Isolation mounts are used to attach and position systems, accommodate displacement, and isolate components from the surrounding structure (vibration, shock, noise). Mount Type: Two-Piece - Symmetric Head Outside Diameter (mm): 76.2 Head Outside Diameter (in): 3 Head Thickness (mm): 12.7 Head Thickness (in): 0.5 Pilot Outside Diameter (mm): 54 Pilot Outside Diameter (in): 2.13 Inside Diameter (mm): 21.5 Inside Diameter (in): 0.85 Mount Height (mm): 24.9 Mount Height (in): 0.98 Bonded Sleeve: Yes Standard Bolt Size: M20