Jun 23, 2003 #1 limct Mechanical Joined Jan 27, 2003 Messages 134 Location HK I'm having difficulty to find out if there's any standard checking method to measure the hardness of screws , Let it be surface, case depth and core hardness.Can anyone help? Thanks a lot.
I'm having difficulty to find out if there's any standard checking method to measure the hardness of screws , Let it be surface, case depth and core hardness.Can anyone help? Thanks a lot.