Q: I have a question on 17-4PH H1150, do you know what the tolerance on the material strength is? Ie +/- 10% ?

A: For a 17-4 H1150 bolt, we would use the ASTM A564, Type 630 spec to define the strength as 115 KSI Min Tensile, 105 KSI Min Yield and 24 HRC min hardness.