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Threaded Flanges – Class 300

Threaded Flanges

Class 300

  Nominal size O C R X Y T Q No. of holes Diam. of holes Diam. of bolts Diam. of bolt circle Approx. weight pounds Kg
    O C R X Y T Q          
in. 1/2″ 3.75 0.56 1.38 1.5 0.88 0.62 0.93 4 0.62 1/2″ 2.62 2
mm.   95.3 14.2 35.1 38.1 22.4 15.7 23.6   15.7 12.7 66.5 1
in. 3/4″ 4.62 0.62 1.69 1.88 1 0.62 1.14 4 0.75 5/8″ 3.25 3
mm.   117.3 15.7 42.9 47.8 25.4 15.7 29   19.1 15.9 82.6 1
in. 1″ 4.88 0.69 2 2.12 1.06 0.69 1.41 4 0.75 5/8″ 3.5 3
mm.   124 17.5 50.8 53.8 26.9 17.5 35.8   19.1 15.9 88.9 1
in. 1 1/4″ 5.25 0.75 2.5 2.5 1.06 0.81 1.75 4 0.75 5/8″ 3.88 4
mm.   133.4 19.1 63.5 63.5 26.9 20.6 44.5   19.1 15.9 98.6 2
in. 1 1/2″ 6.12 0.81 2.88 2.75 1.19 0.88 1.99 4 0.88 3/4″ 4.5 6
mm.   155.4 20.6 73.2 69.9 30.2 22.4 50.5   22.4 19.1 114.3 3
in. 2″ 6.5 0.88 3.62 3.31 1.31 1.12 2.5 8 0.75 5/8″ 5 7
mm.   165.1 22.4 91.9 84.1 33.3 28.4 63.5   19.1 15.9 127 3
in. 2 1/2″ 7.5 1 4.12 3.94 1.5 1.25 3 8 0.88 3/4″ 5.88 10
mm.   190.5 25.4 104.6 100.1 38.1 31.8 76.2   22.4 19.1 149.4 5
in. 3″ 8.25 1.12 5 4.62 1.69 1.25 3.63 8 0.88 3/4″ 6.62 13
mm.   209.6 28.4 127 117.3 42.9 31.8 92.2   22.4 19.1 168.1 6
in. 3 1/2″ 9 1.19 5.5 5.25 1.75 1.44 4.13 8 0.88 3/4″ 7.25 17
mm.   228.6 30.2 139.7 133.4 44.5 36.6 104.9   22.4 19.1 184.2 8
in. 4″ 10 1.25 6.19 5.75 1.88 1.44 4.63 8 0.88 3/4″ 7.88 22
mm.   254 31.8 157.2 146.1 47.8 36.6 117.6   22.4 19.1 200.2 10
in. 5″ 11 1.38 7.31 7 2 1.69 5.69 8 0.88 3/4″ 9.25 28
mm.   279.4 35.1 185.7 177.8 50.8 42.9 144.5   22.4 19.1 235 13
in. 6″ 12.5 1.44 8.5 8.12 2.06 1.81 6.75 12 0.88 3/4″ 10.62 39
mm.   317.5 36.6 215.9 206.2 52.3 46 171.5   22.4 19.1 269.7 18
in. 8″ 15 1.62 10.62 10.25 2.44 2 8.75 12 1 7/8″ 13 58
mm.   381 41.1 269.7 260.4 62 50.8 222.3   25.4 22.2 330.2 26
in. 10″ 17.5 1.88 12.75 12.62 2.62 2.19 10.88 16 1.12 1″ 15.25 81
mm.   444.5 47.8 323.9 320.5 66.5 55.6 276.4   28.4 25.4 387.4 37
in. 12″ 20.5 2 15 14.75 2.88 2.38 12.94 16 1.25 1 1/8″ 17.75 115
mm.   520.7 50.8 381 374.7 73.2 60.5 328.7   31.8 28.6 450.9 52
in. 14″ 23 2.12 16.25 16.75 3 2.5 14.19 20 1.25 1 1/8″ 20.25 165
mm.   584.2 53.8 412.8 425.5 76.2 63.5 360.4   31.8 28.6 514.4 75
in. 16″ 25.5 2.25 18.5 19 3.25 2.69 16.19 20 1.38 1 1/4″ 22.5 190
mm.   647.7 57.2 469.9 482.6 82.6 68.3 411.2   35.1 31.8 571.5 86
in. 18″ 28 2.38 21 21 3.5 2.75 18.19 24 1.38 1 1/4″ 24.75 250
mm.   711.2 60.5 533.4 533.4 88.9 69.9 462   35.1 31.8 628.7 113
in. 20″ 30.5 2.5 23 23.12 3.75 2.88 20.19 24 1.38 1 1/4″ 27 315
mm.   774.7 63.5 584.2 587.2 95.3 73.2 512.8   35.1 31.8 685.8 143
in. 24″ 36 2.75 27.25 27.62 4.19 3.25 24.19 24 1.62 1 1/2″ 32 475
mm.   914.4 69.9 692.2 701.5 106.4 82.6 614.4   41.1 38.1 812.8 215
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