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Tensile and Proof Stress Of Metric Bolts and Screws.

Indicated stresses in Newton/mm2

Strength Designation 4.6 4.8 5.6 5.8 6.6 6.8 8.8 10.9 12.9 14.9
Ult. Tensile Strength 392.4 392.4 490.5 490.5 588.6 588.6 784.8 981.0 1177.2 1373.4
Yield Stress 235.4 314.0 294.3 392.4 353.2 470.9 - - - -
Stress at Perm. Set - - - - - - 627.8 882.9 1059.5 1236.0

In accordance with BS3692 and ISO /DR911

Tensile Strength Of Metric Nuts

Indicated stresses in Newton/mm2

Strength Designation 4 5 6 8 12 14
Tensile Strength 392.4 490.5 588.6 784.8 1177.2 1373.4

In accordance with BS3692 and ISO /DR911

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Last Updated 29/10/2000