0.25" Head Width; Female, Right Hand Thread, Stud

0.25" Bore; 0.25" Head Width; Female, Right Hand Thread, Stud

0.3125" Bore; 0.312" Head Width; Female, Right Hand Thread, Stud

0.312" Head Width; Female, Right Hand Thread, Stud

0.375" Bore; 0.359" Head Width; Female, Right Hand Thread, Stud

0.375" Bore; 0.359" Head Width; Female, Right Hand Thread, Stud

0.4375" Bore; 0.406" Head Width; Female, Right Hand Thread, Stud

0.4375" Bore; 0.406" Head Width; Female, Right Hand Thread, Stud