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Page 1 of 12API SPEC 6A, 16A, 17D AND MSSFLANGE GASKET, BOLT AND TORQUE REFERENCE CHARTTRADEMARKREG. U.S. PATENT OFFICECustomers may order WOODCO USA Pressure Control Equipmentwith ABS or DNV Certification or with Dual Certification. 2017 WWW.WOODCOUSA.COMWOODCO 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.FOR FURTHER INFORMATION, OR TO LEARN MORE ABOUT WOODCO USAPRODUCTS 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

Page 2 of 12Flange Reference ChartTorque values shown on this page apply only to API Spec 6A and 16A designated flanges,for surface applications.For make-up torque for Fluoropolymer coated B7/L7 bolts and 2H nuts, see page 10 of this document.Refer to 17D Torque Chart on page 11 when using 6BX Flanges for Subsea ApplicationsSee page 12 of this document for important notes.Flange SizeRingGasketNumber ofBoltsStud BoltTap End Stud1-13/16" 10MBX-15183/4" x 5-1/2"3/4 x 3-3/4"1-1/4"2001-13/16" 10M6BX TO 17SVBX-151SBX-15183/4" x 6-1/2"3/4 x 4-3/4"1-1/4"SeePage 111-13/16" 15MBX-15187/8" x 6"7/8" x 4-1/8"1-7/16"3191-13/16" 20MBX-15181" x 7-3/4"1" x 5-1/8"1-5/8"4742-1/16" 2M***R-23 orRX-2385/8" x 5"5/8" x 3-5/8"1-1/16"1152-1/16" 3M***R-24 orRX-2487/8" x 6-1/2"7/8" x 4-5/8"1-7/16"3192-1/16" 5M***R-24 orRX-2487/8" x 6-1/2"7/8" x 4-5/8"1-7/16"3192-1/16" 5M17 SS TO SSBX-152SBX-15287/8" x 6"7/8" x 4-1/4"1-7/16"SeePage 112-1/16" 5M17 SS TO SVBX-152SBX-15287/8" x 7"7/8" x 5"1-7/16"SeePage 112-1/16" 10MBX-15283/4" x 5-1/2"3/4" x 3-7/8"1-1/4"200BX-152SBX-15283/4" x 6-1/2"3/4" x 4-3/4"1-1/4"SeePage 112-1/16" 15MBX-15287/8" x 6-1/2"7/8" x 4-3/8"1-7/16"3192-1/16" 20MBX-15281-1/8" x 8-1/2"1-1/8" x 5-3/4"1-13/16"6862-9/16" 2M***R-26 orRX-2683/4" x 5-1/2"3/4" x 4"1-1/4"2002-1/16" 10M6BX TO 17SVWrench Torque*SizeFt. Lbs.* Make-up torque for "black" or "plated" B7/L7 bolts and 2H nuts using API BUL 5A3 / ISO 13678thread compound. These torque values assume undamaged bolts, clean conditions and smoothbearing surfaces with generous lubrication of threads and bearing faces on nuts.***These current flanges previously had old API size and series designations. See Flange CrossReference Chart on the WOODCO USA website. 2017 WWW.WOODCOUSA.COM

Page 3 of 12Flange Reference ChartTorque values shown on this page apply only to API Spec 6A and 16A designated flanges,for surface applications.For make-up torque for Fluoropolymer coated B7/L7 bolts and 2H nuts, see page 10 of this document.Refer to 17D Torque Chart on page 11 when using 6BX Flanges for Subsea ApplicationsSee page 12 of this document for important notes.Flange SizeRingGasketNumber ofBoltsStud BoltTap End Stud2-9/16" 3M***R-27 orRX-2781" x 7"1" x 5-1/8"1-5/8"4742-9/16" 5M***R-27 orRX-2781" x 7"1" x 5-1/8"1-5/8"4742-9/16" 5M17 SS TO SSBX-153SBX-15381" x 6-1/2"1" x 4-5/8"1-5/8"SeePage 112-9/16" 5M17 SS TO SVBX-153SBX-15381" x 7-1/4"1" x 5-3/8"1-5/8"SeePage 112-9/16" 10MBX-15387/8" x 6-1/2"7/8" x 4-3/8"1-7/16"319BX-153SBX-15387/8" x 7-1/4"7/8" x 5"1-7/16"SeePage 112-9/16" 15MBX-15381" x 7-1/4"1" x 4-7/8"1-5/8"4742-9/16" 20MBX-15381-1/4" x 9-1/2"1-1/4" x 6-1/4"2"9533-1/8" 2M***R-31 orRX-3183/4" x 5-3/4"3/4" x 4-1/8"1-1/4"2003-1/8 3M***R-31 orRX-3187/8" x 6-1/2"7/8" x 4-5/8"1-7/16"3193-1/8" 5M***R-35 orRX-3581-1/8" x 7-3/4"1-1/8" x 5-5/8"1-13/16"6863-1/8" 5M17 SS TO SSBX-154SBX-15481-1/8" x 7-1/4"1-1/8" x 5-1/8"1-13/16"SeePage 113-1/8" 5M17 SS TO SVBX-154SBX-15481-1/8" x 8"1-1/8" x 5-3/4"1-13/16"SeePage 112-9/16" 10M6BX TO 17SVWrench Torque*SizeFt. Lbs.* Make-up torque for "black" or "plated" B7/L7 bolts and 2H nuts using API BUL 5A3 / ISO 13678thread compound. These torque values assume undamaged bolts, clean conditions and smoothbearing surfaces with generous lubrication of threads and bearing faces on nuts.***These current flanges previously had old API size and series designations. See Flange CrossReference Chart on the WOODCO USA website. 2017 WWW.WOODCOUSA.COM

Page 4 of 12Flange Reference ChartTorque values shown on this page apply only to API Spec 6A and 16A designated flanges,for surface applications.For make-up torque for Fluoropolymer coated B7/L7 bolts and 2H nuts, see page 10 of this document.Refer to 17D Torque Chart on page 11 when using 6BX Flanges for Subsea ApplicationsSee page 12 of this document for important notes.RingGasketNumber ofBoltsStud BoltTap End StudBX-15481" x 7-1/4"1" x 5"1-5/8"474BX-154SBX-15481" x 8"1" x 5-3/4"1-5/8"SeePage 113-1/16" 15MBX-15481-1/8" x 8"1-1/8" x 5-1/2"1-13/16"6863-1/16" 20MBX-15481-3/8" x 10-1/4"1-3/8" x 6-3/4"2-3/16"1,2814-1/16" 2M***R-37 orRX-3787/8" x 6-1/2"7/8" x 4-5/8"1-7/16"3194-1/16" 3M***R-37 orRX-3781-1/8" x 7-1/2"1-1/8" x 5-1/2"1-13/16"6864-1/16" 5M***R-39 orRX-3981-1/4" x 8-1/2"1-1/4" x 6-1/8"2"9534-1/16" 5M17 SS TO SSBX-155SBX-15581-1/4" x 8"1-1/4" x 5-5/8"2"SeePage 114-1/16" 5M17 SS TO SVBX-155SBX-15581-1/4" x 8-3/4"1-1/4" x 6-1/4"2"SeePage 114-1/16" 10MBX-15581-1/8" x 8-1/2"1-1/8" x 5-3/4"1-13/16"686BX-155SBX-15581-1/8" x 9-1/2"1-1/8" x 6-5/8"1-13/16"SeePage 11BX-15581-3/8" x 9-3/4"1-3/8" x 6-1/2"2-3/16"1,281Flange Size3-1/16" 10M3-1/16" 10M6BX TO 17SV4-1/16" 10M6BX TO 17SV4-1/16" 15MWrench Torque*SizeFt. Lbs.* Make-up torque for "black" or "plated" B7/L7 bolts and 2H nuts using API BUL 5A3 / ISO 13678thread compound. These torque values assume undamaged bolts, clean conditions and smoothbearing surfaces with generous lubrication of threads and bearing faces on nuts.***These current flanges previously had old API size and series designations. See Flange CrossReference Chart on the WOODCO USA website. 2017 WWW.WOODCOUSA.COM

Page 5 of 12Flange Reference ChartTorque values shown on this page apply only to API Spec 6A and 16A designated flanges,for surface applications.For make-up torque for Fluoropolymer coated B7/L7 bolts and 2H nuts, see page 10 of this document.Refer to 17D Torque Chart on page 11 when using 6BX Flanges for Subsea ApplicationsSee page 12 of this document for important notes.RingGasketNumber ofBoltsStud BoltTap End Stud4-1/16" 20MBX-15581-3/4" x 12-1/2"1-3/4" x 8-3/8"2-3/4"2,6965-1/8" 2M***R-41 orRX-4181" x 7-1/4"1" x 5-1/4"1-5/8"4745-1/8" 3M***R-41 orRX-4181-1/4" x 8-1/4"1-1/4" x 6"2"9535-1/8" 5M***R-44 orRX-4481-1/2" x 10-1/2"1-1/2" x 7-3/8"2-3/8"1,6775-1/8" 5M17 SS TO SSBX-169SBX-16981-1/2" x 10"1-1/2" x 6-7/8"2-3/8"SeePage 115-1/8" 5M17 SS TO SVBX-169SBX-16981-1/2" x 11"1-1/2" x 7-3/4"2-3/8"SeePage 11BX-169121-1/8" x 9-1/4"1-1/8" x 6"1-13/16"686BX-169SBX-169121-1/8" x 10-1/4"1-1/8" x 7"1-13/16"SeePage 115-1/8" 15MBX-169121-1/2" x 11-1/2"1-1/2" x 7-5/8"2-3/8"1,6777-1/16" 2M***R-45 orRX-45121" x 7-1/2"1" x 5-3/8"1-5/8"4747-1/16" 3M***R-45 orRX-45121-1/8" x 8-1/2"1-1/8" x 5-7/8"1-13/16"6867-1/16" 5M***R-46 orRX-46121-3/8" x 11-1/4"1-3/8" x 7-1/2"2-3/16"1,281Flange Size5-1/8" 10M5-1/8" 10M6BX TO 17SVWrench Torque*SizeFt. Lbs.* Make-up torque for "black" or "plated" B7/L7 bolts and 2H nuts using API BUL 5A3 / ISO 13678thread compound. These torque values assume undamaged bolts, clean conditions and smoothbearing surfaces with generous lubrication of threads and bearing faces on nuts.***These current flanges previously had old API size and series designations. See Flange CrossReference Chart on the WOODCO USA website. 2017 WWW.WOODCOUSA.COM

Page 6 of 12Flange Reference ChartTorque values shown on this page apply only to API Spec 6A and 16A designated flanges,for surface applications.For make-up torque for Fluoropolymer coated B7/L7 bolts and 2H nuts, see page 10 of this document.Refer to 17D Torque Chart on page 11 when using 6BX Flanges for Subsea ApplicationsSee page 12 of this document for important notes.Flange SizeRingGasketNumber ofBoltsStud BoltTap End Stud7-1/16" 5M17 SS TO SSBX-156SBX-156121-3/8" x 10-3/4"1-3/8" x 7"2-3/16"SeePage 117-1/16" 5M17 SS TO SVBX-156SBX-156121-3/8" x 11-3/4"1-3/8" x 8-1/8"2-3/16"SeePage 117-1/16" 10MBX-156121-1/2" x 11-3/4"1-1/2" x 7-3/4"2-3/8"1,677BX-156SBX-156121-1/2" x 13"1-1/2" x 9"2-3/8"SeePage 117-1/16" 15MBX-156161-1/2" x 13"1-1/2" x 8-3/8"2-3/8"1,6777-1/16" 20MBX-156162" x 17-3/4"2" x 11-1/8"3-1/8"4,0619" 2M***R-49 orRX-49121-1/8" x 8-1/2"1-1/8" x 5-7/8"1-13/16"6869" 3M***R-49 orRX-49121-3/8" x 9-1/2"1-3/8" x 6-3/4"2-3/16"1,2819" 5M***R-50 orRX-50121-5/8" x 12-1/2"1-5/8" x 8-1/2"2-9/16"2,1469" 5M17 SS TO SSBX-157SBX-157121-5/8" x 12"1-5/8" x 8"2-9/16"SeePage 119" 5M17 SS TO SVBX-157SBX-157121-5/8" x 13-1/4"1-5/8" x 9-1/8"2-9/16"SeePage 11BX-157161-1/2" x 13-1/2"1-1/2" x 8-1/2"2-3/8"1,6777-1/16" 10M6BX TO 17SV9" 10MWrench Torque*SizeFt. Lbs.* Make-up torque for "black" or "plated" B7/L7 bolts and 2H nuts using API BUL 5A3 / ISO 13678thread compound. These torque values assume undamaged bolts, clean conditions and smoothbearing surfaces with generous lubrication of threads and bearing faces on nuts.***These current flanges previously had old API size and series designations. See Flange CrossReference Chart on the WOODCO USA website. 2017 WWW.WOODCOUSA.COM

Page 7 of 12Flange Reference ChartTorque values shown on this page apply only to API Spec 6A and 16A designated flanges,for surface applications.For make-up torque for Fluoropolymer coated B7/L7 bolts and 2H nuts, see page 10 of this document.Refer to 17D Torque Chart on page 11 when using 6BX Flanges for Subsea ApplicationsSee page 12 of this document for important notes.Flange SizeRingGasketNumber ofBoltsStud BoltTap End Stud9" 10M6BX TO 17SVBX-157SBX-157161-1/2" x 15"1-1/2" x 10-1/8"2-3/8"SeePage 119" 15MBX-157161-7/8" x 16"1-7/8" x 10-1/8"2-15/16"3,3329" 20MBX-157162-1/2" x 21-3/42-1/2" x 13-3/4"3-7/8"8,03011" 2M***R-53 orRX-53161-1/4" x 9-1/4"1-1/4" x 6-1/2"2"95311" 3M***R-53 orRX-53161-3/8" x 10"1-3/8" x 7"2-3/16"1,28111" 5M***R-54 orRX-54121-7/8" x 14-1/4"1-7/8" x 9-5/8"2-15/16"3,33211" 5M17 SS TO SSBX-158SBX-158121-7/8" x 13-3/4"1-7/8" x 9-1/8"2-15/16"SeePage 1111" 5M17 SS TO SVBX-158SBX-158121-7/8" x 15-1/4"1-7/8" x 10-1/2"2-15/16"SeePage 11BX-158161-3/4" x 15-1/4"1-3/4" x 9-3/4"2-3/4"2,696BX-158SBX-158161-3/4" x 17"1-3/4" x 11-1/2"2-3/4"SeePage 1111" 15MBX-158202" x 19-1/2"2" x 12"3-1/8"4,06111" 20MBX-158162-3/4" x 23-3/4"2-3/4" x 15"4-1/4"9,71211" 10M11" 10M6BX TO 17SVWrench Torque*SizeFt. Lbs.* Make-up torque for "black" or "plated" B7/L7 bolts and 2H nuts using API BUL 5A3 / ISO 13678thread compound. These torque values assume undamaged bolts, clean conditions and smoothbearing surfaces with generous lubrication of threads and bearing faces on nuts.***These current flanges previously had old API size and series designations. See Flange CrossReference Chart on the WOODCO USA website. 2017 WWW.WOODCOUSA.COM