CLAMP/Arinc, size: 3 depth: 1, aluminum, chem-film (alodine) finish. 64397B64397B ARINC Clamp | 3 ATI-S, 1in Depth, Chem-Film FinishMSP avionics clamps eliminate the need for panel removal when repairing or replacing an instrument such as an altimeter or artificial horizon. These patented chem film ..