Built to conform with and exceed all requirements stipulated in Spec. MIL-J-6193A. High axial and torsional strengths, high strength-weight ratio, no replacement during anticipated service life of aircraft on most installations, permanent lubrication. 

Temporary torsional overloads as great as 80% of rated ultimate have been handled by these universal joints without harmful binding. Temporary axial overloads ranging up to 150% in excess of rated ultimates have been imposed without binding. These characteristics insure high safety factors under the most difficult operating conditions.