1-1/2"-4 LH ACME Threaded Shaft Collar One-Piece Split Clamp-Type, SteelFit standard ACME threaded shafts Right and Left Hand versions Can be placed anywhere on shaft Superior holding power over set screw type collars ACME Threaded Collars are used on standard ACME threaded shafts, either left or right hand thread). They are perfect for applications such as stroke limiting, stops, and height and spring tensioning. The 2 Piece Clamp Type design allows the collars to be completely disassembled and placed anywhere on a