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): 114 Head Outside Diameter (in): 4.49 Head Thickness (mm): 30.5 Head Thickness (in): 1.2 Pilot Outside Diameter (mm): 61.5 Pilot Outside Diameter (in): 2.42 Inside Diameter (mm): 21.5 Inside Diameter (in): 0.85 Mount Height (mm): 44 Mount Height (in): 1.73 Bonded Sleeve: Yes Standard Bolt Size: M20