Mazak 42621649740 Square Spacer/Locator Block, 20X20X4 4T for Cat

The Mazak 42621649740 is an OEM precision‑machined block used in Mazak CNC machines. It is a square spacer/locator block with a through‑hole, dimensioned at 20 mm × 20 mm × 4 mm thick. These blocks are typically used in Mazak CAT‑series machine assemblies as stops, spacers, clamp interfaces, or precision locating pads in sheet‑metal, guarding, sensor mounts, or small mechanical subassemblies. Technical Specifications Part Number: 42621649740 Description (OEM Label): BLOCK 20X20X4, 4T FOR CAT Dimensions: 20 mm × 20 mm × 4 mm Thickness: 4 mm (“4T” marking) Feature: Central through‑hole (machined) Material: Hardened or ground steel plate (inferred from appearance) Edges: Chamfered edges on top side Function: Spacer block, stop block, clamp interface, or alignment pad (varies by machine location) Application: Mazak CAT‑series machine assemblies (exact mechanism varies by machine revision) Manufacturer: Mazak Corporation Country of Manufacture: Japan Please review pictures carefully and let us know if you have any questions!