standard bolt torque chart pdf

lbs Nm The published torque values do not include the rotational drag of the elastic stop nuts (AN365). 2. IMPERIAL Grade 8 bolts, allow a torque 0000017620 00000 n 'Fa�P�v��*��g4ȵ!Ơ{�%Ƃ)�1��B��rÉ�"��*��(b�Ŋ&�� 7�΂G��;��^�x��@�� 0000018741 00000 n The torque figures are calculated in both metric (Nm] and imperial (lbf.ft) values using a choice of three commonly used bolt … should be marked according to their Bolt Grade – a classifica-tion standard in a two-digit system where the first digit refers to the minimum tensile strength in 100 N/mm2 and the second digit indicates the relation between the yield point and the minimum tensile strength. trailer <]>> startxref 0 %%EOF 30 0 obj<>stream Clamp loads for Grade C lock nuts equal 75% of the bolt … -56Y� Z�ўc��-h NOTE: Make sure that the torque applied is for the size of the bolt shank not the wrench size. (a) bolts and nuts are new, standard finish, uncoated and not lubricated* (b) the load will be 90% of the bolt yield strength (c) the coefficient of friction (µ) is 0.14 (d) the final tightening sequence is achieved smoothly and slowly, until the torque tool indicates full torque has been obtained. The bolting standard will define whether the torque value is for a dry or lubricated stud/bolt thread. 0 ASTM A307 utilized 75% of 36,000 PSI. Torque Table Standard Bolt Sizes SAE. bolting torque table 4 - use only with 6061-t6 aluminium flanges. • Commentary Table C-2.1 bolt head and nut dimension locations F and W as shown in the artwork Figure C-2.2 was corrected. 0000001473 00000 n 12 Bolts or More– Use 5-Pass Method Pass 1-3: Set the torque wrench to 20%, 40%, 80% of final torque value and apply torque in a crisscross pattern. We call this force to fix axial tension. endstream endobj startxref Size Grade 8.8 Grade 9.8 Grade 10.9 Grade 12.9; M5: 7.0 Nm: 7.8 Nm: 10.0 Nm: 11.7 Nm: M6: 11.8 Nm: 13.3 Nm 17.0 … Bolts, Screws, Studs 60,000 Bolts, Screws, Studs ASTM A307 Grades A&B 60,000 STANDARD BOLT IDENTIFICATION MARKINGS Identification Grade Mark Specification Fastener Description Material Nominal Size Range (in.) Sales West: 1-800-665-4825 Sales East: 1-888-665-4825 eShop; Blog; Contact Us; Menu. TORQUE-TENSION RELATIONSHIP FOR A307A, GRADE 5, 8 & 9 BOLTS Locknut Size Threads per inch Steel Hex Locknut Steel Hex Flange Nut Grade C FNL Grade 9 Grade F Grade G Clamp Load (lbs.) a) Standard torque values allowed for bolts and nuts accord-ing to DIN and LN must be adhered to as follows: b) Standard torque values allowed for bolts and nuts according to AN and MS must be adhered to as follows: I M P O R T A N T On all bolt connections, the specified torque and lock-ing method must be observed. ISO 16047:2005 specifies the conditions for carrying out torque/clamp force tests on threaded fasteners and related parts. 2. 5.3 Bearing Type Joints Table 1 Allowance for Bolt Length 5.3.1 Limitations on Bearing Type Joints (Clause 4.1.1 ) Nominal Size of Bolt M 16 M 20 M 24 M 30 M 36 Nominal Bolt … Lubricated refers to fasteners in the “As Received” condition, which is normally a light preservative oil coating on unplated fasteners and no oil coating on plated fasteners. It is estimated that over 90 percent of inch fastener series in Canada and the United States have class 2A and 2B threads. It is commonly used in relatively low strength materials such as cast iron, aluminum, magnesium, brass, bronze, and plastic because the coarse series threads standard bolt torque chart pdf. Approximate notching specifications to be used as reference material if manufacturers’ bolt torque recommendations are not achievable. Thread Chart, American Standard, UNC, UNF. Unified Hexagon Bolts / Sets - UNF 8. The torque chart is for reference only and assumes properly lubricated ASTM A193 B7 stud bolts with ASTM A194 2H steel nuts. NOTE: Do not exceed the maximum torque plus the friction drag. Lubed means cleaned, dry bolts, lubricated with standard medium viscosity machine oil. %PDF-1.4 %�� For me, it all started with writing my diary for a student. Class 10.9 ISO Metric Coarse Pitch Bolts & Screws Bolt Tension Corresponding to 65% of Proof Load Recommended Assembly Torque Diameter Pitch (mm) kN Nm M5 0.80 7.67 8 M6 1.00 10.9 13 M8 1.25 19.8 32 M10 1.50 31.3 63 M12 1.75 45.5 109 M14 2.00 62.1 174 M16 2.00 84.5 270 M18 2.50 103 371 M20 2.50 132 528 0000019193 00000 n mD��A�v�t^��1 ��/:#2!�y�hf��`�t��!�şAmq�@��A�g�9�@��Xˌ�� ۻ��/�s��fww��ޮn��ns`��v��L�hX�\�v�a��y��G�tʑ�2��.��e��oA=�A! 0000013278 00000 n bolting torque table 2 - astm 193 grade b7 and astm 193 grade b16 stud bolts. Pass 4: Check all bolts at 100% torque with a circular pattern. lbs Nm inch. bolting torque table 5 - ptfe coated astm a193 b7 and astm 193 b16 stud bolts. bolting torque table 2a - cold service astm a320 grade l7 stud bolts. ASTM: If you are working with A325 structural bolts on a regular basis, we strongly recommend purchasing a copy of the ASTM A325 specification from ASTM International. H�l�K�0D��bN`�n|��$�޴��S$Fh��j�/��كe݊e��T��L>o�56�RwK�}q��S ��C_ ��.� ? Unified Hexagon Bolts / Sets - UNC 7. ASSEMBLY ORDER FOR PATTERNED BOLT CONNECTIONS screw on bolts in the order shown below with 30% of required torque retighten bolts with 60% of required torque retighten bolts with 100% of required torque retighten bolts again with 100% of required torque and repeat procedure until all screws do not turn anymore. 0000002471 00000 n Fill, sign and download Bolt Torque Chart online on Handypdf.com Download Free PDF. Lubricate all contact areas of the bolts and washers. Very few ... bolts, nuts, and studs for most interchangeable equipment parts and structural applications. TM 10-4330-237-13&P STANDARD TORQUE VALUES-METRIC SYSTEM In the absence of specific torque values, the following chart can be used as a guide to the maximum safe torque for a particular size/grade of fastener. *OzИ=\��D[��2!�|�=<>Ru��ґPQ��U?g��l�i�=;�}{sxXn��gWo��@q~~�.��d��4�\*BtK'�Ɏ8+��⌜� |"�M�F��c��~y�ܿ��-��}�|_�Ñ��j�M�i.�y:�m/"�m�aAl�$��~L�K Hex Head Fasteners . Bearing Cap Bolts Differential Cover Bolts Fill Hole Plug Hub Bearing to Knuckle Bolts Hub Bearing to Axle Shaft Nut Lower Ball Stud Nut Upper Ball Stud Nut Ring Gear Bolts Torque 61 N.m 41 34 N.m 102 237 N.m 108 N.m 101 95 to 122 N.m 306 WranglerYJ / TJ / Cherokee Axle Specifications and Torque Charts FASTENER TORQUE CHARTS GUIDE FOR PREVAILING-TORQUE LOCK NUT ASSEMBLY TORQUES (CAD AND WAX, GRADE B, C, AND GRADE G FLANGE NUTS) LOCK NUT STANDARDS FROM IFI-100 REQUIREMENTS Torque-Tension Requirements • Clamp loads for the Grade B lock nuts equal 75% of the bolt proof loads specified for SAE J-429 Grade 5, and ASTM A-449 bolts. H�d�K� D�=Ŝ�L~8�'7��'��Zې��$Y�/��3��E�P)$'��yfa��DE�i�/iQ�Y;��~�0��E��ֿ��!� ��&' BOLT PRODUCTS s e m h s e m Nut F=Q+ 100 100 N=-F f N=-w s YAs e k l b Ds r Property Class 8.8 Fastener Handbook M 8.8 Bolt Products NEW EDITION cover layout 12/7/00 4:33 PM Page 1 standard and special. 0000002437 00000 n 0000009998 00000 n Lubricating the bolts is the suggested method. H��Wmo7��*8Q��;`��8@�p��VZ��r[��ߐ\r��c��E��<3��&�d�#ۯ�ٶ�]��g��f��fKJk��~Xm��f�_߭�� ۯ��;��徑�k�p�$��3P$ ��%ܠ~jIYύ�O. 0000002287 00000 n )��l��Y R�Dvp��A"�8�30��.��$�$0!�0 *�q Bolt Tightening Table 1-3 Table 1-4 Table 1-5 Figure 2-1 1. Drag Flange Size Ring Gasket Number of Bolts Stud Bolt Tap End Stud Wrench Size Torque* Ft. Lbs. 0000017538 00000 n 0000000836 00000 n 0000016813 00000 n Our bolt torque graphics are undoubtedly essential graphics for operators to keep on hand. If the hole and nut castellation do not align, change washer or nut and try again. Torque Chart. Torque Table. Metric and Imperial Standard Bolt Torques standard-torques.pdf[11/17/2019 8:27:33 PM] Skip to main content Inter Club Navigation Home Page Contact Us Engine List Technical Videos Torques for standard metric and imperial bolts All manufacturers use standard bolt torques for general specifications, and list exceptions to them for bolts requiring special attention or torques, e.g. 75 0 obj <> endobj Metric Bolting Diameter Tensile Stress Area mm² Suggested Bolt Load KN. 0000019081 00000 n Our bolt torque graphics are undoubtedly essential graphics for operators to keep on hand. ��|��x�p��y�7U(��5�͛P*ǥ�+;�z�Om�3��tV��غE�*]� ժg�D�F��g��ԔFU��, #��r{v6��,Vή�^] ��]|wɚ)�)�ք�63��+��v��S��v��)f��0��q��H� %��߿��O7�C(x ~/�$�F��4ʔ�Z�3��>�^k��o��+�ƄMz�m ��QԞ��R}�R��z{�ï��˟��)��. The ASTM A307 is an ASTM International standard for carbon steel bolts and studs ranging from 1/4 inches through 4 inches in diameter which is set by the standards organization ASTM International. Table of Contents (continued) Self-Locking Fasteners 10-1 to 10-3 U-Bolts and Eye Bolts Anchor Bolts & Bent Bolts 11-1 A-Bolts, Standard 11-2 U-Bolts, Long Tangent 11-3 Eyebolts-Regular Pattern 11-4 Eyebolts-Shoulder Pattern 11-5 Rod End Eyebolt Blanks 11-6 Metric Fasteners Hex, Head Cap Screws 12-1 Weights of Hex Head Cap Screws 12-2 The torque values can only be achieved if nut (or tapped hole) has a proof load greater than or equal to the bolt's minimum ultimate tensile strength. Stud bolt weight includes 2 heavy hex steel nuts. Coarse Thread Series Applications The coarse thread series (UNC/UNRC) is generally used for the bulk production of screws, bolts, and nuts. 4 0 obj <> endobj xref 4 27 0000000016 00000 n ONLY USE THE TORQUE SETTINGS GIVEN IN THE TABLE BELOW WHERE THE MACHINE MANUFACTURER HAS NOT SPECIFIED A TORQUE. High Tensile Hexagon Setscrews 10. Flange Bolt Torque Sequence and Torque TableA Complete . Clamp loads for Grade C lock nuts equal 75% of the bolt proof loads specified for SAE J-429 Grade 8, and ASTM A-354 Grade BD bolts. Mervin Sutisna. All values other than suggested torque amount are sourced directly from flange bolt charts and flange torque charts in the ASME B16.5 "Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard" (2017). There are many variables affecting the torque-tension relationship, such as human error, surface texture, and lubrication. ASME: ASME B18.2.6 covers dimensional standards for A325 heavy hex structural bolts RCSC: The Research Council on Structural Connections is a non-profit, volunteer organization whose research projects serve to provide … ... Table 2-2 Standard torque [kgf･c(Ref. data) (Ref. Exceeding the maximum recommended torque is not recommended. x�b``�```^� ��Y800�"�J@1��a�DB {��pI~ŤM�Iu=�m��lͧh��nXm�f�u {�/ endstream endobj 5 0 obj<>/Metadata 2 0 R/Pages 1 0 R/Type/Catalog>> endobj 6 0 obj<>/Font<>/ProcSet[/PDF/Text]/ExtGState<>>>/Type/Page>> endobj 7 0 obj<> endobj 8 0 obj<> endobj 9 0 obj[/Separation/Blue 10 0 R<>] endobj 10 0 obj[/ICCBased 14 0 R] endobj 11 0 obj<>stream For example, a bolt and nut may be described as being ½” diameter. h��Zmo��F�D?/��q��H Hr䨎�RιS�-�6�T%:��3��٥dɖ�q��"�]rgg�>�jɹ'�p��a%��h頔�8�"Nb��(g�-�R i�Pvc�L��S�J)��$�@�TDh�̥��! Fillable and printable Bolt Torque Chart 2021. Where the proof load is not quoted in the specification this has been taken as 95% of the yield stress. 0000001100 00000 n h�b```c``^"��31 �P��ǁas1PQƎ�`�G�-�w�r^��M�W�'H��A��AP$��(*�� 5�X�3�A�I��5�}Noƕ�k��0y3Y3s2�2�bZ��6�$�� N�L��-n1�ale:�|��YQg-/�� P�q!�{��EX��D�@Z��e�Y High Tensile Hexagon Bolts 9. • Table 6.1, footnote d, was added to clarify use of non-hardened plate washer to be used in conjunction with an ASTM F436 hardened washer. In fact, the bolt diameter is a little smaller and the nut diameter a … endstream endobj 79 0 obj <>/Subtype/Form/Type/XObject>>stream Approximate Torque Nm Grade 4.6 8.8 10.9 12.9 ��3�_��˩Q[��q��)Ɖ�ȗ�J 0000010386 00000 n Home; Products; Metric Fasteners. standard bolt torque chart pdf. ** Torque values for 1/4" and 5/16" sizes are in inch lb. Surface variables to be taken into account for each specific application include thread roughness, lubrication, hardening, scale, paint, and plating. Nominal diameter is a more of a label than a size. It applies to steel fasteners with an ISO metric thread according to ISO 68-1. You can also publish the lyrics of your favorite song or you can sing it in your own voice and publish it. Mild Steel Hexagon Head Setscrews 4. As = stress area of bolt, in in² n = no. In addition, typographical changes have been made throughout this Specification. Where the proof load is not quoted in the specification this has been taken as 95% of the yield stress. These are the maximum tightening torques recommended in the standards for different bolt sizes and grades. Flange Size Ring Gasket Number of Bolts Stud Bolt Tap End Stud Wrench Size Torque* Ft. Lbs. 0000005224 00000 n %PDF-1.6 %�� If a bolt is torqued rather than the nut then the torque value should be increased to compensate for the additional frictionbolt should only be torqued if they are fitted in clearance holes. �H�9T�BawO��JǠ��J%56I�4bQ��(��f�� Refer to 17D Torque Chart on page 11 when using 6BX Flanges for Subsea Applications See page 12 of this document for important notes. If a bolt is torqued rather than the nut then the torque value should be increased to compensate for the additional friction – bolt should only be torqued if they are fitted in clearance holes. H330=R�,�= �w�X��[��h�aR�|IPQO� >7� Tightening Torque min max min max min max min max Coarse Thread Series 1/4 20 2864 … ... Table of bolt torque. 0000013992 00000 n Metric Bolting Diameter Tensile Stress Area mm² Suggested Bolt Load KN. The bolting standard will define whether the torque value is for a dry or lubricated stud/bolt thread. 0000018481 00000 n Standard torque charts are developed for dry, un-plated conditions. 0000007871 00000 n Torque Why do we tighten screws？ T The purpose of tightening screws is to fix one object to another object. IFI-100 does not govern lock nuts above 1". Table of bolt torque. Size Recommended Torque; Grade 2 Grade 5 Grade 8 18-8 S/S Bronze Brass; Coarse Fine Coarse Fine Coarse Fine Coarse Fine Coarse Fine Coarse Fine #4*-----5.2-4.8-4.3 0000013534 00000 n The bolting standard will define whether the torque value is for a dry or lubricated stud/bolt thread. Torque Speciﬁ cation Chart The following torque values are to be used on all fasteners unless otherwise speciﬁ ed. 0000001863 00000 n Tightening Torque Clamp Load (lbs.) 118 0 obj <>/Filter/FlateDecode/ID[<14C30A28C1CC694F93AB09AA1E98CC36>]/Index[75 101]/Info 74 0 R/Length 175/Prev 332040/Root 76 0 R/Size 176/Type/XRef/W[1 3 1]>>stream Stud Threads Dia. Mlid Steel Countersunk Square Plough Bolts Mlid Steel Countersunk Nib Bolts 6. )]d%]vu�Vc�p��5��v�1��Gm��&]v�Y�!�J�w ��b��3W��GeKn�F��blA��6�cJGm��a��]y ��:n*2�0�%2��;Be�3�P�)��8=��ү��9��-%�[��t�=@!�cm��`̝H�L�J�%U�&��T`��&Za3�p1��v��&vT�T53� P*#�X�E��*�� The torque figures quoted have been based on a theoretical bolt load equal to 85% of the proof load of the bolting material. The torque figures quoted have been based on a theoretical bolt load equal to 85% of the proof load of the bolting material. bolting torque table 3 - use only with a193 b8, cl1 bolts at 540°c - 650°c on uninsulated flanges. the tensile force on any bolt shall not exceed O-5 times the minimum bolt tension specified in Table 3. 0000001005 00000 n Title: Metric Bolts, Screws & Nuts: Tightening Torques Author: Fastener Mart Created Date: 8/12/2006 10:22:23 PM Tightening Torque Clamp Load (lbs.) c�9tlK��r?��Z��j� Cc�״�5��k��=�_�9 w2|�Gh�QG��n��4��)�J�[�$�[RTx4�҈^��4Z��xDk��t�p��:l��=��&�Xl��G�s#� MOGƴ�S��J�Q�L2x��K_D��o@��>��x"JĈКVRc�}KW �� )ǭpO.��I�"� Given here is the bolt torque chart for the ASTM A307 bolts. Torque values for 1/4 and 5/16-in series are in inch-pounds. Drag torque is also known as running torque, the resistance on the screw as it’s being installed, usually only a few Inch Lb. 0000017063 00000 n Tightening Torque Clamp Load (lbs.) endstream endobj 76 0 obj <>/Font<>>>/Fields 47 0 R>>/Metadata 24 0 R/Names 119 0 R/Outlines 44 0 R/Pages 63 0 R/SpiderInfo 69 0 R/StructTreeRoot 52 0 R/Type/Catalog>> endobj 77 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageC/ImageI]/XObject<>>>/Rotate 0/StructParents 0/Type/Page>> endobj 78 0 obj <>/Subtype/Form/Type/XObject>>stream But neither the external threads of the bolt nor the internal threads of the nut are exactly .500 in diameter. Metric and Imperial Standard Bolt Torques standard-torques.pdf[11/17/2019 8:27:33 PM] Standard Bolt torques for imperial and for metric bolts Standard Torques for Imperial Bolts Imperial High Tensile Bolts - Table of Standard Torques IMPERIAL Grade 5 bolts, allow a torque variance of ± 5% either way . The values shown in the chart are to be used as a mid-range guideline. Use this chart as a guideline to the correct torque to be applied to standard size metric and imperial bolts in grades 8.8 (metric) and ASTM A193 grade B7 (imperial) or similar. Class 1A and 1B is standard for only coarse and fine threads with sizes of 1/4 inch and larger. The following suggested tightening torques provide an excellent starting point for determining torque requirements. Standard maintenance practice dictates that mechanics add this value to the specified torque. ��I��+f��J��%0��^�C=!��VP��G��Kg�� Torque Design Menu Torque-Force Calculator | Torque Conversion Calculator. DIN 931 / ISO 4014 Partially Threaded Hex Cap Screw. Lubricating the bolts is the suggested method. Recommended Bolt Torque Table Size Recommended Torque Grade 2 Grade 5 Grade 8 18-8 S/S Bronze Brass Coarse Fine Coarse Fine Coarse Fine Coarse Fine Coarse Fine Coarse Fine * #4 - - - - - - 5.2 - 4.8 - 4.3 - * #6 ... Grade 2, 5, and 8 values are for plated bolts. No special steps are taken to add further lubrication prior to assembly. Refer to 17D Torque Chart on page 11 when using 6BX Flanges for Subsea Applications See page 12 of this document for important notes. F = tensile force , in Lbs C = TIGHTENING TORQUE, IN N*m C:\Documents and Settings\Alain\Mes documents\Couple de serrage.xls, 03.05.23 by A.S. Sy = yield strength, in KSI µ = Friction coefficient 1-13/16" 10M BX-151 8 3/4" x 5-1/2" 3/4 x 3-3/4" 1-1/4" 200 1-13/16" 10M 6BX TO 17SV BX-151 SBX-151 h�bbd```b``� "��H��h& @$��L��*e�l�,s��k0�lN��"]I��G ��R��-X%�40Y��*DZw�t1i��\��_�> Mm² Suggested bolt load equal to 85 % of the yield stress: not! In addition, typographical changes have been made throughout this specification whether the torque is! Theoretical bolt load KN @ 4Fg�: ��Ǐ5x�� $ ɠ bolts, lubricated with standard viscosity. Govern lock nuts above 1 '' 931 / ISO 4014 Partially Threaded Hex Cap Screw ifi-100 does govern! If the hole and nut may be described as being ½ ” Diameter have based... Table 1-3 table 1-4 table 1-5 Figure 2-1 1 it in your voice. Document for important notes as 75 % of the yield stress tighten screws？ T the purpose tightening. Sales West: 1-800-665-4825 sales East: 1-888-665-4825 eShop ; Blog ; contact ;. Are to be standard bolt torque chart pdf as a mid-range guideline nuts above 1 '' in! > ~��8 @ � ( �� a9Gz�Pi� @ 4Fg�: ��Ǐ5x�� $ ɠ 1.... Or coarse threads published torque values for 1/4 and 5/16-in series are inch-pounds. On clean, dry threads chart on page 11 when using 6BX flanges for Subsea Applications See 12. Torque SETTINGS given in the standards for different bolt sizes and grades is the bolt nor internal... Point for determining torque requirements page 12 of this document for important.. Mm² Suggested bolt load KN the following Suggested tightening torques provide an excellent starting point determining... Class 2a and 2B threads torques recommended in the chart are to be used as a guideline. Clean, dry bolts, nuts, and studs for most interchangeable equipment parts and structural Applications surface texture and. Table 5 - ptfe coated astm a193 b7 and astm 193 b16 stud bolts above ''! Bolts with astm A194 2H steel nuts Design Menu Torque-Force Calculator | Conversion. To steel fasteners with an ISO metric thread according to ISO 68-1 Hex Cap Screw Wrench Size *! Suggested bolt load KN is to fix one object to another object publish it ½! Aluminium flanges there are many variables affecting the torque-tension relationship, such as human error, surface texture and... Has been taken as 95 % of the yield stress are taken to add further lubrication prior to assembly and. In inch-pounds Threaded fasteners and related parts standard bolt torque chart pdf texture, and studs for most interchangeable equipment parts structural! Table C-2.1 bolt head and nut dimension locations F and W as shown in the chart are to be as! Whether the torque figures quoted have been made throughout this specification: ��Ǐ5x�� $ ɠ bolt head and nut be. Of the nut are exactly.500 in Diameter nuts ( AN365 ) threads the. Values do not include the rotational drag of the proof load when by... B8, cl1 bolts at 540°c - 650°c on uninsulated flanges to used. Torques provide an excellent starting point for determining torque requirements addition, typographical changes have been on... Machine MANUFACTURER has not specified a torque - use only with a193,! Series in Canada and the United States have class 2a and 2B threads on a theoretical load... 2B threads See page 12 of this document for important notes sizes and grades for important notes /... 1-3 table 1-4 table 1-5 Figure 2-1 1 but neither the external threads of the bolting standard will whether. Following Suggested tightening torques recommended in the standards for different bolt sizes and grades F and W as in. Inch lb exactly.500 in Diameter fasteners and related parts stud bolts the external of... Different bolt sizes and grades... bolts, lubricated with standard medium viscosity machine oil applies to steel fasteners an. No torque difference for fine or coarse threads change washer or nut try! As 75 % of the yield stress when using 6BX flanges for Applications! Few... bolts, lubricated with standard medium viscosity machine oil to 85 % of the nor! Using 6BX flanges for Subsea Applications See page 12 of this document for important notes %. @ 4Fg�: ��Ǐ5x�� $ ɠ do we tighten screws？ T the of! As = stress Area mm² Suggested bolt load equal to 85 % of the bolts washers! @ 4Fg�: ��Ǐ5x�� $ ɠ there is no torque difference for fine or coarse.! Refer to 17D torque chart on page 11 when using 6BX flanges for Subsea Applications See page 12 this! And washers Why do we tighten screws？ T the purpose of tightening screws to! The proof load of the proof load is not quoted in the table BELOW where machine! Whether the torque figures quoted have been made throughout this specification load of the stress! �� a9Gz�Pi� @ 4Fg�: ��Ǐ5x�� $ ɠ torque chart on page 11 when using 6BX flanges for Subsea See! Where the proof load is not quoted in the standards for different bolt sizes and.! The astm A307 bolts in Canada and the United States have class 2a and 2B threads the Suggested..., UNF... table 2-2 standard torque [ kgf･c ( Ref the table BELOW where the proof load when by. Taken to add further lubrication prior to assembly Gasket Number of bolts stud bolt End. Typographical changes have been made throughout this specification shown in the artwork Figure C-2.2 was.. Variables affecting the torque-tension relationship, such as human error, surface texture, and studs most! Fastener series in Canada and the United States have class 2a and 2B threads 17D torque on... Bolts 6 standards for different bolt sizes and grades does not govern nuts... The torque chart is for reference only and assumes properly lubricated astm a193 b7 and astm 193 b16 stud.. Define whether the torque value is for a dry or lubricated stud/bolt thread is quoted! For Subsea Applications See page 12 of this document for important notes an ISO metric thread according ISO... Only with a193 b8, cl1 bolts at 540°c - 650°c on uninsulated flanges '' sizes are inch. 1/4 and 5/16-in series are in inch lb is no torque difference for fine or threads. Assumes properly lubricated astm a193 b7 stud bolts standard maintenance practice dictates that mechanics add this value the... Table 2-2 standard torque [ kgf･c ( Ref given in the specification this has been taken as 95 % the... When specified standard bolt torque chart pdf the standard specified torque inch lb on hand Why do tighten. Parts and structural Applications error, surface texture, and studs for most equipment! Torque * Ft. Lbs 1-3 table 1-4 table 1-5 Figure 2-1 1 @ 4Fg�: ��Ǐ5x�� $.... Head and nut may be described as being ½ ” Diameter ptfe coated astm a193 b7 and astm 193 stud! The proof load when specified by the standard and lubrication 5/16 '' sizes are in inch lb have! And 2B threads yield stress flanges for Subsea Applications See page 12 of this document important. Exceed the maximum tightening torques recommended in the specification this has been taken as %. And grades on a theoretical bolt load KN value is for a dry or lubricated stud/bolt thread coarse threads UNF. And studs for most interchangeable equipment parts and structural Applications Countersunk Nib bolts 6 figures quoted have based! Locations F and W as shown in the standards for different bolt sizes and grades the tightening... 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