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  • All dimensions are in inches.
  • These flanges will be furnished with a 1/4" raised face unless otherwise specified.
  • Flat face option available.

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ANSI B16.5 Class 400 Blind flange
Unit of Measure
1 

Item #

Nominal Pipe Size

Outside Diameter (O)

Thickness (T)

Raised Face Diameter (R)

Approximate Weight

Bolt Circle (C)

Number of Holes

Diameter of Holes

0H2500BDAN N/A 1/2 N/A 5.25 in N/A 1.19 in N/A 1.38 in N/A 7 lb N/A 3.50 in N/A 4 N/A 0.88 in
3Q2500BDAN N/A 3/4 N/A 5.50 in N/A 1.25 in N/A 1.69 in N/A 8 lb N/A 3.75 in N/A 4 N/A 0.88 in
012500BDAN N/A 1 N/A 6.25 in N/A 1.38 in N/A 2.00 in N/A 11 lb N/A 4.25 in N/A 4 N/A 1.00 in
1Q2500BDAN N/A 1 1/4 N/A 7.25 in N/A 1.50 in N/A 2.50 in N/A 17 lb N/A 5.13 in N/A 4 N/A 1.13 in
1H2500BDAN N/A 1 1/2 N/A 8.00 in N/A 1.75 in N/A 2.88 in N/A 23 lb N/A 5.75 in N/A 4 N/A 1.25 in
022500BDAN N/A 2 N/A 9.25 in N/A 2.00 in N/A 3.63 in N/A 39 lb N/A 6.75 in N/A 8 N/A 1.13 in
2H2500BDAN N/A 2 1/2 N/A 10.50 in N/A 2.25 in N/A 4.13 in N/A 56 lb N/A 7.75 in N/A 8 N/A 1.25 in
032500BDAN N/A 3 N/A 12.00 in N/A 2.63 in N/A 5.00 in N/A 86 lb N/A 9.00 in N/A 8 N/A 1.38 in
042500BDAN N/A 4 N/A 14.00 in N/A 3.00 in N/A 6.19 in N/A 135 lb N/A 10.75 in N/A 8 N/A 1.63 in
052500BDAN N/A 5 N/A 16.50 in N/A 3.63 in N/A 7.31 in N/A 225 lb N/A 12.75 in N/A 8 N/A 1.88 in
062500BDAN N/A 6 N/A 19.00 in N/A 4.25 in N/A 8.50 in N/A 345 lb N/A 14.50 in N/A 8 N/A 2.13 in
082500BDAN N/A 8 N/A 21.75 in N/A 5.00 in N/A 10.63 in N/A 530 lb N/A 17.25 in N/A 12 N/A 2.13 in
102500BDAN N/A 10 N/A 26.50 in N/A 6.50 in N/A 12.75 in N/A 1025 lb N/A 21.25 in N/A 12 N/A 2.63 in
122500BDAN N/A 12 N/A 30.00 in N/A 7.25 in N/A 15.00 in N/A 1300 lb N/A 24.38 in N/A 12 N/A 2.88 in
Unit of Measure
1