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# Threaded Rods - Proof Loads - Metric Units

Metric threaded steel rods - typical minimum proof load:

Threaded Rods - Proof Loads - Metric Units
Nominal Size Pitch
(mm)

Stress Area
(mm²)
Minimum Proof Load (kN)

1)
Property Class
4.68.810.9
M3 0.5 5.0 1.1 2.9 4.2
M4 0.7 8.8 2.0 5.1 7.3
M5 0.8 14.2 3.2 8.2 11.8
M6 1 20.1 4.5 11.7 16.7
M8 1.25 36.6 8.2 21.2 30.4
M10 1.5 58.0 13.1 33.6 48.1
M12 1.75 84.3 19.0 48.9 70.0
M14 2 115 25.9 66.7 95.5
M16 2 157 35.3 91.1 130
M18 2.5 192 43.2 115 159
M20 2.5 245 55.1 147 203
M22 2.5 303 68.2 182 251
M24 3 353 79.4 212 293
M27 3 459 103 275 381
M30 3.5 561 126 337 466
M33 3.5 694 156 416 576
M36 4 817 184 490 678
M39 4 976 220 586 810
M42 4.5 1121 252 673 930
M48 5 1473 331 884 1223
M52 5 1758 396 1055 1459
M64 6 2676 602 1606 2221

1) Mass and Weight - the difference

• 1 in2 = 0.00155 in2

Threaded steel rods are typically used as hangers in piping, HVAC and electrical systems.

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