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 TI GHTENI NG TORQUE FOR SCREW CONNECTI ONS HOT GALVANI ZED SCR EW CONNECTIONS, Strength Class 8.8 Lu b r i can t T i g h t en i ng T o rqu e [ Nm ] Condition M 4 M5 M6 M 8 M10 M12 M16 M20 M24 M30 M 3 6 D r y 3 , 4 6 , 7 1 1 , 5 2 8 5 5 9 5 2 3 0 4 5 0 7 7 8 1 5 3 3 2 6 6 8 Oil/E mulsio n 3,1 6,1 10,5 26 50 87 211 412 712 1402 2440 W a x 1,8 3,6 6,2 15 30 51 124 243 419 825 1436 HOT GALVANI ZED SCR EW CONNECTIONS, Strength Class 10.9 L u b r i can t T i g h t en i n g T o r q u e [ N m ] Condition M 4 M 5 M 6 M 8 M 1 0 M 1 2 M 1 6 M 2 0 M 2 4 M 3 0 M 3 6 Dry 4 , 7 9 ,5 16,4 39 7 6 133 324 633 109 4 215 3 37 5 6 Oil/E mulsio n 4,3 8,7 15,0 35 70 122 296 579 1000 1969 3435 W a x 2,5 5,1 8,8 21 41 72 175 341 589 1159 2022 HOT GALVANI ZED SCR EW CONNECTIONS, Strength Class 12.9 Lu b r i can t T i g h t en i ng T o rqu e [ Nm ] Condition M 4 M5 M6 M 8 M10 M12 M16 M20 M24 M30 M 3 6 Dr y 5 , 7 11,3 19,9 47 92 159 3 90 759 131 0 25 8 6 4 5 0 5 Oil/E mulsio n 5,2 10,4 18,2 43 85 146 356 694 1198 2365 4120 W a x 3,1 6,1 10,7 25 50 86 210 409 706 1392 2426 STAINLESS SCR EW CONNECTIONS, Strength Class A4-80 (A2-80) Lubrican t T i g h t ening T o rqu e [Nm] Condition M 4 M 5 M 6 M 8 M 1 0 M 1 2 M 1 6 M 2 0 M 2 4 M 3 0 M 3 6 O i l /E m u l s i o n 2 , 3 4 , 5 7 , 8 1 8 3 7 6 4 1 5 7 3 0 6 5 2 8 1 0 4 2 1 8 1 4 W a x 2,7 5,4 9,3 22 44 76 187 364 629 1240 2160 NOTE! By the use of Hexagon Flanged Screws the values above must be increased by 10%(Multiple the value with 1,1). PTK/ M H D 2004- 11- 03 Si d a 1 a v 1

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Page 1: Screw Torque

5/17/2018 Screw Torque - slidepdf.com

http://slidepdf.com/reader/full/screw-torque 1/1

TIGHTENING TORQUE FOR SCREW CONNECTIONS

HOT GALVANIZED SCREW CONNECTIONS, Strength Class 8.8Lubricant Tightening Torque [Nm]

Condition M4 M5 M6 M8 M10 M12 M16 M20 M24 M30 M36Dry 3,4 6,7 11,5 28 55 95 230 450 778 1533 2668

Oil/Emulsion 3,1 6,1 10,5 26 50 87 211 412 712 1402 2440

Wax 1,8 3,6 6,2 15 30 51 124 243 419 825 1436

HOT GALVANIZED SCREW CONNECTIONS, Strengt h Class 10.9Lubricant Tightening Torque [Nm]

Condition M4 M5 M6 M8 M10 M12 M16 M20 M24 M30 M36Dry 4,7 9,5 16,4 39 76 133 324 633 1094 2153 3756

Oil/Emulsion 4,3 8,7 15,0 35 70 122 296 579 1000 1969 3435

Wax 2,5 5,1 8,8 21 41 72 175 341 589 1159 2022

HOT GALVANIZED SCREW CONNECTIONS, Strengt h Class 12.9Lubricant Tightening Torque [Nm]

Condition M4 M5 M6 M8 M10 M12 M16 M20 M24 M30 M36Dry 5,7 11,3 19,9 47 92 159 390 759 1310 2586 4505

Oil/Emulsion 5,2 10,4 18,2 43 85 146 356 694 1198 2365 4120

Wax 3,1 6,1 10,7 25 50 86 210 409 706 1392 2426

STAINLESS SCREW CONNECTIONS, Strengt h Class A4-80 (A2-80)Lubricant Tightening Torque [Nm]

Condition M4 M5 M6 M8 M10 M12 M16 M20 M24 M30 M36Oil/Emulsion 2,3 4,5 7,8 18 37 64 157 306 528 1042 1814

Wax 2,7 5,4 9,3 22 44 76 187 364 629 1240 2160

NOTE!

By the use of Hexagon Flanged Screws the values above must be increased by 10% (Mult iple t he value wit h 1,1).

PTK/ MHD 2004-11-03 Sida 1 av 1


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