For UFP Trailer Axles (not "Dexter" "Lippert" "LCI", etc, only fits "UFP" or "UFP by Dexter")
If your UFP AXLE Studs are rusted so bad you can't use them, they were lost or broken during maintenance, you can go ahead and pop these studs in as long as there are 20 threads counted in a half inch (1/2"-20) and it measures the same lengths as listed below
Features & Specifications: Finish: Grade 8 Zinc Finish Wheel Stud Overall Length: 2" (1.7" under head) Thread Length: 1" Insert Length: 1/2" Cap Diameter: 3/4" Knurl Diameter: .563" Knurl Length from 0.3" to 0.6"