3 important stud bolts charts: 1- stud bolts dimensions in inches and millimeters (number, diameter, length of stud bolts for ASME flanges of different diameter and rating); 2- stud bolts weight (in kilograms and pounds for metric and imperial bolts, by diameter and length); 3- stud bolt torque chart (tightening sequence and load to ensure proper flanged joints).
STUD BOLTS SIZES (IN INCHES)

CLASS 150 FLANGES
Stud bolts dimensions for ASME B16.5 RF and RTJ flanges class 150 (in inches)
Class 150 Flanges ASME B16.5 (Stud bolt sizes) | Length of Stud Bolts | |||||||
NPS | Outside Diameter of Flange | The diameter of Bolt Circle | The diameter of Bolt Holes | Number of Bolts | Diameter of Bolts | Raised Face 0.06 in |
Ring Joint | |
1/2 | 3 1/2 | 2 3/8 | 5/8 | 4 | 1/2 | 2 1/4 | – | |
3/4 | 3 7/8 | 2 3/4 | 5/8 | 4 | 1/2 | 2 1/2 | – | |
1 | 4 1/4 | 3 1/8 | 5/8 | 4 | 1/2 | 2 1/2 | 3 | |
1 1/4 | 4 5/8 | 3 1/2 | 5/8 | 4 | 1/2 | 2 3/4 | 3 1/4 | |
1 1/2 | 5 | 3 7/8 | 5/8 | 4 | 1/2 | 2 3/4 | 3 1/4 | |
2 | 6 | 4 3/4 | 3/4 | 4 | 5/8 | 3 1/4 | 3 3/4 | |
2 1/2 | 7 | 5 1/2 | 3/4 | 4 | 5/8 | 3 1/2 | 4 | |
3 | 7 1/2 | 6 | 3/4 | 4 | 5/8 | 3 1/2 | 4 | |
3 1/2 | 8 1/2 | 7 | 3/4 | 8 | 5/8 | 3 1/2 | 4 | |
4 | 9 | 7 1/2 | 3/4 | 8 | 5/8 | 3 1/2 | 4 | |
5 | 10 | 8 1/2 | 7/8 | 8 | 3/4 | 3 3/4 | 4 1/4 | |
6 | 11 | 9 1/2 | 7/8 | 8 | 3/4 | 4 | 4 1/2 | |
8 | 13 1/2 | 11 3/4 | 7/8 | 8 | 3/4 | 4 1/4 | 4 3/4 | |
10 | 16 | 14 3/4 | 1 | 12 | 7/8 | 4 1/2 | 5 | |
12 | 19 | 17 | 1 | 12 | 7/8 | 4 3/4 | 5 1/4 | |
14 | 21 | 18 3/4 | 1 1/8 | 12 | 1 | 5 1/4 | 5 3/4 | |
16 | 23 1/2 | 21 1/4 | 1 1/8 | 16 | 1 | 5 1/4 | 5 3/4 | |
18 | 25 | 22 3/4 | 1 1/4 | 16 | 1 1/8 | 5 3/4 | 6 1/4 | |
20 | 27 1/2 | 25 | 1 1/4 | 20 | 1 1/8 | 6 1/4 | 6 3/4 | |
24 | 32 | 29 1/2 | 1 1/4 | 20 | 1 1/4 | 6 3/4 | 7 1/4 |
CLASS 300 FLANGES
Stud bolts dimensions for ASME B16.5 RF and RTJ flanges class 300 (in inches)
Class 300 Flanges ASME B16.5 | Length of Stud Bolts | |||||||
NPS | Outside Diameter of Flange | The diameter of Bolt Circle | The diameter of Bolt Holes | Number of Bolts | Diameter of Bolts | Raised Face 0.06 in |
Ring Joint | |
1/2 | 3 3/4 | 2 5/8 | 5/8 | 4 | 1/2 | 2 1/2 | 3 | |
3/4 | 4 5/8 | 3 1/4 | 3/4 | 4 | 5/8 | 3 | 3 1/2 | |
1 | 4 7/8 | 3 1/2 | 3/4 | 4 | 5/8 | 3 | 3 1/2 | |
1 1/4 | 5 1/4 | 3 7/8 | 3/4 | 4 | 5/8 | 3 1/4 | 3 3/4 | |
1 1/2 | 6 1/8 | 4 1/2 | 7/8 | 4 | 3/4 | 3 1/2 | 4 | |
2 | 6 1/2 | 5 | 3/4 | 8 | 5/8 | 3 1/2 | 4 | |
2 1/2 | 7 1/2 | 5 7/8 | 7/8 | 8 | 3/4 | 4 | 4 1/2 | |
3 | 8 1/4 | 6 5/8 | 7/8 | 8 | 3/4 | 4 1/4 | 4 3/4 | |
3 1/2 | 9 | 7 1/4 | 7/8 | 8 | 3/4 | 4 1/4 | 5 | |
4 | 10 | 7 7/8 | 7/8 | 8 | 3/4 | 4 1/2 | 5 | |
5 | 11 | 9 1/4 | 7/8 | 8 | 3/4 | 4 3/4 | 5 1/4 | |
6 | 12 1/2 | 10 5/8 | 7/8 | 12 | 3/4 | 4 3/4 | 5 1/2 | |
8 | 15 | 13 | 1 | 12 | 7/8 | 5 1/2 | 6 | |
10 | 17 1/2 | 15 1/4 | 1 1/8 | 16 | 1 | 6 1/4 | 6 3/4 | |
12 | 20 1/2 | 17 3/4 | 1 1/4 | 16 | 1 1/8 | 6 3/4 | 7 1/4 | |
14 | 23 | 20 1/4 | 1 1/4 | 20 | 1 1/8 | 7 | 7 1/2 | |
16 | 25 1/2 | 22 1/2 | 1 3/8 | 20 | 1 1/4 | 7 1/2 | 8 | |
18 | 28 | 24 3/4 | 1 3/8 | 24 | 1 1/4 | 7 3/4 | 8 1/4 | |
20 | 30 1/2 | 27 | 1 3/8 | 24 | 1 1/4 | 8 | 8 3/4 | |
24 | 36 | 32 | 1 5/8 | 24 | 1 1/2 | 9 | 10 |
CLASS 600 FLANGES
Stud bolts dimensions for ASME B16.5 RF and RTJ flanges class 600 (in inches)
Class 600 Flanges ASME B16.5 | Length of Stud Bolts | |||||||
NPS | Outside Diameter of Flange | The diameter of Bolt Circle | The diameter of Bolt Holes | Number of Bolts | Diameter of Bolts | Raised Face 0.06 in |
Ring Joint | |
1/2 | 3 3/4 | 2 5/8 | 5/8 | 4 | 1/2 | 3 | 3 | |
3/4 | 4 5/8 | 3 1/4 | 3/4 | 4 | 5/8 | 3 1/2 | 3 1/2 | |
1 | 4 7/8 | 3 1/2 | 3/4 | 4 | 5/8 | 3 1/2 | 3 1/2 | |
1 1/4 | 5 1/4 | 3 7/8 | 3/4 | 4 | 5/8 | 3 3/4 | 3 3/4 | |
1 1/2 | 6 1/8 | 4 1/2 | 7/8 | 4 | 3/4 | 4 1/4 | 4 1/4 | |
2 | 6 1/2 | 5 | 3/4 | 8 | 5/8 | 4 1/4 | 4 1/4 | |
2 1/2 | 7 1/2 | 5 7/8 | 7/8 | 8 | 3/4 | 4 3/4 | 4 3/4 | |
3 | 8 1/4 | 6 5/8 | 7/8 | 8 | 3/4 | 5 | 5 | |
3 1/2 | 9 | 7 1/4 | 1 | 8 | 7/8 | 5 1/2 | 5 1/2 | |
4 | 10 3/4 | 8 1/2 | 1 | 8 | 7/8 | 5 3/4 | 5 3/4 | |
5 | 13 | 10 1/2 | 1 1/8 | 8 | 1 | 6 1/2 | 6 1/2 | |
6 | 14 | 11 1/2 | 1 1/8 | 12 | 1 | 6 3/4 | 6 3/4 | |
8 | 16 1/2 | 13 3/4 | 1 1/4 | 12 | 1 1/8 | 7 1/2 | 7 3/4 | |
10 | 20 | 17 | 1 3/8 | 16 | 1 1/4 | 8 1/2 | 8 1/2 | |
12 | 22 | 19 1/4 | 1 3/8 | 20 | 1 1/4 | 8 3/4 | 8 3/4 | |
14 | 23 3/4 | 20 3/4 | 1 1/2 | 20 | 1 3/8 | 9 1/4 | 9 1/4 | |
16 | 27 | 23 3/4 | 1 5/8 | 20 | 1 1/2 | 10 | 10 | |
18 | 29 1/4 | 25 3/4 | 1 3/4 | 20 | 1 5/8 | 10 3/4 | 10 3/4 | |
20 | 32 | 28 1/2 | 1 3/4 | 24 | 1 5/8 | 11 1/4 | 11 1/2 | |
24 | 37 | 33 | 2 | 24 | 1 7/8 | 13 | 13 1/4 |
CLASS 900 FLANGES
Stud bolts dimensions for ASME B16.5 RF and RTJ flanges class 900 (in inches)
Class 900 Flanges ASME B16.5 | Length of Stud Bolts | |||||||
NPS | Outside Diameter of Flange | The diameter of Bolt Circle | The diameter of Bolt Holes | Number of Bolts | Diameter of Bolts | Raised Face 0.06 in |
Ring Joint | |
1/2 | 4 3/4 | 3 1/4 | 7/8 | 4 | 3/4 | 4 1/4 | 4 1/4 | |
3/4 | 5 1/8 | 3 1/2 | 7/8 | 4 | 3/4 | 4 1/2 | 4 1/2 | |
1 | 5 7/8 | 4 | 1 | 4 | 7/8 | 5 | 5 | |
1 1/4 | 6 1/4 | 4 3/8 | 1 | 4 | 7/8 | 5 | 5 | |
1 1/2 | 7 | 4 7/8 | 1 1/8 | 4 | 1 | 5 1/2 | 5 1/2 | |
2 | 8 1/2 | 6 1/2 | 1 | 8 | 7/8 | 5 3/4 | 5 3/4 | |
2 1/2 | 9 5/8 | 7 1/2 | 1 1/8 | 8 | 1 | 6 1/4 | 6 1/4 | |
3 | 9 1/2 | 7 1/2 | 1 | 8 | 7/8 | 5 3/4 | 5 3/4 | |
4 | 11 1/2 | 9 1/4 | 1 1/4 | 8 | 1 1/8 | 6 3/4 | 6 3/4 | |
5 | 13 3/4 | 11 | 1 3/8 | 8 | 1 1/4 | 7 1/2 | 7 1/2 | |
6 | 15 | 12 1/2 | 1 1/4 | 12 | 1 1/8 | 7 1/2 | 7 3/4 | |
8 | 18 1/2 | 15 1/2 | 1 1/2 | 12 | 1 3/8 | 8 3/8 | 8 3/4 | |
10 | 21 1/2 | 18 1/2 | 1 1/2 | 16 | 1 3/8 | 9 1/4 | 9 1/4 | |
12 | 24 | 21 | 1 1/2 | 20 | 1 3/8 | 10 | 10 | |
14 | 25 1/4 | 22 | 1 5/8 | 20 | 1 1/2 | 10 3/4 | 11 | |
16 | 27 3/4 | 24 1/4 | 1 3/4 | 20 | 1 5/8 | 11 1/4 | 11 1/2 | |
18 | 31 | 27 | 2 | 20 | 1 7/8 | 12 3/4 | 13 1/4 | |
20 | 33 3/4 | 29 1/2 | 2 1/8 | 20 | 2 | 13 3/4 | 14 1/4 | |
24 | 41 | 35 1/2 | 2 5/8 | 20 | 2 1/2 | 17 1/4 | 18 |
CLASS 1500 FLANGES
Stud bolts dimensions for ASME B16.5 RF and RTJ flanges class 1500 (in inches)
Class 1500 Flanges ASME B16.5 | Length of Stud Bolts | |||||||
NPS | Outside Diameter of Flange | The diameter of Bolt Circle | The diameter of Bolt Holes | Number of Bolts | Diameter of Bolts | Raised Face 0.06 in |
Ring Joint | |
1/2 | 4 3/4 | 3 1/4 | 7/8 | 4 | 3/4 | 4 1/4 | 4 1/4 | |
3/4 | 5 1/8 | 3 1/2 | 7/8 | 4 | 3/4 | 4 1/2 | 4 1/2 | |
1 | 5 7/8 | 4 | 1 | 4 | 7/8 | 5 | 5 | |
1 1/4 | 6 1/4 | 4 3/8 | 1 | 4 | 7/8 | 5 | 5 | |
1 1/2 | 7 | 4 7/8 | 1 1/8 | 4 | 1 | 5 1/2 | 5 1/2 | |
2 | 8 1/2 | 6 1/2 | 1 | 8 | 7/8 | 5 3/4 | 5 3/4 | |
2 1/2 | 9 5/8 | 7 1/2 | 1 1/8 | 8 | 1 | 6 1/4 | 6 1/4 | |
3 | 10 1/2 | 8 | 1 1/4 | 8 | 1 1/8 | 7 | 7 | |
4 | 12 1/4 | 9 1/2 | 1 3/8 | 8 | 1 1/4 | 7 3/4 | 7 3/4 | |
5 | 14 3/4 | 11 1/2 | 1 5/8 | 8 | 1 1/2 | 9 3/4 | 9 3/4 | |
6 | 15 1/2 | 12 1/2 | 1 1/2 | 12 | 1 3/8 | 10 1/4 | 10 1/2 | |
8 | 19 | 15 1/2 | 1 3/4 | 12 | 1 5/8 | 11 1/2 | 12 3/4 | |
10 | 23 | 19 | 2 | 12 | 1 7/8 | 13 1/4 | 13 1/2 | |
12 | 26 1/2 | 22 1/2 | 2 1/8 | 16 | 2 | 14 3/4 | 15 1/4 | |
14 | 29 1/2 | 25 | 2 3/8 | 16 | 2 1/4 | 16 | 16 3/4 | |
16 | 32 1/2 | 27 3/4 | 2 5/8 | 16 | 2 1/2 | 17 1/2 | 18 1/2 | |
18 | 36 | 30 1/2 | 2 7/8 | 16 | 2 3/4 | 19 1/2 | 20 3/4 | |
20 | 38 3/4 | 32 3/4 | 3 1/8 | 16 | 3 | 21 1/4 | 22 1/4 | |
24 | 46 | 39 | 3 5/8 | 16 | 3 1/2 | 24 1/4 | 25 1/2 |
STUD BOLTS SIZES (IN MILLIMETERS)
CLASS 150 FLANGES
Stud bolts dimensions for ASME B16.5 RF and RTJ flanges class 150 (in millimeters)
NPS | STUD BOLTS DIAMETER in. | LENGHT RF | LENGHT RTJ |
STUD BOLTS NUMBER |
---|---|---|---|---|
1/2 | 1/2 | 55 | … | 4 |
3/4 | 1/2 | 65 | .. | 4 |
1 | 1/2 | 65 | 75 | 4 |
1.1/4 | 1/2 | 70 | 85 | 4 |
1.1/2 | 1/2 | 70 | 85 | 4 |
2 | 5/8 | 85 | 95 | 4 |
2.1/2 | 5/8 | 90 | 100 | 4 |
3 | 5/8 | 90 | 100 | 4 |
3.1/2 | 5/8 | 90 | 100 | 8 |
4 | 5/8 | 90 | 100 | 8 |
NPS | STUD BOLTS DIAMETER in. | LENGHT RF | LENGHT RTJ |
STUD BOLTS NUMBER |
---|---|---|---|---|
5 | 3/4 | 95 | 110 | 8 |
6 | 3/4 | 100 | 115 | 8 |
8 | 3/4 | 110 | 120 | 8 |
10 | 7/8 | 115 | 125 | 12 |
12 | 7/8 | 120 | 135 | 12 |
14 | 1 | 135 | 145 | 12 |
16 | 1 | 135 | 145 | 16 |
18 | 1.1/8 | 145 | 160 | 16 |
20 | 1.1/8 | 160 | 170 | 20 |
24 | 1.1/4 | 170 | 185 | 20 |
CLASS 300 FLANGES
Stud bolts dimensions for ASME B16.5 RF and RTJ flanges class 300 (in millimeters)
NPS | STUD BOLTS DIAMETER in. |
LENGHT RF |
LENGHT RTJ |
BOLTS NUMBER |
---|---|---|---|---|
1/2 | 1/2 | 65 | 75 | 4 |
3/4 | 5/8 | 75 | 90 | 4 |
1 | 5/8 | 75 | 90 | 4 |
1.1/4 | 5/8 | 85 | 95 | 4 |
1.1/2 | 3/4 | 90 | 100 | 4 |
2 | 5/8 | 90 | 100 | 8 |
2.1/2 | 3/4 | 100 | 115 | 8 |
3 | 3/4 | 110 | 120 | 8 |
3.1/2 | 3/4 | 110 | 125 | 8 |
4 | 3/4 | 115 | 125 | 8 |
NPS | STUD BOLTS DIAMETER in. |
LENGHT RF |
LENGHT RTJ |
BOLTS NUMBER |
---|---|---|---|---|
5 | 3/4 | 120 | 135 | 8 |
6 | 3/4 | 120 | 140 | 12 |
8 | 7/8 | 140 | 150 | 12 |
10 | 1 | 160 | 170 | 16 |
12 | 1.1/8 | 170 | 185 | 16 |
14 | 1.1/8 | 180 | 190 | 20 |
16 | 1.1/4 | 190 | 205 | 20 |
18 | 1.1/4 | 195 | 210 | 24 |
20 | 1.1/4 | 205 | 220 | 24 |
24 | 1.1/2 | 230 | 255 | 24 |
CLASS 400 FLANGES
Stud bolts dimensions for ASME B16.5 RF and RTJ flanges class 400 (in millimeters)
NPS | STUD BOLTS DIAMETER in. |
LENGHT RF |
LENGHT RTJ |
BOLTS NUMBER |
---|---|---|---|---|
1/2 | 1/2 | 75 | 75 | 4 |
3/4 | 5/8 | 90 | 90 | 4 |
1 | 5/8 | 90 | 90 | 4 |
1.1/4 | 5/8 | 95 | 95 | 4 |
1.1/2 | 3/4 | 110 | 110 | 4 |
2 | 5/8 | 110 | 110 | 8 |
2.1/2 | 3/4 | 120 | 120 | 8 |
3 | 3/4 | 125 | 125 | 8 |
3.1/2 | 7/8 | 140 | 140 | 8 |
4 | 7/8 | 140 | 140 | 8 |
NPS | STUD BOLTS DIAMETER in. |
LENGHT RF |
LENGHT RTJ |
BOLTS NUMBER |
---|---|---|---|---|
5 | 7/8 | 145 | 145 | 8 |
6 | 7/8 | 150 | 150 | 12 |
8 | 1 | 170 | 170 | 12 |
10 | 1.1/8 | 190 | 190 | 16 |
12 | 1.1/4 | 205 | 205 | 16 |
14 | 1.1/4 | 210 | 210 | 20 |
16 | 1.3/8 | 220 | 220 | 20 |
18 | 1.3/8 | 230 | 230 | 24 |
20 | 1.1/2 | 240 | 250 | 24 |
24 | 1.3/4 | 265 | 280 | 24 |
CLASS 600 FLANGES
Stud bolts dimensions for ASME B16.5 RF and RTJ flanges class 600 (in millimeters)
NPS | STUD BOLTS DIAMETER in. |
LENGHT RF |
LENGHT RTJ |
STUD BOLTS NUMBER |
---|---|---|---|---|
1/2 | 1/2 | 75 | 75 | 4 |
3/4 | 5/8 | 90 | 90 | 4 |
1 | 5/8 | 90 | 90 | 4 |
1.1/4 | 5/8 | 95 | 95 | 4 |
1.1/2 | 3/4 | 110 | 110 | 4 |
2 | 5/8 | 110 | 110 | 8 |
2.1/2 | 3/4 | 120 | 120 | 8 |
3 | 3/4 | 125 | 125 | 8 |
3.1/2 | 7/8 | 140 | 140 | 8 |
4 | 7/8 | 145 | 145 | 8 |
NPS | STUD BOLTS DIAMETER in. |
LENGHT RF |
LENGHT RTJ |
STUD BOLTS NUMBER |
---|---|---|---|---|
5 | 1 | 165 | 165 | 8 |
6 | 1 | 170 | 170 | 12 |
8 | 1.1/8 | 190 | 195 | 12 |
10 | 1.1/4 | 215 | 215 | 16 |
12 | 1.1/4 | 220 | 220 | 20 |
14 | 1.3/8 | 235 | 235 | 20 |
16 | 1.1/2 | 255 | 255 | 20 |
18 | 1.5/8 | 275 | 275 | 20 |
20 | 1.5/8 | 285 | 290 | 24 |
24 | 1.7/8 | 330 | 335 | 24 |
CLASS 900 FLANGES
Stud bolts dimensions for ASME B16.5 RF and RTJ flanges class 900 (in millimeters)
NPS | STUD BOLTS DIAMETER in. |
LENGHT RF |
LENGHT RTJ |
STUD BOLTS NUMBER |
---|---|---|---|---|
1/2 | 3/4 | 110 | 110 | 4 |
3/4 | 3/4 | 115 | 115 | 4 |
1 | 7/8 | 125 | 125 | 4 |
1.1/4 | 7/8 | 125 | 125 | 4 |
1.1/2 | 1 | 140 | 140 | 4 |
2 | 7/8 | 145 | 145 | 8 |
2.1/2 | 1 | 160 | 160 | 8 |
3 | 7/8 | 145 | 145 | 8 |
4 | 1.1/8 | 170 | 170 | 8 |
5 | 1.1/4 | 190 | 190 | 8 |
NPS | STUD BOLTS DIAMETER in. |
LENGHT RF |
LENGHT RTJ |
STUD BOLTS NUMBER |
---|---|---|---|---|
6 | 1.1/8 | 190 | 195 | 12 |
8 | 1.3/8 | 220 | 220 | 12 |
10 | 1.3/8 | 235 | 235 | 16 |
12 | 1.3/8 | 255 | 255 | 20 |
14 | 1.1/2 | 275 | 280 | 20 |
16 | 1.5/8 | 285 | 290 | 20 |
18 | 1.7/8 | 325 | 335 | 20 |
20 | 2 | 350 | 360 | 20 |
24 | 2.1/2 | 440 | 455 | 20 |
Lengths in mm
CLASS 1500 FLANGES
Stud bolts dimensions for ASME B16.5 RF and RTJ flanges class 1500 (in millimeters)
NPS | STUD BOLTS DIAMETER in. |
LENGHT RF |
LENGHT RTJ |
STUD BOLTS NUMBER |
---|---|---|---|---|
1/2 | 3/4 | 110 | 110 | 4 |
3/4 | 3/4 | 115 | 115 | 4 |
1 | 7/8 | 125 | 125 | 4 |
1.1/4 | 7/8 | 125 | 125 | 4 |
1.1/2 | 1 | 140 | 140 | 4 |
2 | 7/8 | 145 | 145 | 8 |
2.1/2 | 1 | 160 | 160 | 8 |
3 | 1.1/8 | 180 | 180 | 8 |
4 | 1.1/4 | 195 | 195 | 8 |
5 | 1.1/2 | 250 | 250 | 8 |
NPS | STUD BOLTS DIAMETER in. |
LENGHT RF |
LENGHT RTJ |
STUD BOLTS NUMBER |
---|---|---|---|---|
6 | 1.3/8 | 260 | 265 | 12 |
8 | 1.5/8 | 290 | 300 | 12 |
10 | 1.7/8 | 335 | 345 | 12 |
12 | 2 | 375 | 385 | 16 |
14 | 2.1/4 | 405 | 425 | 16 |
16 | 2.1/2 | 445 | 470 | 16 |
18 | 2.3/4 | 495 | 525 | 16 |
20 | 3 | 540 | 565 | 16 |
24 | 3.1/2 | 615 | 650 | 16 |
CLASS 2500 FLANGES
Stud bolts dimensions for ASME B16.5 RF and RTJ flanges class 2500 (in millimeters)
NPS | STUD BOLTS DIAMETER in. |
LENGHT RF |
LENGHT RTJ |
STUD BOLTS NUMBER |
---|---|---|---|---|
1/2 | 3/4 | 120 | 120 | 4 |
3/4 | 3/4 | 125 | 125 | 4 |
1 | 7/8 | 140 | 140 | 4 |
1.1/4 | 1 | 150 | 150 | 4 |
1.1/2 | 1.1/8 | 170 | 170 | 4 |
2 | 1 | 180 | 180 | 8 |
2.1/2 | 1.1/8 | 195 | 205 | 8 |
NPS | STUD BOLTS DIAMETER in. |
LENGHT RF |
LENGHT RTJ |
STUD BOLTS NUMBER |
---|---|---|---|---|
6 | 1.3/8 | 260 | 265 | 12 |
8 | 1.5/8 | 290 | 300 | 12 |
10 | 1.7/8 | 335 | 345 | 12 |
12 | 2 | 375 | 385 | 16 |
14 | 2.1/4 | 405 | 425 | 16 |
16 | 2.1/2 | 445 | 470 | 16 |
18 | 2.3/4 | 495 | 525 | 16 |
20 | 3 | 540 | 565 | 16 |
24 | 3.1/2 | 615 | 650 | 16 |
STUD BOLTS WEIGHT
WEIGHT IMPERIAL STUD BOLTS
The table shows the weight in kgs. for 100 imperial stud bolts, including 1 threaded rod and 2 heavy hexagonal nuts
STUD BOLT LENGTH (in inches) | 1/2 | 5/8 | 3/4 | 7/8 | 1 | 1 1/8 | 1 1/4 | 1.3/8 | 1 1/2 | 1.5/8 | 1.3/4 | 1 7/8 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2.1/2 | 10.8 | |||||||||||
2.3/4 | 11.6 | 19.8 | ||||||||||
3.1/4 | 12.4 | 21 | 32.4 | |||||||||
3.1/2 | 13.2 | 22.2 | 34.3 | 50 | ||||||||
4 | 14 | 23.4 | 36.2 | 52.6 | 71.8 | |||||||
4.1/2 | 14.8 | 24.6 | 38.1 | 55.2 | 75.2 | 102 | ||||||
4.3/4 | 15.6 | 25.8 | 40 | 57.8 | 78.6 | 106 | 137 | |||||
5 | 16.4 | 27 | 41.9 | 60.4 | 82 | 111 | 142 | 179 | ||||
5.1/2 | 17.2 | 28.2 | 43.8 | 63 | 85.4 | 115 | 147 | 186 | 234 | |||
6 | 18 | 29.4 | 45.7 | 65.6 | 88.8 | 119 | 153 | 193 | 242 | 289 | ||
6.1/4 | 18.8 | 30.6 | 47.6 | 68.2 | 92.2 | 123 | 158 | 200 | 250 | 298 | 263 | |
6.1/2 | 19.6 | 32.3 | 49.5 | 70.8 | 95.6 | 128 | 164 | 206 | 258 | 308 | 374 | 437 |
7 | 20.4 | 33.5 | 50.8 | 73.4 | 99 | 132 | 169 | 213 | 266 | 317 | 385 | 449 |
7.1/2 | 21.2 | 34.8 | 52.7 | 75.5 | 103 | 136 | 174 | 220 | 275 | 326 | 396 | 462 |
8 | 22 | 36.1 | 54.5 | 78 | 106 | 141 | 180 | 226 | 283 | 336 | 407 | 475 |
8.1/4 | 37.3 | 56.3 | 80.5 | 108 | 145 | 185 | 233 | 291 | 345 | 418 | 488 | |
8.3/4 | 38.6 | 58.1 | 83.1 | 112 | 149 | 191 | 240 | 299 | 354 | 429 | 500 | |
9 | 39.8 | 60 | 85.6 | 115 | 153 | 196 | 246 | 307 | 364 | 440 | 513 | |
9.1/2 | 41.1 | 61.8 | 88.2 | 118 | 158 | 201 | 253 | 316 | 373 | 451 | 526 | |
10 | 63.7 | 90.7 | 122 | 162 | 206 | 260 | 324 | 382 | 463 | 538 | ||
10/1.4 | 93.3 | 125 | 166 | 212 | 267 | 332 | 391 | 474 | 551 | |||
1.0.1/2 | 128 | 171 | 217 | 273 | 340 | 401 | 485 | 564 | ||||
11 | 132 | 175 | 223 | 279 | 345 | 410 | 496 | 576 | ||||
11.1/2 | 135 | 179 | 228 | 285 | 350 | 419 | 507 | 589 | ||||
12 | 138 | 184 | 233 | 292 | 358 | 429 | 518 | 602 |
WEIGHT OF METRIC STUD BOLTS
The table shows the weight in kgs. for 100 metric stud bolts, including 1 threaded rod and 2 heavy hexagonal nuts.
STUD BOLT LENGTH (in mm) | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
60 | 5,6 | 8,1 | 12 | 15,6 | |||||||||
70 | 6,1 | 8,9 | 13 | 16,9 | 23,7 | ||||||||
80 | 6,6 | 9,6 | 14 | 18,2 | 25,4 | 32,5 | |||||||
90 | 7,1 | 10,3 | 15 | 19,6 | 27,1 | 34,5 | 45,5 | ||||||
100 | 7,6 | 11 | 16 | 21 | 28,8 | 36,7 | 47,2 | 54,2 | |||||
110 | 8,1 | 11,7 | 17 | 22,2 | 30,4 | 38,7 | 48,3 | 58,2 | 80 | ||||
120 | 8,6 | 12,4 | 18 | 23,6 | 32,1 | 40,7 | 50,9 | 60,2 | 84,7 | 107 | |||
130 | 9,1 | 13,2 | 19 | 24,9 | 33,7 | 42,8 | 53,4 | 63,2 | 88,6 | 111 | 141 | ||
140 | 9,6 | 14,2 | 20 | 26,2 | 35,4 | 44,9 | 55,9 | 66,2 | 92,4 | 116 | 147 | 185 | |
150 | 10,1 | 14,9 | 20,8 | 27,5 | 36,9 | 46,9 | 58,5 | 69,2 | 96,3 | 121 | 153 | 192 | 237 |
160 | 10,6 | 15,6 | 21,8 | 29,1 | 38,6 | 49 | 61 | 72,2 | 100,1 | 126 | 159 | 199 | 245 |
170 | 16,4 | 22,8 | 30,4 | 40,2 | 51,1 | 63,5 | 75,2 | 104 | 130 | 165 | 206 | 253 | |
180 | 23,8 | 31,8 | 41,9 | 52,3 | 66,1 | 78,1 | 108 | 135 | 171 | 213 | 261 | ||
190 | 33,1 | 43,5 | 54,4 | 68,4 | 81,1 | 112 | 140 | 176 | 219 | 269 | |||
200 | 34,5 | 45,2 | 56,2 | 71 | 84 | 116 | 144 | 182 | 226 | 278 | |||
210 | 35,8 | 46,8 | 58,5 | 73,5 | 88,4 | 120 | 149 | 188 | 233 | 286 | |||
220 | 37,1 | 48,4 | 60,6 | 76,1 | 91,4 | 124 | 154 | 194 | 240 | 294 | |||
230 | 38,5 | 50,1 | 62,6 | 78,6 | 94,4 | 127 | 159 | 201 | 247 | 302 | |||
240 | 39,8 | 51,7 | 64,7 | 81,2 | 97,4 | 130,9 | 164 | 208 | 253 | 310 | |||
250 | 41,1 | 53,4 | 66,8 | 83,7 | 100,4 | 134,8 | 172 | 214 | 260 | 319 | |||
260 | 55 | 68,8 | 86,3 | 103,4 | 138,6 | 177 | 220 | 267 | 327 | ||||
270 | 56,6 | 70,9 | 88,8 | 106,4 | 142,5 | 182 | 224 | 274 | 335 | ||||
280 | 58,3 | 73 | 91,4 | 109,4 | 146,3 | 187 | 230 | 281 | 343 | ||||
290 | 75 | 93,9 | 112,4 | 150,1 | 192 | 236 | 291 | 360 | |||||
300 | 77,1 | 96,5 | 115,4 | 154 | 196 | 241 | 298 | 368 | |||||
320 | 101,6 | 121,3 | 161,7 | 206 | 253 | 312 | 380 | ||||||
340 | 127,3 | 169,4 | 215 | 265 | 326 | 395 | |||||||
360 | 133,3 | 177,1 | 224 | 276 | 340 | 411 | |||||||
380 | 184,8 | 234 | 288 | 353 | 428 | ||||||||
400 | 192,5 | 243 | 299 | 367 | 444 | ||||||||
420 | 252 | 311 | 381 | 460 | |||||||||
440 | 262 | 322 | 394 | 477 | |||||||||
460 | 271 | 334 | 408 | 493 | |||||||||
480 | 281 | 345 | 422 | 509 | |||||||||
500 | 290 | 357 | 436 | 526 |
Stud bolt weight includes 2 heavy hex steel nuts
STUD BOLTS TORQUE CHART
The stud bolt and nut torque chart show the sequence to use, and the force to apply, to stud bolts used to tighten flanges (by flange class).
The torque chart is for reference only and assumes properly lubricated ASTM A193 B7 stud bolts with ASTM A194 2H steel nuts.
CLASS 150 FLANGE
Stud bolt torque chart for ASME B16.5 FF and RF class 150 flanges
Flange Size |
B16.5 Class 150 RF/ Ring Gaskets | B16.5 Class 150 FF/ Full Face Gaskets | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Torque / Round (ft-lbs) | Stud Bolts Tighten Sequence | Torque / Round (ft-lbs) | Stud Bolts Tighten Sequence | |||||||
1st | 2nd | Final | Dwg/No. | Bolt Size | 1st | 2nd | Final | Dwg*/No. | Bolt Size | |
1/2″ | 10 | 20 | 30 | 4-bolt | 1/2″ | 20 | 40 | 60 | 4-bolt | 1/2″ |
3/4″ | 13 | 27 | 40 | 4-bolt | 1/2″ | 20 | 40 | 60 | 4-bolt | 1/2″ |
1″ | 15 | 30 | 50 | 4-bolt | 1/2″ | 20 | 40 | 60 | 4-bolt | 1/2″ |
1-1/4″ | 20 | 40 | 60 | 4-bolt | 1/2″ | 20 | 40 | 60 | 4-bolt | 1/2″ |
1-1/2″ | 20 | 40 | 60 | 4-bolt | 1/2″ | 20 | 40 | 60 | 4-bolt | 1/2″ |
2″ | 40 | 80 | 120 | 4-bolt | 5/8″ | 40 | 80 | 120 | 4-bolt | 5/8″ |
2-1/2″ | 40 | 80 | 120 | 4-bolt | 5/8″ | 40 | 80 | 120 | 4-bolt | 5/8″ |
3″ | 40 | 80 | 120 | 4-bolt | 5/8″ | 40 | 80 | 120 | 4-bolt | 5/8″ |
3-1/2″ | 40 | 80 | 120 | 8-bolt | 5/8″ | 40 | 80 | 120 | 8-bolt | 5/8″ |
4″ | 40 | 80 | 120 | 8-bolt | 5/8″ | 40 | 80 | 120 | 8-bolt | 5/8″ |
5″ | 60 | 120 | 200 | 8-bolt | 3/4″ | 60 | 120 | 200 | 8-bolt | 3/4″ |
6″ | 60 | 120 | 200 | 8-bolt | 3/4″ | 60 | 120 | 200 | 8-bolt | 3/4″ |
8″ | 60 | 120 | 200 | 8-bolt | 3/4″ | 60 | 120 | 200 | 8-bolt | 3/4″ |
10″ | 95 | 190 | 320 | 12-bolt | 7/8″ | 95 | 190 | 320 | 12-bolt | 7/8″ |
12″ | 95 | 190 | 320 | 12-bolt | 7/8″ | 95 | 190 | 320 | 12-bolt | 7/8″ |
14″ | 147 | 294 | 490 | 12-bolt | 1″ | 147 | 294 | 490 | 12-bolt | 1″ |
16″ | 147 | 294 | 490 | 16-bolt | 1″ | 147 | 294 | 490 | 16-bolt | 1″ |
18″ | 213 | 426 | 710 | 16-bolt | 1-1/8″ | 213 | 426 | 710 | 16-bolt | 1-1/8″ |
20″ | 213 | 426 | 710 | 20-bolt | 1-1/8″ | 213 | 426 | 710 | 20-bolt | 1-1/8″ |
24″ | 300 | 600 | 1,000 | 20-bolt | 1-1/4″ | 300 | 600 | 1,000 | 20-bolt | 1-1/4″ |
CLASS 300 FLANGE
Stud bolt torque chart for ASME B16.5 FF and RF class 300 flanges
Flange Size | B16.5 Class 300 RF/ Ring Gaskets | ||||
---|---|---|---|---|---|
Torque / Round (ft-lbs) | Stud Bolts Tighten Sequence* | ||||
1st | 2nd | Final | Dwg/No. | Stud Bolts Size | |
1/2″ | 10 | 20 | 30 | 4-bolt | 1/2″ |
3/4″ | 15 | 30 | 50 | 4-bolt | 5/8″ |
1″ | 21 | 42 | 70 | 4-bolt | 5/8″ |
1-1/4″ | 30 | 60 | 100 | 4-bolt | 5/8″ |
1-1/2″ | 45 | 90 | 150 | 4-bolt | 3/4″ |
2″ | 33 | 66 | 110 | 8-bolt | 5/8″ |
2-1/2″ | 42 | 84 | 140 | 8-bolt | 3/4″ |
3″ | 60 | 120 | 200 | 8-bolt | 3/4″ |
3-1/2″ | 60 | 120 | 200 | 8-bolt | 3/4″ |
4″ | 60 | 120 | 200 | 8-bolt | 3/4″ |
5″ | 60 | 120 | 200 | 8-bolt | 3/4″ |
6″ | 60 | 120 | 200 | 12-bolt | 3/4″ |
8″ | 95 | 190 | 320 | 12-bolt | 7/8″ |
10″ | 147 | 294 | 490 | 16-bolt | 1″ |
12″ | 213 | 426 | 710 | 16-bolt | 1-1/8″ |
14″ | 195 | 390 | 650 | 20-bolt | 1-1/8″ |
16″ | 273 | 546 | 910 | 20-bolt | 1-1/4″ |
18″ | 300 | 600 | 1,000 | 24-bolt | 1-1/4″ |
20″ | 300 | 600 | 1,000 | 24-bolt | 1-1/4″ |
24″ | 465 | 930 | 1,550 | 24-bolt | 1-1/2″ |
Stud bolt tightening sequence:
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