Hello - recently ran into a situation on a sport route where the top twin anchors were missing - only thing left were the two actual bolts sticking out of the rock, minus the hangers, washers and nuts.
From this experience, I'd like to have a "kit" handy of two hangers and requisite hardware to replace missing items in future - sort of a combined safety/maintenance concept.
To that end, I have hangers but have no idea what the possible hardware needs would be; I assume two washers of some sort (?) and two nuts. Re the nuts, what is the usual/typical specs for anchor bolts? (i.e. thread pitch, metric or english, etc).
Thanks in advance to anyone who knows this stuff intimately
Steve in PDX