Torque and Preload Table for DIN metric screws

Technical table Torque preload DIN screws manufactured project

Torque and Preload Table for Metric Bolts

DIN912 DIN931 DIN934 DIN6912 DIN7984 DIN7990

Click on the gauge where available to download the CAD block for screw and nut

N = preload / Nm = tightening torque

image

All torques (Nm) and preloads or tensile forces (N) correspond to the standard values ​​for metric threads according to DIN 13. Screw head dimensions comply with DIN 912,931,934,6912,7984 e 7990. Using an elastic limit of 90% ( coefficient of friction 0,14 – new, non-lubricated screw). It is recommended to reduce the torques by 20% when applying MOS2 lubrication (or similar), especially for cadmium-coated surfaces.

N = preload
Nm = tightening torque
Screw Size
(thick metric)
key opening
(mm)
Class 3.6(4D)
Pre_Load (N)
Class 3.6(4D)
Torque (Nm)
Class 5.6(5D)
Pre_Load (N)
Class 5.6(5D)
Torque (Nm)
Class 6.9(6G)
Pre_Load (N)
Class 6.9(6G)
Torque (Nm)
Class 8.8(8G)
Pre_Load (N)
Class 8.8(8G)
Torque (Nm)
Class 10.9(10K)
Pre_Load (N)
Class 10.9(10K)
Torque (Nm)
Class 12.9(12K)
Pre_Load (N)
Class 12.9(12K)
Torque (Nm)
M242840.123780.167310.318630.3712160.5214610.63
M2.34.54070.25440.2610490.5112450.617550.8420991.01
M2.655250.287010.3713530.7315980.8622461.2126971.45
M35.57260.449660.5918631.1322071.3431091.8837272.26
M3,569716.812940.925011.7429622.0641682.8950013.48
M471255116771.3432262.638253.0453744.3164535.15
M58 920591.9627362.6552865.1062576.0388068.481059110.2
M61029033.4338644.5174538.73883610.31240514.711490617.65
M710 1242375.5956497.451088514.221294517.161819124.522177128.44
M813 1453158.24709010.791368021.571623025.52275235h302736142.17
M1015 16 17847316.671127821.572177142.172579250.013628570.614354285.32
M1218 19 201235628.441647538.253177373.553765887.2852956122.5863547147.10
M1421 22 231696645.112265460.843640116.751681138.2772668194.1787280235.36
M1624 25 262334069.633108793.1660017178.4871197210.84100028299.1120132357.94
M1827 282834195.1337854127.4972962245.1786495289.3121603411.88146120490.34
M203036481135.3348641180.4493850348.14111306411.88156417578.5187798696.28
M2232 3445601182.460802245.17117190470.72139255558.98195644784.54234380941.44
M243652564230.4670020308.91135333598.21160340710.992255541000.282706651196.42
M274169235343.2392281460.92177992887.512108441049.322961631480.813559841775.01
M304684044465.82112287622.732157481206.232559551421.973599062010.384324762402.64
M3350104932632.53139746848.282696851627.913196991931.924491472716.465393693265.63
M3655123074813.961642631088.543167572098.643746162481.105276013491.196325334197.27
M39601480811059.121971151412.173805002716.464511093226.416335134530.77610015442.72
M42651691661304.292255541745.594354183363.75158333991.337256975609.448708366727.4
M45701980961637.722647812177.095099494207.086040934991.628502427011.8010198998414.16
M48752226121980.9629714326385736936060.556796056021.329561548473.0114738510149.94
M52802677232539.943569643393.126884316541.088159187747.30114738510885.45137784313091.96
M56853089113167.574118824226.697933638149.389404639649.8132390613582.29158868716279.14
M60903608873932.494815095246.5992771510100.91109835111964.19154455716867.54185346820201.82
M64954079594736.645442726305.71104931812160.32124545214415.86175049820299.89209863624320.64
M6810046601757886221107727119897614891142067217645199753924809239569129754
M7210552688169137033609228135556817785160622021074225842729631270857835537
M76110599212827579991911047154166321290182672525227
M80115671179962589599112849172681924763204611829341
M9013086863014098153670024941223482436271264805542978
M100145109141519613165698526182280800850460332722559790
M110155133962526391178833535230344660967898408390680453
M120175161326934588215363646174415064488990
M13018519119574430002553238591594920786114015
M1402002237179557063115172775685755849143321
M1502102586543689063452910919866654699177281

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