• Unless otherwise specified, dimensions are in millimeters.
  • The length of the stud bolt does not include the chamfer height.
  • ID = dependent on the pipe wall thickness, to be specified in the order.
NPSClassDIA ADIA DTHK BDIA GDIA KHNO. LDIA LStud Bolts DIA (in) Stud Bolts lgth (mm) 
NPS 1/2 – O.D. 21.3150309011.235.160.347.6415.91/255
NPS 1/2 – O.D. 21.3300389514.335.166.752.6415.91/265
NPS 1/2 – O.D. 21.3600389520.735.166.758.4415.91/275
NPS 1/2 – O.D. 21.39003812028.735.182.666.4422.23/4110
NPS 1/2 – O.D. 21.315003812028.735.182.666.4422.23/4110
NPS 1/2 – O.D. 21.325004313536.635.188.979.4422.23/4120
NPS 3/4 – O.D. 26.71503810012.842.969.952.6415.91/265
NPS 3/4 – O.D. 26.73004811515.942.982.657.6419.15/875
NPS 3/4 – O.D. 26.76004811522.342.982.663.4419.15/890
NPS 3/4 – O.D. 26.79004413031.842.988.976.4422.23/4115
NPS 3/4 – O.D. 26.715004413031.842.988.976.4422.23/4115
NPS 3/4 – O.D. 26.725005114038.242.99585.4422.23/4125
NPS 1 – O.D. 33.415049.211014.350.879.455.6415.91/265
NPS 1 – O.D. 33.43005412517.550.888.961.6419.15/875
NPS 1 – O.D. 33.46005412523.950.888.968.4419.15/890
NPS 1 – O.D. 33.4900521503550.8101.679.4425.47/8125
NPS 1 – O.D. 33.41500521503550.8101.679.4425.47/8125
NPS 1 – O.D. 33.425005716041.450.8107.495.4425.47/8140
NPS 1.1/4 – O.D. 42.21505911515.963.588.957.6415.91/270
NPS 1.1/4 – O.D. 42.230063.513519.163.598.465.6419.15/885
NPS 1.1/4 – O.D. 42.26006413527.163.598.473.4419.15/895
NPS 1.1/4 – O.D. 42.2900641603563.5111.179.4425.47/8125
NPS 1.1/4 – O.D. 42.21500641603563.5111.179.4425.47/8125
NPS 1.1/4 – O.D. 42.225007318544.563.5130101.4428.61150
NPS 1.1/2 – O.D. 48.31506512517.573.298.461.6415.91/270
NPS 1.1/2 – O.D. 48.33007015520.773.2114.368.6422.23/490
NPS 1.1/2 – O.D. 48.36007015528.773.2114.376.4422.23/4110
NPS 1.1/2 – O.D. 48.39007018038.273.2123.889.4428.61140
NPS 1.1/2 – O.D. 48.315007018038.273.2123.889.4428.61140
NPS 1.1/2 – O.D. 48.325007920550.973.2146117.4431.81.1/8170
NPS 2 – O.D. 60.31507815017.591.9120.763.6419.15/885
NPS 2 – O.D. 60.33008416520.791.912769.6819.15/890
NPS 2 – O.D. 60.36008416525.491.912779.4819.15/8110
NPS 2 – O.D. 60.390010521538.191.9165.1108.4825.47/8145
NPS 2 – O.D. 60.3150010521538.191.9165.1108.4825.47/8145
NPS 2 – O.D. 60.325009523550.991.9171.4133.4828.61180
NPS 2.1/2 – O.D. 73.01509018022.3104.6139.769.6419.15/890
NPS 2.1/2 – O.D. 73.030010019025.5104.6149.276.6822.23/4100
NPS 2.1/2 – O.D. 73.060010019035104.6149.285.4822.23/4120
NPS 2.1/2 – O.D. 73.090012524547.7104.6190.5111.4828.61160
NPS 2.1/2 – O.D. 73.0150012524547.7104.6190.5111.4828.61160
NPS 2.1/2 – O.D. 73.0250011426563.6104.6197149.4831.81.1/8195
NPS 3 – O.D. 88.915010819023.9127152.469.6419.15/890
NPS 3 – O.D. 88.930011521028.6127168.379.6822.23/4110
NPS 3 – O.D. 88.960011521038.2127168.389.4822.23/4125
NPS 3 – O.D. 88.990012724044.5127190.5108.4825.47/8145
NPS 3 – O.D. 88.9150012526554.1127205123.4831.81.1/8180
NPS 3 – O.D. 88.9250012530573.1127230174.4834.91.1/4220
NPS 3.1/2 – O.D. 101.615012221523.9139.7177.871.6819.15/890
NPS 3.1/2 – O.D. 101.630013523030.2139.7184.280.6822.23/4110
NPS 3.1/2 – O.D. 101.660013323041.4139.7184.292.4825.47/8140
NPS 3.1/2 – O.D. 101.6900
NPS 3.1/2 – O.D. 101.61500
NPS 3.1/2 – O.D. 101.62500
NPS 4 – O.D. 114.315013523023.9157.2190.576.6819.15/890
NPS 4 – O.D. 114.330014625531.8157.220085.6822.23/4115
NPS 4 – O.D. 114.360015227544.5157.2215.9108.4825.47/8145
NPS 4 – O.D. 114.390016029050.9157.2235120.4831.81.1/8170
NPS 4 – O.D. 114.3150016231060.4157.2240130.4834.91.1/4195
NPS 4 – O.D. 114.3250016535582.6157.2273196.4841.31.1/2255
NPS 5 – O.D. 141.315016425523.9185.7215.988.6822.23/495
NPS 5 – O.D. 141.330018028035185.723598.6822.23/4120
NPS 5 – O.D. 141.360018933050.9185.7266.7120.4828.61165
NPS 5 – O.D. 141.390019035057.2185.7279.4133.4834.91.1/4190
NPS 5 – O.D. 141.3150019737579.5185.7290162.4841.31.1/2250
NPS 5 – O.D. 141.3250020542098.5185.7323.8232.4847.61.3/4300
NPS 6 – O.D. 168.315019228025.5215.9241.388.6822.23/4100
NPS 6 – O.D. 168.330020632036.6215.9269.998.61222.23/4120
NPS 6 – O.D. 168.360022235554.3215.9292.1123.41228.61170
NPS 6 – O.D. 168.390023538062215.9317.5146.41231.81.1/8190
NPS 6 – O.D. 168.3150023039589215.9320177.41238.11.3/8260
NPS 6 – O.D. 168.32500235485114.4215.9368279.48542345
NPS 8 – O.D. 219.015024634528.6269.7298.5101.6822.23/4110
NPS 8 – O.D. 219.030026038041.3269.7330.2111.61225.47/8140
NPS 8 – O.D. 219.060027242062269.7349.2139.41231.81.1/8190
NPS 8 – O.D. 219.090029847069.9269.7393.7168.41238.11.3/8220
NPS 8 – O.D. 219.0150029048598.5269.7395219.41244.51.5/8290
NPS 8 – O.D. 219.02500305550133.4269.7438.1324.412542380
NPS 10 – O.D. 273.015030540530.2323.9362101.61225.47/8115
NPS 10 – O.D. 273.030032144547.7323.9387.4117.61628.61160
NPS 10 – O.D. 273.060034551069.9323.9431.8158.41634.91.1/4215
NPS 10 – O.D. 273.090036854576.3323.9469.9190.41638.11.3/8235
NPS 10 – O.D. 273.01500368585114.4323.9485260.41250.81.7/8335
NPS 10 – O.D. 273.02500375675171.5323.9539.7425.41266.72.1/2490
NPS 12 – O.D. 323.915036548531.8381431.8114.61225.47/8120
NPS 12 – O.D. 323.930037552050.9381450.8130.61631.81.1/8170
NPS 12 – O.D. 323.960040056073.1381489162.42034.91.1/4220
NPS 12 – O.D. 323.990042061085.8381533.4206.42038.11.3/8255
NPS 12 – O.D. 323.91500451675130.3381571.5289.416542375
NPS 12 – O.D. 323.92500441760190.6381619.1470.412732.3/4540
NPS 14 – O.D. 355.015040053535412.8476.3126.61228.61135
NPS 14 – O.D. 355.030042558554412.8514.4142.62031.81.1/8180
NPS 14 – O.D. 355.060043260576.3412.8527171.42038.11.3/8235
NPS 14 – O.D. 355.090045164092.2412.8558.8219.42041.31.1/2275
NPS 14 – O.D. 355.01500495750139.8412.8635304.41660.32.1/4405
NPS 14 – O.D. 355.02500
NPS 16 – O.D. 406.415045759536.6469.9539.8126.61628.61135
NPS 16 – O.D. 406.430048565057.2469.9571.5145.62034.91.1/4190
NPS 16 – O.D. 406.460049568582.6469.9603.2184.42041.31.1/2255
NPS 16 – O.D. 406.490050870595.3469.9616222.42044.51.5/8285
NPS 16 – O.D. 406.41500550825152.5469.9705317.41666.72.1/2445
NPS 16 – O.D. 406.42500
NPS 18 – O.D. 457.215050563539.7533.4577.9139.61631.81.1/8145
NPS 18 – O.D. 457.230053371060.4533.4628.6158.62434.91.1/4195
NPS 18 – O.D. 457.260054574589533.4654190.42044.51.5/8275
NPS 18 – O.D. 457.2900565785108533.4685.8235.42050.81.7/8325
NPS 18 – O.D. 457.21500597915168.4533.4775333.416732.3/4495
NPS 18 – O.D. 457.22500
NPS 20 – O.D. 508.015056070042.9584.2635144.62031.81.1/8160
NPS 20 – O.D. 508.030058777563.6584.2685.8161.62434.91.1/4205
NPS 20 – O.D. 508.060061081595.3584.2723.9196.42444.51.5/8285
NPS 20 – O.D. 508.0900622855114.4584.2749.3254.420542350
NPS 20 – O.D. 508.01500640985184.2584.2831.8362.41679.43540
NPS 20 – O.D. 508.02500
NPS 24 – O.D. 610.015066381547.7692.2749.3152.62034.91.1/4170
NPS 24 – O.D. 610.030070291569.9692.2812.8168.62441.31.1/2230
NPS 24 – O.D. 610.0600718940108692.2838.2209.42450.81.7/8330
NPS 24 – O.D. 610.09007501040146.1692.2901.7298.42066.72.1/2440
NPS 24 – O.D. 610.015007621170209.6692.2990.6412.41692.13.1/2615
NPS 24 – O.D. 610.02500