Flange
Slide
Rule
Interactive Reference
Flange Size (Nominal)
2-1/16" (2.0625")
2-9/16" (2.5625")
3-1/16" (3.0625")
4-1/16" (4.0625")
7-1/16" (7.0625")
9"
11"
13-5/8" (13.625")
Pressure Rating
2M (2,000 psi)
3M (3,000 psi)
5M (5,000 psi)
10M (10,000 psi)
15M (15,000 psi)
Reference Standard
API 6A
7-1/16"
Nominal Bore
5M
Pressure Rating
R-46
Standard Ring
RX-46
Pressure Energized Ring
6" 1500
Old API Designation
RAISED FACE, IF PRESENT, SHALL NOT EXCEED THE DEPTH OF THE RING GROOVE. STUD AND BOLT DIMENSIONS DERIVED FROM AWHEM DOCUMENT TR9501. FOR REFERENCE ONLY — VERIFY WITH CURRENT API 6A STANDARD. ©2024
Tap End Studs & Stud Bolts
5/8" – 11UNC THDS.
3/4" – 10UNC THDS.
7/8" – 9UNC THDS.
1" – 8UNC THDS.
1-1/8" & Larger – 8UN THDS.