Bolt & Stud Bolt Diameter and Length for ASME B16.47 Series A / MSS SP 44 Flanges
| Nominal Pipe Size, NPS |
Class 150 |
Class 300 |
Class 400 |
Class 600 |
Class 900 |
| d |
L |
d |
L |
d |
L |
d |
L |
d |
L |
| 26" |
1-1/4" |
8-3/4" |
|
|
|
12" |
|
14" |
2-3/4" |
18-1/4' |
| 28" |
1-1/4" |
9" |
|
11" |
|
13" |
2" |
14-1/2" |
3" |
19" |
| 30" |
1-1/4" |
9-1/4" |
1-3/4" |
11-3/4" |
2" |
|
2" |
14-1/2" |
3" |
19-1/2" |
| 32" |
|
|
|
|
2" |
|
|
|
|
20-3/4" |
| 34" |
|
11-1/4" |
1-7/8" |
13" |
2" |
|
|
15-3/4 |
3-1/2" |
21-3/4' |
| 36" |
1-1/2" |
11" |
2" |
|
2" |
14-1/2" |
2-1/2" |
|
3-1/2" |
22-1/4" |
| 38" |
1-1/2" |
11-1/4" |
|
|
1-3/4" |
15" |
|
18-1/4" |
3-1/2" |
23-3/4" |
| 40" |
|
11-3/4" |
|
|
1-7/8" |
|
|
|
3-1/2" |
24-1/4" |
| 42" |
1-1/2" |
12" |
|
13-3/4" |
1-7/8" |
16" |
2-1/2" |
20" |
3-1/2" |
25" |
| 44" |
1-1/2" |
|
1-3/4" |
|
2" |
16-1/2" |
2-1/2" |
|
3-3/4" |
26-1/4" |
| 46" |
|
|
1-7/8" |
15" |
2" |
17" |
2-1/2" |
|
4" |
27-1/2" |
| 48" |
|
|
|
|
2-3/4" |
|
|
|
4" |
28-1/4" |
| 50" |
1-3/4" |
|
2" |
16-1/4" |
2-3/4" |
|
3" |
|
- |
- |
| 52" |
1-3/4" |
|
2" |
|
2-3/4" |
19" |
3" |
23-3/4" |
- |
- |
| 54" |
1-3/4" |
14-1/2" |
|
|
|
20-1/4" |
3" |
|
- |
- |
| 56" |
1-3/4" |
14-1/2 |
|
|
|
|
|
|
- |
- |
| 58" |
1-3/4" |
|
|
|
|
|
|
25-3/4" |
- |
- |
| 60" |
1-3/4" |
|
|
|
|
22" |
3-1/2" |
|
- |
- |
NOTES :
- d stands for "Diameter of Bolts". L stands for "Length of Stud Bolts".
- L is measured from the stud bolt's first thread to its first thread on the other end.
- All dimensions are in inch unit.
The Information contained in this data sheet is for reference purpose only and actual data may vary from product to product. Complete rely on these values for product design is not recommended. User will be solely responsible for any failure in intended construction.
