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Old 31-03-2015, 02:23 PM   #49
matty_d
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Thanks. For strength, a rolled thread would be preferred. I need to work out lengths but these are better value than the Skip Brown ones.

FYI, a 12.9 grade fastener has a tensile strength of ~1220MPa and 41Cr4 (up to 16mm dia) has a tensile strength of 1000-1200MPa. So these are up there on strength terms!
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