Standard dimensions for joints and holes | ||||||||||
Nominal Electrode Diameter (mm)(inch) |
Thread Designation | Diameter Max. (mm) |
Length Max. (mm) |
Depth of socket Min. (mm) |
Average Weight (kg) |
Other Designation | ||||
IEC | Diameter | Length | ||||||||
3TPI (Pich of Thread: 8.467mm) |
300 | 12 | 10T3 | 155.57 | 220 | 116 | 5 | N155T3N | 6.125 | 8.66 |
12T3 | 177.16 | 270.9 | 141.5 | 8.2 | N177T3N | 6.975 | 10.66 | |||
350 | 14 | 12T3 | 177.16 | 270.9 | 141.5 | 8.2 | N177T3N | 6.975 | 10.66 | |
14T3 | 215.9 | 304.8 | 158.4 | 14.5 | N215T3N | 8.5 | 12 | |||
14T3L | 215.9 | 355.6 | 183.8 | 17 | N215T3L | 8.5 | 14 | |||
400 | 16 | 14T3 | 215.9 | 304.8 | 158.4 | 14.5 | N215T3N | 8.5 | 12 | |
14T3L | 215.9 | 355.6 | 183.8 | 17 | N215T3L | 8.5 | 14 | |||
16T3 | 241.3 | 338.7 | 175.3 | 20.5 | N241T3N | 9.5 | 13.33 | |||
16T3L | 241.3 | 355.6 | 183.8 | 21 | N241T3L | 9.5 | 14 | |||
450 | 18 | 16T3 | 241.3 | 338.7 | 175.3 | 20.5 | N241T3N | 9.5 | 13.33 | |
16T3L | 241.3 | 355.6 | 183.8 | 21 | N241T3L | 9.5 | 14 | |||
18T3 | 273.05 | 355.6 | 183.8 | 28 | N273T3N | 10.75 | 14 | |||
18T3L | 273.05 | 457.2 | 234.6 | 34 | N273T3L | 10.75 | 18 | |||
500 | 20 | 18T3 | 273.05 | 355.6 | 183.8 | 28 | N273T3N | 10.75 | 14 | |
18T3L | 273.05 | 457.2 | 234.6 | 34 | N273T3L | 10.75 | 18 | |||
20T3 | 298.45 | 372.5 | 192.2 | 36 | N298T3N | 11.75 | 14.66 | |||
4TPI (Pich of Thread:6.350mm) |
300 | 12 | 12T4 | 177.8 | 215.9 | 114 | 7.2 | N177T4N | 7 | 8.5 |
350 | 14 | 14T4 | 203.2 | 254 | 133 | 11.2 | N203T4N | 8 | 10 | |
400 | 16 | 16T4 | 222.25 | 304.8 | 158.4 | 15.5 | N222T4N | 8.75 | 12 | |
16T4L | 222.25 | 355.6 | 183.8 | 17.4 | N222T4L | 8.75 | 14 | |||
18T4 | 241.3 | 304.8 | 158.4 | 19 | N241T4N | 9.5 | 12 | |||
18T4L | 241.3 | 355.6 | 183.8 | 21 | N241T4L | 9.5 | 14 | |||
450 | 18 | 18T4 | 241.3 | 304.8 | 158.4 | 19 | N241T4N | 9.5 | 12 | |
18T4L | 241.3 | 355.6 | 183.8 | 21 | N241T4L | 9.5 | 14 | |||
20T4L | 269.88 | 457.2 | 234.6 | 33.4 | N269T4N | 10.625 | 18 | |||
500 | 20 | 20T4 | 269.88 | 355.6 | 183.8 | 27.2 | N269T4N | 10.625 | 14 | |
20T4L | 269.88 | 457.2 | 234.6 | 33.4 | N269T4N | 10.625 | 18 | |||
550 | 22 | 22T4 | 298.45 | 355.6 | 183.8 | 35 | N298T4N | 11.75 | 14 | |
22T4L | 298.45 | 457.2 | 234.6 | 42.5 | N298T4L | 11.75 | 18 | |||
600 | 24 | 24T4 | 317.5 | 355.6 | 183.8 | 40 | N317T4N | 12.5 | 14 | |
24T4L | 317.5 | 457.2 | 234.6 | 48 | N317T4L | 12.5 | 18 | |||
650 | 26 | 26T4 | 355.6 | 457.2 | 234.6 | 64 | N355T4N | 14 | 18 | |
26T4L | 355.6 | 558.8 | 285.4 | 74 | N355T4L | 14 | 22 | |||
700 | 28 | 28T4 | 374.65 | 457.2 | 234.6 | 71.5 | N374T4N | 14.75 | 18 | |
28T4L | 374.65 | 558.8 | 285.4 | 84 | N374T4L | 14.75 | 22 |
Sizes of conical thread and thread socket | |||||||||
Nominal Diameter | IEC Code | Sizes of Nipple (mm) | Sizes of Socket (mm) | Thread | |||||
mm | in | D Deviation(-0.5~0) | L Deviation(-1~0) | D2 Deviation(-5~0) | I | D1 Deviation(0~0.5) | H Deviation(0~7) | mm | |
200 | 8 | 122T4N | 122.24 | 177.8 | 80 | <7 | 115.92 | 94.9 | 6.35 |
250 | 10 | 152T4N | 152.4 | 190.5 | 108 | 146.08 | 101.3 | ||
300 | 12 | 177T4N | 177.8 | 215.9 | 129.2 | 171.48 | 114 | ||
350 | 14 | 203T4N | 203.2 | 254 | 148.2 | 196.88 | 133 | ||
400 | 16 | 222T4N | 222.25 | 304.8 | 158.8 | 215.93 | 158.4 | ||
400 | 16 | 222T4L | 222.25 | 355.6 | 150 | 215.93 | 183.8 | ||
450 | 18 | 241T4N | 241.3 | 304.8 | 177.9 | 234.98 | 158.4 | ||
450 | 18 | 241T4L | 241.3 | 355.6 | 169.42 | 234.98 | 183.8 | ||
500 | 20 | 269T4N | 269.88 | 355.6 | 198 | 263.56 | 183.8 | ||
500 | 20 | 269T4L | 269.88 | 457.2 | 181.08 | 263.56 | 234.6 | ||
550 | 22 | 298T4N | 298.45 | 355.6 | 226.58 | 292.13 | 183.8 | ||
550 | 22 | 298T4L | 298.45 | 457.2 | 209.65 | 292.13 | 234.6 | ||
600 | 24 | 317T4N | 317.5 | 355.6 | 245.63 | 311.18 | 183.8 | ||
600 | 24 | 317T4L | 317.5 | 457.2 | 228.7 | 311.18 | 234.6 | ||
700 | 28 | 374T4N | 374.65 | 457.2 | 285.84 | 368.33 | 234.6 | ||
700 | 28 | 374T4L | 374.65 | 558.8 | 268.91 | 368.33 | 285.4 | ||
250 | 10 | 155T3N | 155.57 | 220 | 103.8 | <10 | 147.14 | 116 | 8.47 |
300 | 12 | 177T3N | 177.16 | 270.9 | 116.9 | 168.73 | 141.5 | ||
350 | 14 | 215T3N | 215.9 | 304.8 | 150 | 207.47 | 158.4 | ||
400 | 16 | 241T3N | 241.3 | 338.7 | 169.8 | 232.87 | 175.3 | ||
450 | 18 | 273T3N | 273.05 | 355.6 | 198.7 | 264.62 | 183.8 | ||
500 | 20 | 298T3N | 298.45 | 372.6 | 221.3 | 290.02 | 192.2 |