16815 Southpark Dr Westfield IN 46074 888 925 3284 317 896 4391 info industrialbolting comSizes from 1 4 up are in ft lbs Fine thread figures are for 1 14 Grade 2 5 and 8 values are for plated bolts Created Date 9 8 2006 11 12 23 AM Title Metric Bolts Screws amp Nuts Tightening Torques Author Fastener Mart Created Date 8 12 2006 10 22 23 PM2021 9 25 nbsp 0183 32 T bolt torque Put the values of different parameters into the formula to get the theoretical torque value of the bolt You can check our bolt maximum torque table to help you save time and reduce the trouble of calculation Calculation formula of high strength bolts Table V Bolt Torque No lubrication on threads Torque values are based on friction coefficients of 0 12 between threads and 0 14 between nut and washer or head and washer as manufactured no special cleaning Size Root area in 2 Torque range class 8 150

2019 3 19 nbsp 0183 32 Torque wrench is rarely used and torque values are rarely showed in drawings Remember API 661 6 1 1 s maximum and minimum plug torque values with recommended thread lubrication 9 4 3 Plug gasket contact surfaces shall be machined to a finish ofTorque Chart for ASTM A193 Grade B7 Studs in Ft Lbs at 100 of yield Bolt Diameter Nut Size Moly Lube Nickel Lube Copper Lube Machine Oil Dry u 0 085 u 0 110 u 0 100 u 0 160 u 0 400 3 4 quot 1 1 4 quot 208 342 314 448 1118 7 8 quot 1 7 16 quot 330 544 500 716860 666 990 740 1060 845 Proper torque spec varies depending on the material bolt grade or if lubrication is used such as oil wax or anti seize Always go to the manufacturer for proper torque specifications The chart above is an approximate estimate of torque values and have not been validated for accuracy Pass 4 Set the torque wrench to 100 torque value and repeat crisscross pattern for a 4th time Pass 5 Check all bolts at 100 torque with a circular pattern Bolt Tightening Sequence Crisscross pattern divide the flange into 4 quadrants Over 40 bolts 1 2Recommended 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 8 19 7 16 5 16 7344 11 2 1650 8 26 13954 21 3 3136 15 71 15061 23 0 3385 16 96

Up to 8 Bolts– Use 4 Pass Method Pass 1 Set the torque wrench to the 30 torque value and apply the torque wrench in the crisscross pattern for that particular flange until all bolts have been tightened once Pass 2 Set the torque wrench to the 60 torque These guidelines are intended for bolting of PVC flange adapters Tighten bolts by hand until they are snug Establish a uniform pressure over the flange face by tightening the bolds in 5ft lbs increments to the torque valves listed in the table below using a 180 degree opposing Care must be taken to avoid bending the flange when joining 2010 8 20 nbsp 0183 32 General information for Tensioning 2 1 This procedure is for the use of a All flanged joints with a stud diameter of 2 and above b All flanged joints wit a bolt diameter of 1 1 2 and above in a critical service as defined by the owner or purchaser c Shell and Heat exchanger flange assemblies with a bolt diameter of 1 Yoke Nuts Ascertain manufacturer s torque guide then reduce values by 30 Maximum Torque Guide Aluminium in Nm Thread Diameter 3mm 4mm 5mm 6mm 8mm 10mm Flanged Hex Head Bolt n a n a 6 00 8 00 12 00 20 00 Socket Cap Bolt 1 50 3 50 70 95 53 72 110 149 80 108 5 18 78 105 5 59 80 120 162 5 90 122 5 8 11 100 135 5 73 99 150 203 5 110 149 18 110 149 83 112 170 230 5 130 176 3 4 10 170 230 5 130 176 270 366 200 271 16 190 257 5 140 190 300 406 5 220

Torque tolerance 0 15 of torquing values Unless otherwise specified use torque values listed above 5 8 8 8 10 9 Class 5 8 Class 8 8 Class Bolt Head Identification Bolt Size Grade 2 Grade 5 Grade 8 Metric Bolt Head Identification Bolt Size Inches d Nominal bolt diameter in The nut factor is not the coefficient of friction It is an experimentally derived constant that includes the impact of friction ft lbs to nm 0 737562149277 nm to ft lbs 1 3558179 Table 4 Torque FT LBS Use only with 6061 T6 Aluminium flanges BOLT With T T Y head bolts the Torque To Angle Indicator Part Number TRQ 1 should be used in conjunction with a torque wrench to achieve proper bolt loading While the head bolts are being torqued to the specified value the technician can use the TRQ 1 tool toTable of Contents Page 3 Name Plate Insert 4 1 0 Principles of the Plate Heat Exchanger 1 1 Principles 2 0 Construction of the PHE 5 2 1 Plate Characteristics 6 0 2 2 The tightening torques below are for imperial US bolts with tension approximately 70 of yield strength Size in Torque lbf ft SAE Grade 2 SAE Grade 5 SAE Grade 8 18 8 S S Coarse

AC 43 13 1B 9 8 98 Page 7 12 Par 7 65 TABLE 7 2 Minimum prevailing torque values for re used self locking nuts FINE THREAD SERIES THREAD SIZE MINIMUM PREVAILING TORQUE 7 16 20 8 inch pounds 1 2 20 10 inch pounds 9 16 18 13 inch pounds 5number and size of bolts for the unit type is used to bolt the unit into place Bolt unit into place using the maximum torque values in Table 4 10 For units supplied with mounting studs use Table 5 for maximum torque values Damage may occur if studs areTIGHTENING 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 9Typical fouling factor values Following table represents typical values of heat exchanger dirt factor for commonly occurring process fluids in petroleum industry Fluid Fouling Factor h⋅ft 2 ⋅ F Btu Water 0 0002 Propane 0 001 Butane 0 001 Gasoline 0 001The values are for slightly lubricated bolts For dry bolts increase the torques with approximately 30 Bolt Torque Calculator Metric Bolts Tightening Torques Sponsored Links Related Topics Fasteners Bolts nuts and threaded rods torque tension and

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