I know this is an old post but does anyone know the pitch and how many of the bolts you need? I'm in need to snubber hardware too and want to get it right the first time.
16 threads per inch (3/8" coarse threads in other words). Some cases are drilled for 2 bolts and others 3 bolts so get 3 to make sure you have enough. Get lock washers too. Also since there can be quite a bit of force on it I'd get grade 5 or 8 bolts.
