Standard Torque Specifications

Nominal Bolt Diameter (mm)	Thread Pitch (mm)	Torque (N·m)
		Numeric Mark (4) on Bolt Head	Numeric Mark (7) on Bolt Head
M5 M6 M8 M10 M12 M14 M16 M18 M20 M22 M24	0,8 1,0 1,25 1,25 1,25 1,5 1,5 1,5 1,5 1,5 1,5	3 - 4 5 – 6 12 – 15 25 – 30 35 – 45 75 – 85 110 – 130 160 – 180 220 – 250 290 – 330 360 - 420	5 - 6 9 – 11 20 – 25 30 – 50 60 – 80 120 – 140 180 – 210 260 – 300 360 – 420 480 – 550 610 - 700

1. The torque values in the table are nominal values under the following conditions:

• Bolts and nuts are made of galvanized steel rod.

• Flat washers made of galvanized steel are installed.

• Threads and seating surfaces of bolts, nuts and flat washers are dry.

2. The torque values in the table do not apply:

• If spring (lock) washers, serrated washers or similar washers are installed.

• If plastic parts are being fastened.

• If self-tapping screws or self-locking nuts are used.

• If threads and seating surfaces are lubricated with oil.

3. In practice, to obtain the nominal value in the following cases, the torque values in the table may be reduced to the percentages indicated.

• If spring (lock) washers are installed: 85% of nominal • If threads and seating surfaces are lubricated with oil: 85% of nominal