Appleton Stainless - Back-Up Flanges

Unit of Measure

Items	1295 2 Inch (in) Tube Size Back-Up Plate Flange	1296 2-1/2 Inch (in) Tube Size Back-Up Plate Flange	1297 3 Inch (in) Tube Size Back-Up Plate Flange	1298 3-1/2 Inch (in) Tube Size Back-Up Plate Flange	1299 4 Inch (in) Tube Size Back-Up Plate Flange
Brands	N/A Appelton Stainless
Pipe Size	N/A 2 in	N/A 2-1/2 in	N/A 3 in	N/A 3-1/2 in	N/A 4 in
Pipe Outside Diameter (OD)	N/A 6 in	N/A 7 in	N/A 7-1/2 in	N/A 8-1/2 in	N/A 9 in
Pipe Inside Diameter (ID) for Angle Face Ring (AFR)	N/A 2-3/4 in	N/A 3-1/4 in	N/A 4 in	N/A 4-5/8 in	N/A 5-1/8 in
Pipe Inside Diameter (ID) for Stud End	N/A 2-7/16 in	N/A 2-15/16 in	N/A 3-9/16 in	N/A 4-1/16 in	N/A 4-9/16 in
Pipe Thickness (T)	N/A 1/2 in
Number of Bores (BH) for Pipe	N/A 4	N/A 4	N/A 4	N/A 8	N/A 8
Bore Size (BH) for Pipe	N/A 3/4 in
Dimension (BCD) for Pipe	N/A 4-3/4 in	N/A 5-1/2 in	N/A 6 in	N/A 7 in	N/A 7-1/2 in
Tube Size	N/A 2 in	N/A 2-1/2 in	N/A 3 in	N/A 3-1/2 in	N/A 4 in
Tube Outside Diameter (OD)	N/A 6 in	N/A 7 in	N/A 7-1/2 in	N/A 8-1/2 in	N/A 9 in
Tube Inside Diameter (ID) for Angle Face Ring (AFR)	N/A 2-3/8 in	N/A 2-7/8 in	N/A 3-5/8 in	N/A 4 in	N/A 4-5/8 in
Tube Inside Diameter (ID) for Stud End	N/A 2-1/8 in	N/A 2-5/8 in	N/A 3-1/8 in	N/A 3-5/8 in	N/A 4-1/8 in
Tube Thickness (T)	N/A 1/2 in
Number of Bores (BH) for Tube	N/A 4	N/A 4	N/A 4	N/A 8	N/A 8
Bore Size (BH) for Tube	N/A 3/4 in
Dimension (BCD) for Tube	N/A 4-3/4 in	N/A 5-1/2 in	N/A 6 in	N/A 7 in	N/A 7-1/2 in
Material¹	N/A 304L Stainless Steel 316L Stainless Steel 317L Stainless Steel Carbon Steel
Type	N/A Back-Up Plate
Additional Information	N/A Manufactured from A57M AZ40 stainless steel plate. Back-up [plate] flange is used in conjunction with an angle face ring., flat face ring, or stud end to form a "Van Stone" joint allowing the flange infinite positioning as it spins freely behind the ring/stud-end; (see back-up flange).
¹ Others upon request.