The strength applied by one man is enough for a good connection. Excessive strength might cause damage and breaking risk in the pin thread.

2.1/4” x 3.1/4” 7 API
Code	Opening	Weight (Kg)	Weight (lbs)
05.222.AC.000.000	3.1/2”	120	264

2.3/4” x 3.3/4” 7 API
Code	Opening	Weight (Kg)	Weight (lbs)
07.222.AC.000.000	4”	160	352

3.1/4” x 4.1/4” 7 API
Code	Opening	Weight (Kg)	Weight (lbs)
09.222.AC.000.000	5”	175	385