
Bolt Torque Values Class 150
Torque Values ASME B16.5 Raised Face Flanges with A193 Grade B7 Bolts


| 
 Nom Pipe Size (inches)  | 
 No. of Bolts  | 
 Size of Bolts (inches)  | 
 Internal Pressure (psig)  | 
 Minimum Torque (ft. lbs.)  | 
 Preferred Torque (ft. lbs.)  | 
| 
 1/2  | 
 4  | 
 1/2  | 
 300  | 
 9  | 
 28  | 
| 
 3/4  | 
 4  | 
 1/2  | 
 300  | 
 13  | 
 40  | 
| 
 1  | 
 4  | 
 1/2  | 
 300  | 
 17  | 
 53  | 
| 
 1-1/4  | 
 4  | 
 1/2  | 
 300  | 
 26  | 
 60  | 
| 
 1-1/2  | 
 4  | 
 1/2  | 
 300  | 
 35  | 
 60  | 
| 
 2  | 
 4  | 
 5/8  | 
 300  | 
 69  | 
 120  | 
| 
 2-1/2  | 
 4  | 
 5/8  | 
 300  | 
 81  | 
 120  | 
| 
 3  | 
 4  | 
 5/8  | 
 300  | 
 119  | 
 120  | 
| 
 3-1/2  | 
 8  | 
 5/8  | 
 300  | 
 66  | 
 120  | 
| 
 4  | 
 8  | 
 5/8  | 
 300  | 
 84  | 
 120  | 
| 
 5  | 
 8  | 
 3/4  | 
 300  | 
 117  | 
 200  | 
| 
 6  | 
 8  | 
 3/4  | 
 300  | 
 148  | 
 200  | 
| 
 8  | 
 8  | 
 3/4  | 
 300  | 
 200  | 
 200  | 
| 
 10  | 
 12  | 
 7/8  | 
 300  | 
 188  | 
 320  | 
| 
 12  | 
 12  | 
 7/8  | 
 300  | 
 250  | 
 320  | 
| 
 14  | 
 12  | 
 1  | 
 300  | 
 317  | 
 490  | 
| 
 16  | 
 16  | 
 1  | 
 300  | 
 301  | 
 490  | 
| 
 18  | 
 16  | 
 1-1/8  | 
 300  | 
 448  | 
 710  | 
| 
 20  | 
 20  | 
 1-1/8  | 
 300  | 
 395  | 
 710  | 
| 
 24  | 
 20  | 
 1-1/4  | 
 300  | 
 563  | 
 1000  |