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SAPage 1 of 10API Flange Weight Reference Chart 1Includes API Spec 6A current, discontinued, and obsolete flangesDCOUTRADEMARKREG. U.S. PATENT OFFICETerms of Use and Copyright 2017 www.woodcousa.comOOInformation above, and in other parts of this Web Site, may help persons who reallyseek to know. If you have a question, or need a quote, please use our Contact Us linkand give us a chance to help. Send WOODCO USA some business.WOODCO USA provides Web Site Tools for identification, estimating, and referenceonly. Do not use this information for manufacturing or inspection. Users of these toolsshould not use them as a substitute for professional engineering advice. Anyone makinguse of the information presented does so at his own risk and assumes any and all liabilityresulting from such use. WFOR FURTHER INFORMATION, OR TO LEARN MORE ABOUTWOODCO USA BRAND PRODUCTS AND SERVICES,CONTACT:WOODCO USAP.O. Box 1261Houston, Texas 77251-1261Phone: 713-672-9491U.S. and Canada: 1-800-496-6326Fax: 713-672-8768www.woodcousa.comsales@woodcousa.com
SAPage 2 of 10API Flange Weight Reference Chart 129.61-11/16-10M *19.51-11/16-15M *24.01-25/32-10M2-1/2" 2900 *44.41-13/16-2M *9.81-13/16-3M *16.01-13/16-5M X-1510.33110.4114.1835.021.4BX-1510.33 W1-13/16-10MR-8528.5OO1-5/8-10M /2"-2900 *DCOUIncludes API Spec 6A current, discontinued, and obsolete flangesSee page 9 of this document for important notes.Weight forWeight forRing Gasket1 Set of AllWeldNumber1 Set ofBlindThreadAPI 6ANeckof StudTap EndWeightStud BoltsFlange SizeWeightBolts perStuds withWeightLbs.with 2 nutsLbs.set1 nut each M1-13/16-20M1-13/16-30M *2" 960 8.927.2812.27.72-1/16-5M29.627.2812.27.7Terms of Use and Copyright 2017 www.woodcousa.com
SAPage 3 of 10API Flange Weight Reference Chart /16-30M *126.82-1/2" 960 *16.52-9/16-2M16.92-9/16-3M2-9/16-5M2-9/16-10M /3-1/2" 2900 11.188.889.9837.423.239.047.5812.27.4BX-1530.62 W2-9/16-10MR-8761.2OO2-1/16-10M /3" 2900 *DCOUIncludes API Spec 6A current, discontinued, and obsolete flangesSee page 9 of this document for important notes.Weight forWeight forRing Gasket1 Set of AllWeldNumber1 Set ofBlindThreadAPI 6ANeckof StudTap EndWeightStud BoltsFlange SizeWeightBolts perStuds withWeightLbs.with 2 nutsLbs.set1 nut each 9/16-30M *175.8185.41257.934.4BX-1530.623" 960 *21.324.287.95.0R-311.14RX-311.77Terms of Use and Copyright 2017 www.woodcousa.com
SAPage 4 of 10API Flange Weight Reference Chart 1Includes API Spec 6A current, discontinued, and obsolete flangesSee page 9 of this document for important notes.Weight for1 Set of AllNumberThreadof StudStud BoltsBolts perwith 2 nutsseteachLbs.Weight for1 Set ofTap EndStuds with1 nut -10M4" 2900 15M75.789.183-1/16-30M *4" 960 RX-372.13R-391.49RX-392.31R-904.51RX-906.84 W4-1/16-2MOO3-1/16-20MRing GasketDCOUAPI 6AFlange 1/16-5M78.476.2833.221.14-1/16-10M /5" 2900 *167.9169.1880.950.5Terms of Use and Copyright 2017 www.woodcousa.com
SAPage 5 of 10API Flange Weight Reference Chart 1Includes API Spec 6A current, discontinued, and obsolete flangesSee page 9 of this document for important notes.Weight for1 Set of AllNumberThreadof StudStud BoltsBolts perwith 2 6-30M *500.65" 960 *42.65-1/8-2M75.15-1/8-3M92.1Ring 11.7R-451.94RX-453.01 W5-1/8-5MWeight for1 Set ofTap EndStuds with1 nut eachLbs.DCOUAPI 6AFlange M5-1/8-15M6" 960 8.824.17-1/16-5M176.3176.61274.545.67-1/16-10M /10" 2900 *480.1480.012235.9144.9Terms of Use and Copyright 2017 www.woodcousa.com
SAPage 6 of 10API Flange Weight Reference Chart 1Includes API Spec 6A current, discontinued, and obsolete flangesSee page 9 of this document for important notes.Weight for1 Set of AllNumberThreadof StudStud BoltsBolts perwith 2 1/16-30M *1779.48" 960 *85.49-2M130.29-3M204.5Weight for1 Set ofTap EndStuds with1 nut eachLbs.Ring GasketDCOUAPI 6AFlange .1BX-1576.401738.01651.816632.1375.8BX-1576.4010" 960 057.9R-532.97RX-534.639-5M9-10M9-15M W9-20MOONumberTerms of Use and Copyright 2017 www.woodcousa.com
SAPage 7 of 10API Flange Weight Reference Chart 1Includes API Spec 6A current, discontinued, and obsolete flangesSee page 9 of this document for important notes.Weight for1 Set of AllNumberThreadof StudStud BoltsBolts perwith 2 nutsseteachLbs.Weight for1 Set ofTap EndStuds with1 nut 235.72198.312" 960 *169.213-5/8-2M***13-5/8-5M /14" 1500 696.7BX-1606.641236.91329.320349.6205.1BX-15914.08 W13-5/8-10MNumberOO13-5/8-3MRing GasketDCOUAPI 6AFlange .2BX-15914.0816" 960 *515.020148.393.1R-654.31RX-656.71Terms of Use and Copyright 2017 www.woodcousa.com
SAPage 8 of 10API Flange Weight Reference Chart 1Includes API Spec 6A current, discontinued, and obsolete flangesSee page 9 of this document for important notes.Weight for1 Set of AllNumberThreadof StudStud BoltsBolts perwith 2 nutsseteachLbs.Weight for1 Set ofTap EndStuds with1 nut 12417-3/4-2M ****649.217-3/4-3M ****18-3/4-5M18-3/4-10M20" 960 59RX-7311.65R-7412.91RX-7422.05 W21-1/4-2MNumberOO18-3/4-15MRing GasketDCOUAPI 6AFlange 02566.024486.4287.3BX-16822.23Terms of Use and Copyright 2017 www.woodcousa.com
SAPage 9 of 10API Flange Weight Reference Chart 1Includes API Spec 6A current, discontinued, and obsolete flangesSee important notes below.Weight for1 Set of AllNumberThreadof StudStud BoltsBolts perwith 2 nutsseteachLbs.BlindWeightLbs.30" 300# MSS **1055.91694.628347.630" 600# MSS **1426.22516.72830" 900# MSS **2323.43816.830-2M1691.430-3M2457.8Weight for1 Set ofTap EndStuds with1 nut eachLbs.Ring GasketDCOUAPI 6AFlange 57* API discontinued or obsolete flange.** MSS flanges used primarily on Diverter BOP's of 500 psi and 1,000 psi working pressure.***API has not specified a weld neck for 6B flanges larger than 11” 5M and WOODCO USA has noOOentry on this table for these flanges.API has specified weld necks for many 6BX flanges, and not done so for many others, but APIhas provided the basis for determining the dimensions of a 6BX integral flange that themanufacturer may attach to a body by welding. WOODCO USA has used API specifieddimensions to calculate all the flange weights shown on this table. All weights rounded to thenearest 1/10 lb., except ring gaskets, shown in pounds with decimals to 2 places. WVarious tolerances contribute to significant differences in weights. Most API 6A manufacturersthat only make flanges, make 6B weld neck flanges with raised faces, while most API 6Awellhead manufacturers make all of their API 6B flanges, weld neck or otherwise, with full faces.All 6BX flanges must have a raised face, but API specifies a minimum raised face of 1/8" height,with a maximum height equal to the ring groove depth. More recently API 6A has increased thetolerance on bolt holes, adding further variation to weight. The calculated weights for flangesshown in this table consider the flanges to have the maximum weight based on the tolerancelimits specified by API. Consider all flange weights shown as approximate.Only the weight of 3 ring gasket profiles, R (Oval), RX and BX appear on this table, considerweights for R (Octagonal), SRX and SBX as virtually the same.Terms of Use and Copyright 2017 www.woodcousa.com
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API Flange Weight Reference Chart 1 Includes API Spec 6A current, discontinued, and obsolete flanges See page 9 of this document for important notes. API 6A Flange Size Weld Neck Weight Lbs. Blind Weight Lbs. Number of Stud Bolts per set Weight for 1 Set of All Thread Stud Bolts with 2 nuts each Lbs. Weight for 1 Set of Tap End Studs with 1 nut each Lbs.
