Material fold under head of cold headed hex bolt caused by severe cold heading process

Fastener Testing
At ATRONA we conduct fastener testing on many types of fasteners including bolts, screws, washers, nuts and other cold formed components. Testing is conducted per ASTM, SAE, ASME, ISO and OEM standards as well as other proprietary standards. Call Bruce Meade, our fastener expert, for more information.
We also consult on many topics related to fasteners, their selection, grades, design, clamp loads, failure analysis, heat treatment, etc. Call ATRONA to inquire about our testing and consulting.