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Class 400 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 HBODThk.RF of ODLWNHBE# ofHolesHole SizeBolt CircleStop DiaRelief DiaRelief LengthSizeRF LengthRTJ LengthLWN HB E Base
 BTDDD  CNSNRNL   BasePer  1″BasePer  1″BasePer  1″
 1/20.50.553.750.561.381.51.753.7540.622.621.751.50.75 1/23   3   50.470.6243.19
 3/40.750.744.620.621.691.882.194.6240.753.252.191.880.88 5/83 1/23 1/280.7110.9374.69
110.964.880.6922.122.444.8840.753.52.442.120.88 5/83 1/23 1/290.8121.1405.19
1 1/41.251.285.250.812.52.52.815.2540.753.882.812.50.88 5/83 3/43 3/4131151.4455.89
1 1/21.51.56.120.882.882.753.256.1240.884.53.252.751 3/44 1/44 1/4161.2211.9617.89
221.946.513.623.313.946.580.7553.943.310.88 5/84 1/44 1/4201.5292.6688.59
2 1/22.52.327.51.124.123.944.637.580.885.884.633.941 3/44 3/44 3/4272.1393.688119
332.98.251.2554.625.388.2580.886.625.384.621 3/45   5   362.7504.6104139
3 1/23.53.3691.385.55.255.819817.255.815.251.12 7/85 1/25 1/2453.4615.5116159
443.83101.386.195.756.4410817.886.445.751.12 7/85 1/25 1/2653.8936.51971912
554.81111.57.3177.8111819.257.8171.12 7/85 3/45 3/4885.31279.12292212
665.7612.51.628.58.129.1912.512110.629.198.121.12 7/866   1106.7169122862712
887.62151.8810.6210.2511.3815121.121311.3810.251.251   6 3/46 3/41549.1233173793612
10109.5617.52.1212.7512.6213.4417.5161.2515.2513.4412.621.381 1/87 1/27 1/221813298214754612
121211.3820.52.251514.7515.7520.5161.3817.7515.7514.751.51 1/48   8   28516401286276212
141414232.3816.2516.7518.2523201.3820.2518.2516.751.51 1/48 1/48 1/433619467327587412
16161625.52.518.51920.3125.5201.522.520.31191.621 3/88 3/48 3/441823542378848812
181818282.62212122.5628241.524.7522.56211.621 3/8 99   4822664543103310212
20202030.52.752323.1224.6330.5241.622724.6323.121.751 1/2 9 1/29 3/45683075950116511812
24242436327.6227.6229.2536241.883229.2527.6221 3/410 1/211   80442104067154016012

Dimensions are in inches. Weights are in pounds.
Class 400 Standard Connection Flange PDF (for printing).