OAV/Agrati Hex Bolt -10x40mm (Bag of 4pc) - these started out as black grade 10.9 bolts from select manufacturers (in this case, Agrati of Italy). The bolts were tumble cleaned and acid etched ("pickled"). The hardware was then plated to gauge (3.5-4/10,000" thickness vs commercial standard of 2/10,000") and chromated to spec (yellow cadmium finish). Zinc would have been more cost effective but would not have looked as nice or had the superior corrosion resistance. The final step was very critical (and often skipped by many of the low-end manufacturers)...the hardware must be baked to release the hydrogen from the plating process ("hydrogen embrittlement") or you'll severely compromise the tensile strength of the fastener (8hr baking was specified vs the commercial standard of 1-2hrs). All of the treated hardware was delivered with a Letter of Certification from the plating company assuring me (and my customers) that the hardware met the stated specifications.
Deep discount on the limited supply available. The regular gr8.8 retail for approx $10.00each. These are far superior.
Popular suspension size for BMW and other auto applications (eg, the control arm support "lollipop brackets" for E30/E36 front control arms). Also consider these gr10.9 bolts as a substitute for the very expensive 11621427586.
