What's the maximum proof strength (in ksi) of a J429 GR 8 bolt and that of an ASTM A490 bolt?
What's the proof strength of a metric Class 10.9 bolt in MPa?
What is the ultimate strength and the yield strength (in MPa) of metric Class 4.6 bolt?
Does an increase in hardness increase or decrease the tensile strength of a steel bolting material?