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Class 900 Standard Connections Flanges

Long Weld Neck "LWN"

Heavy Barrel "HB"

Equal Barrel "E"

Size  Flange  Barrel OD  Bolting  Nut  Stud Bolt  Weights     Length
NomBore LWN & EBore HBODThkRF of ODLWNHBE# ofHolesHole SizeBolt CircleStop DiaRelief DiaRelief LengthSizeRF LengthRTJ LengthLWN HB E Base
 BTDDD  CNSNRNL   BasePer 1″BasePer 1″BasePer 1″L
 1/20.50.554.750.881.381.5624.7540.883.2521.5613/4 4 1/44 1/480.5100.83759
 3/40.750.745.1211.691.812.255.1240.883.52.251.8113/4 4 1/24 1/2100.6131425.79
110.965.881.1222.122.565.884142.562.121.127/8 55130.8171.3547.59
1 1/41.251.286.251.122.52.52.946.25414.382.942.51.127/8 55171201.6618.39
1 1/21.51.571.252.882.753.25741.124.883.252.751.2515 1/25 1/2211.2261.977109
221.948.51.53.624.125.068.5816.55.064.121.127/8 5 3/45 3/4422.9564.9115159
2 1/22.52.329.621.624.124.885.889.6281.127.55.884.881.2516 1/46 1/4563.9756.5144199
332.99.51.5556.069.5817.56.0651.127/8 5 3/45 3/4513.6716.3139189
443.8311.51.756.196.257.4411.581.259.257.446.251.381 1/8 6 3/46 3/4935.11339.12702612
554.8113.7527.317.5913.7581.381197.51.51 1/47 1/27 1/21357194133763712
665.76152.198.59.2510.6915121.2512.510.699.251.381 1/87 1/27 3/419111259184364212
887.6218.52.510.6211.7513.3118.5121.515.513.3111.751.621 3/88 3/48 3/429716389276266212
10109.5621.52.7512.7514.516.3121.5161.518.516.3114.51.621 3/89 1/49 1/442225558398248112
121211.38243.121516.518.8124201.52118.8116.51.621 3/810   1051829715509849612
14141425.253.3816.2517.7519.6225.25201.622219.6217.751.751 1/210 3/411624268174213689816
16161627.753.518.52021.6927.75201.7524.2521.69201.881 5/811 1/411 1/27503294248157311416
1818183142122.2524.06312022724.0622.252.121 7/812 3/413 1/495038116957189814216
20202033.754.252324.526.3833.75202.1229.526.3824.52.25213 3/414 1/4112143137866218216416
242424415.527.2529.531.6241202.6235.531.6229.52.752 1/217 1/418186565216094308424616

Dimensions are in inches. Weights are in pounds.
Class 900 Standard Connection Flange PDF (for printing).