M25 Bolt Torque

Do not use these values for standard metric internal thread designs.

M25 bolt torque. Iso 724 metric threads dimensions of metric threads according iso 724. Multiply nm by 0 737562 0 73 0 44 1 29 1 00 2 08 2 1 2 94 3 5 5 34 8 5 8 45 17 12 4 30 16 8 47 22 9 73 28 1 101 35 8 143 44 3 195 51 6 248. Minimum torque if scatter is 23 1 602 x 0 77 1 234 nm torque should be set to 1 602 nm mean torque on the torque wrench the accuracy of the tightening method as well as the change in friction needs to be accounted for in order not to over tighten the fastener. These thread sizes and classes represent bolts and screws as well as other standard external threads.

Grade 2 grade 5 grade 8 18 8 s s bronze brass. Improvised torque wrench improvised torque wrench with luggage scale. Multiply kn by 224 809 to convert nm to lbft. Our metric stud bolt to nut table is meant to help determine the correct size bolt or nut for your purpose.

These estimated torque values are derived from the standard torque formula torque kdf utilizing a standard free spinning nut non locknut with a proof strength equal to or greater than the tensile strength of the bolt. Fasteners bolts nuts and threaded rods torque tension and loads. All units in mm. Values calculated using industry accepted formula t kdp where t torque k torque coefficient dimensionless d nominal diameter inches p bolt clamp load lb.

The bolt chart provides both us and metric stud sizes. Wrench maximum torque maximum torque maximum torque maximum torque maximum torque size lb ft nm lb ft nm lb ft nm lb ft nm lb ft nm m3 5 5mm 3 5 5 7 1 1 3 1 5 2 1 5 2 m4 7mm 8 1 1 1 1 5 2 3 3 4 5 4 5 m5 8mm 1 5 2 5 2 3 4 5 6 6 5 9 7 5 10 m6 10mm 3 4 4 5 5 7 5 10 11 15 13. Bolt torque calculator calculate required bolt torque. Metric bolts screws nuts.

Class 4 6 iso metric coarse pitch bolts screws bolt tension recommended corresponding to assembly 65 of proof load torque kn nm 0 19 0 06 0 31 0 12 0 50 0 25 to convert kn to lbf. Lubricated bolts and reduced torque lubrication effect on bolt tension and torque. Relative strength marking 4 6 4 8 8 8 or 9 8 10 9 12 9 bolt markings dia. Coarse fine coarse fine coarse fine coarse fine coarse fine coarse fine 4 5 2 4 8 4 3.

Definitions of terms are located below the chart. The following are metric external thread size table chart for sizes m20 to m55 per. Pressure wax as supplied on high strength nuts 10 hot dip galvanized 25 and plain non plated bolts as received 20. Engineering slide chart ansi screw hardware.