demands a safe, strong low weight fifth wheel, demand the best.Get the Fontaine Stationary Frame Mount Fifth Wheel.

Rating:Standard Duty50,000 pound vertical load
150,000 pound drawbar pull
Heavy Duty55,000 pound vertical load
150,000 pound drawbar pull
Application:Tractors requiring a stationary 5th wheel.
Mounting:A standard NO-SLACK¬ II or heavy-duty 5092 top plate is mounted on standard frame mount brackets bolted to inboard and outboard angles on the truck frame.
Construction:A high-strength low-alloy formed steel top plate with a heavy-duty steel substructure.
Warranty:Fontaine's standard five year warranty.

Stationary Frame Mount (FMA)

Model Number Description Weight (lbs)
SL6FMA63756-3/8" Mounting Height.290
SL6FMA73757-3/8" Mounting Height.298
SL6FMA83758-3/8" Mounting Height.306
SL6FMA93759-3/8" Mounting Height.314
SL6FMA1037510-3/8" Mounting Height.336


Heavy Duty Stationary Frame Mount (HFMA)

Model Number Description Weight (lbs)
SLHFMA63756-3/8" Mounting Height.346
SLHFMA73757-3/8" Mounting Height.354
SLHFMA83758-3/8" Mounting Height.362
SLHFMA93759-3/8" Mounting Height.370
SLHFMA1037510-3/8" Mounting Height.392

The above part numbers are left side opening. To order a right side opening Top Plate, change the part number from "SL" to "SR" (Example: SR6FMA6375). To order an Air Actuated Top Plate, add 6 lbs to the weight and change the part number from "SL" to "AA" (Example: AA6FMA6375). Order dash installation kit separately.

Return to Fontaine Fifth Wheel Index

This information has been provided to us by the supplier.