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Class 2500 Standard Connections Flanges

Long Weld Neck "LWN"

Heavy Barrel "HB"

Equal Barrel "E"

SizeFlangeBarrel ODBoltingNutStud BoltWeightsLength
NomBore LWN & EBore HBODThkRF of ODLWNHBE# ofHolesHole SizeBolt CircleStop DiaRelief DiaRelief LengthSizeRF LengthRTJ LengthLWNHBEBase
BTDDDCNSNRNLBasePer 1″BasePer 1″BasePer 1″
 1/20.50.555.251.191.381.812.255.2540.883.52.251.8113/4 4 3/44 3/4110.7141.1456.19
 3/40.750.745.51.251.692.062.55.540.883.752.52.0613/4 5   5   130.8171.3496.69
110.966.251.3822.252.816.25414.252.812.251.127/8 5 1/25 1/2180.9221.6628.59
1 1/41.251.287.251.52.52.883.57.2541.125.123.52.881.2516   6   271.5322.484119
1 1/21.51.581.752.883.123.94841.255.753.943.121.381 1/8 6 3/46 3/4331.742394149
221.949.2523.623.755.129.2581.126.755.123.751.2517   7   482.2665131189
2 1/22.52.3210.52.254.124.55.9410.581.257.755.944.51.381 1/8 7 3/48   663.1906.7165239
332.9122.6255.2571281.38975.251.51 1/4 8 3/49   974.11279210309
443.831436.196.58.381481.6210.758.386.51.751 1/2 10   10 1/41595.8218123914012
554.8116.53.627.3181016.581.8812.7510821 3/4 11 3/412 1/42488.7319175185512
665.76194.258.59.2511.381982.1214.511.389.252.25213 1/214   35811441216417312
887.6221.75510.621214.1221.75122.1217.2514.12122.25215   15 1/2589187433111679216
10109.5626.56.512.7514.7517.3826.50122.6221.2517.3814.752.752 1/2 19 1/420   99726120247162513416
121211.38307.251517.3820.1230122.8824.3820.1217.3832 3/4 21 1/422   136335160961199516816

Dimensions are in inches. Weights are in pounds.
Class 2500 Standard Connection Flange PDF (for printing).