Dimensions Class 300
Studding Outlets or Pad Flanges
FLAT BOTTOM
SHELL OR HEAD MOUNT
TANGENTIAL MOUNT
OTHER CLASSES
| Bore | OD | Thk | OD of RF |
Stud Circle |
Hole Dia |
No of Holes |
Hole Depth |
Tap Size |
T.P.I. | Tap Depth |
Flat Bottom Weight |
| B | O | T | R | C | U | V | Base | ||||
| 1/2 | 3.75 | 1.25 | 1.38 | 2.62 | 27/64 | 4 | 0.88 | 1/2 | 13 | 0.56 | 3.5 |
| 3/4 | 4.62 | 1.5 | 1.69 | 3.25 | 17/32 | 4 | 1.12 | 5/8 | 11 | 0.75 | 6.4 |
| 1 | 4.88 | 1.5 | 2 | 3.5 | 17/32 | 4 | 1.12 | 5/8 | 11 | 0.75 | 7 |
| 1.1/4 | 5.25 | 1.5 | 2.5 | 3.88 | 17/32 | 4 | 1.12 | 5/8 | 11 | 0.75 | 8 |
| 1.1/2 | 6.12 | 1.75 | 2.88 | 4.5 | 21/32 | 4 | 1.31 | 3/4 | 10 | 0.88 | 13 |
| 2 | 6.5 | 1.5 | 3.62 | 5 | 17/32 | 8 | 1.12 | 5/8 | 11 | 0.75 | 12 |
| 2.1/2 | 7.5 | 1.75 | 4.12 | 5.88 | 21/32 | 8 | 1.31 | 3/4 | 10 | 0.88 | 18 |
| 3 | 8.25 | 1.75 | 5 | 6.62 | 21/32 | 8 | 1.31 | 3/4 | 10 | 0.88 | 22 |
| 3.1/2 | 9 | 1.75 | 5.5 | 7.25 | 21/32 | 8 | 1.31 | 3/4 | 10 | 0.88 | 25 |
| 4 | 10 | 1.75 | 6.19 | 7.88 | 21/32 | 8 | 1.31 | 3/4 | 10 | 0.88 | 30 |
| 5 | 11 | 1.75 | 7.31 | 9.25 | 21/32 | 8 | 1.31 | 3/4 | 10 | 0.88 | 36 |
| 6 | 12.5 | 1.75 | 8.5 | 10.62 | 21/32 | 12 | 1.31 | 3/4 | 10 | 0.88 | 44 |
| 8 | 15 | 1.88 | 10.62 | 13 | 49/64 | 12 | 1.44 | 7/8 | 9 | 1 | 63 |
| 10 | 17.5 | 2.12 | 12.75 | 15.25 | 7/8 | 16 | 1.56 | 1 | 8 | 1.12 | 90 |
| 12 | 20.5 | 2.25 | 15 | 17.75 | 1 | 16 | 1.81 | 1.1/8 | 8 | 1.25 | 127 |
| 14 | 23 | 2.25 | 16.25 | 20.25 | 1 | 20 | 1.81 | 1.1/8 | 8 | 1.25 | 153 |
| 16 | 25.5 | 2.5 | 18.5 | 22.5 | 1 1/8 | 20 | 2.12 | 1.1/4 | 8 | 1.44 | 201 |
| 18 | 28 | 2.5 | 21 | 24.75 | 1 1/8 | 24 | 2.12 | 1.1/4 | 8 | 1.44 | 235 |
| 20 | 30.5 | 2.5 | 23 | 27 | 1 1/8 | 24 | 2.12 | 1.1/4 | 8 | 1.44 | 273 |
| 24 | 36 | 2.88 | 27.25 | 32 | 1 3/8 | 24 | 2.38 | 1.1/2 | 8 | 1.69 | 425 |
Dimensions are in inches. Weights are in pounds.
rf.. In Pressure Classes 150 and 300, the height of raised face is approximately 1/16 inch. In Pressure Classes above, the height of rf is approximately 1/4 inch.
Material.. Studding Outlets are most commonly provided in SA-105. They can also be made from a full range of stainless and alloy materials.
Thickness.. The standard thickness shown above for all studding outlets is the minimum required per ASME Section VIII Division I Paragraph UG-43(d) for thread engagement and an ID mount. It is important to note that each individual application should be analyzed for proper thickness.
Facing.. The Studding Outlet minimum thickness “T” includes proper raised face per ANSI B16.5. Outlets can be supplied with any special facing as needed upon request.
Drilling and Tapping.. Studding Outlets are furnished to ANSI B16.5 specifications unless otherwise specified. Thread depth is in accordance with ASME Section VIII Division I Para. UG-43(g) for a design temperature not to exceed 650ºF, a base metal stress of 17,500 psi(g), and a stud stress of 25,000 psi(g). All other materials exceeding these stresses should be checked for UG-43 compliance.
Bore.. Bore sizes shown above are standard. Other sizes can be furnished upon request.
Curving.. Connections can be furnished contoured to fit any shell, head, or cone.
DIMENSIONS IN THE TABLE ABOVE ARE TAKEN FROM..
Texas Flange is a leading manufacturer of industrial flanges of all different varieties. Their products include flanges according to ASME B16.5, MSS-SP-44, ASME B16.47 Series A, API type 6A, RTJ Face flanges, API-605 flanges etc.