TORQUE TENSION RELATIONSHIP FOR A307A GRADE 5 8 amp 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 Tightening Torque Clamp Load lbs Tightening Torque Clamp Load lbs Tightening Torque Clamp Load lbs Tightening Torque min max min max min max min max Coarse tightening torque for class 8 8 bolts metric coarse bolt diameter x pitch thread stress area mm2 tightening torque nm pre load kn tightening torque nm pre load kn m5 x 0 8 14 2 7 4 5 2 7 6 5 m6 x 1 20 1 10 4 9 9 9 11 3 m8 x 1 25 36 6 19 1 21 6 18 1 27 3 m10 x 1 5 58 30 3 43 28 8 54 m12 x 1 75 84 3 44 1 73 41 9 93 m14 x 2 115 60 6 117 57 5 148 m16 x 2 157 82 9 180 78 8 230 m18 M P x D M torque N m 5000 P bolt tension Newtons D bolt dia mm These formulae may be used for bolts outside the range of the tables overleaf Recommended Maximum Bolt Loads and Torque Values UNC Threads UNC Quality P S T A F in Newtons N m lbf lbf ft Newtons N m lbf lbf ft Newtons N m lbf lbf ft in 1 4 4379 5 43 984 4 00 8320 10 3 1870 7 60 8980 11 1 2018 K Factor is a torque coefficient between bolt and receptacle It is a function of the materials frictional characteristics which are based on surface finish coatings and so on Various K Factors Typical Steel Bolt 0 20 Zinc Plated 0 20 Lubricated 0 18 Cadmium Plated 0 16 Want to learn more about Strain Gauge Load Cell Visit the quot How a Load Cell Works quot page recommended torque values lubricated stud bolts w 0 15 friction value nominal quantity bolt nominal quantity bolt nominal quantity bolt pipe size of bolts diameter min max pipe size of bolts diameter min max pipe size of bolts diameter min max 1 2 4 3 4 95 120 1 2 4 3 4 95 120 1 2 4 3 4 95 120 3 4 4 3 4 95 140 3 4 4 3 4 95 120 3 4 4 3 4 95 120 1 4 5 8 110 120 1 4 7 8 110 120 1 4

Values in this chart are advisory only all applications vary F1554 does not specify tightening torques Generally the full effort of an ironworker with a ordinary spud wrench is sufficient to tighten the nuts on anchor bolts Consult the design engineer to determine the proper tightening torque or if pretensioning is required for your Copper Threaded Rod Torque Chart Dimension of Copper Hex Bolts Copper Fasteners Size Chart Specification of Copper Fasteners Copper Fasteners Specifications CDA Copper Copper Fasteners Standard CDA 102 CDA 101 CDA 110 Copper Fasteners Size 4x M10 1 50 Copper Fasteners Type Hex Coupling Nut Hex Nut Square Nut Hex Domed Cap Nuts Hex Head Bolts Torque For Flange Bolting B7 L7 Studs Stud Diameter Tension Size Ibf Torque Torque Torque Torque Inch Nm Ft lbs Nm Ft lbs f 0 07 f 0 07 f 0 13 f 0 13 1 2 quot 7450 48 35 80 59 5 8 quot 11865 92 68 155 115 3 4 quot 17559 160 118 270 200 7 8 quot 24241 253 188 429 319 1 quot 31802 376 279 639 474 1 1 8 quot 41499 540 401 925 686 1 1 4 quot 52484 745 553 1285 953 1 3 8 quot 64759 996 739 1727 20 hours ago nbsp 0183 32 Bolt torque chart reference guides include Grade 2 B7 A307 A325 Grade 8 A490 and Grade 5 Table is for standard pipe flanges only com roelvandepaarWith thanks amp praise Combined method uses a torque wrench in the first step of assembly 3 In this guideline the torque required it is defined by the following expression Where Number the bolts flange Surface Condition Torque Adjustment Factors Plain Steel as supplied X 1 0 Plain Steel degreased X 2 0 Zinc Plated as supplied X 1 0 Zinc Plated lightly oiled X 0 9 Galvanised degreased X 2 1 Galvanised lightly oiled X 1 1 Heavily greased X 0 7 RECOMMENDED ASSEMBLY TORQUES Class 4 6 ISO Metric Coarse Pitch Bolts amp Screws Bolt Tension Recommended Corresponding to

Torque Values are in ft lbs and assume new A193 Gr B7 studs with 2H heavy hex nuts with studs nuts and the nut bearing surfaces lubricated with a never seize type paste k 0 17 using the installation and bolt tightening practices outlined on this website or the Durlon Technical Handbook Lubricant should not be applied to the gasket or flange faces as a release agent Bolt torque chart reference guides include Grade 2 B7 A307 A325 Grade 8 A490 and Grade 5 AFT Fasteners is your trusted source for fastener information 265 240 235 212 Sizes from 4 to 10 are in lb in Sizes from 1 4 quot up are in lb ft † Fine thread figures are for 1 quot 14 Grade 2 5 and 8 values are for slightly lubricated bolts Shop Torque has been converted into ft lbs by dividing the result of the formula by 12 All calculations are for Coarse Thread Series UNC Grade 2 calculations only cover fasteners 1⁄4 quot 3⁄4 quot in diameter up to 6 quot long for longer fasteners the torque is reduced significantly Clamp loads are based on 75 of the minimum proof loads for each For copper to copper connections Bolt and nut of high strength corrosion resistant bronze alloy Pressure bar is copper through 40H copper alloy is used for 350 kcmil and above Bolt and nut of hex design up to 350 kcmil CSA certified and UL listed Split bolt connectors Type H – High strength split bolt connectors no Conductor range AWG or kcmil Dimensions in

Applying too much torque to a bolt will cause the bolt to stretch irreversibly and reduce the area of the bolt Continuing to tighten the bolt will cause it to stretch further and eventually the bolt will fail Bolts that show signs of deformation should be discarded Some vacuum workers do not attempt to reuse 1 33 quot conflat flange screws because a significant number are distorted after NEMA RECOMMENDED BOLT TORQUE VALUES FOR BOLTED POWER CONNECTORS NOMINAL CLASS B STRANDED WIRE DIAMETERS SILICON BRONZE STEEL ALUMINUM 5 16 18 180 180 3 8 16 240 240 168 7 16 14 360 360 230 1 2 13 480 480 300 5 8 11 660 660 480 3 4 10 840 840 NOMINAL TORQUE VALUES IN LBS 800 1000 1250 1500 2000 18 16 14 12 10 lbs plain torque dry K 2 4 40 0 1120 0 00604 250 5 LBS 380 8 LBS 540 12 LBSBolt Torque Calculation The relationship between bolt torque and its corresponding pre load force tension is given in the following formula T K F i d where T Torque required to create a desired bolt pre load in lb K Nut quot K Factor quot dimensionless F i Bolt Pre Load Force lb f d Bolt Nominal Diameter in Bolt Nut Recommened Torque Table for SAE Grades Design Resources Torque Design Menu Torque Force Calculator Torque Conversion Calculator Torque Table The following suggested tightening torques provide an excellent starting point for determining torque requirements Remember you may need to vary these numbers somewhat based on the individual joint or the

Bolted Copper Lug Torque Chart September 21st 2013 00 23 14 AM ELECTRICAL CONNECTIONS FOR POWER CIRCUITS Torque moments All bolts in bolted connectors should be tightened with a torque c percent of the area of a copper bus With a torque wrench tighten the Filename vol3 3 pdf Read File Online Report Abuse TECHNOLOGY u0026amp 7 rows nbsp 0183 32 Bolt Size Recommended Torque Inch Pounds 1 4 – 20 80 5 16 – 18 180 3 8 – 16 240 1 2 – 13 480 NOTE 1 This torque table applies for 1 16 quot and 1 8 quot thick homogeneous elastomeric gaskets The pressure rating of the material may vary depending on the grade NOTE 2 The above mentioned torque values are based on a maximum bolt stress of 60 000 psi Bolt yield should be at least 80 000 psi 23 Section 6 Appendix 12 21 01 RCR15 Series Rotary Cutters 312 556M Land Pride Section 6 Appendix Torque Values Chart for Common Bolt Sizes in tpi1 N 183 m2 ft lb3 N 183 m ft lb N 183 m ft lb mm x pitch4 N 183 m ft lb N 183 m ft lb N 183 m ft lb 1 4 quot 20 7 4 5 6 11 8 16 12 8 436597 2021 01 30 nbsp 0183 32 Bolt Lubricant Torque Chart What is Bolt Lubricant Any lubricant is designed to reduce friction and wear between two surfaces in contact Bolt lubricant is a little more complicated than that In the past bolt lubricant has been associated with disassembly and therefore many in the oil and gas will refer to it as anti seize But bolt lubrication is also

Tags: