Depends on how much weight your trucks rear axle/tires wheels are carrying. A single gross weight of 7420 lbs doesn't tell you much.
Trailer add just about all their hitch weight on a trucks rear axle.
RAWR which include tires/wheels and rear spring pack is you biggest concern. Stay under those rating for a legal safe tow.
Most 1/2 ton trucks come OEM with P tires which can have say a 2500 lb rating. Fed regs require P tires on a truck to be derated by dividing its capacity by 1.1.....= 2272 lbs.
If your pulling a 5th wheel trailer you need a LT C or D load range tires for better load carrying ability.
The truck stop scales should have been segmented in three platforms for a trucks front axle......another segment for the trucks rear axle and a 3rd segment for the trailers axles.