Starrett 460M Micrometer Head Flat Spindle Face

Starrett 460MB micrometer head features a 0–13 mm measuring range with 0.01 mm graduations and a flat spindle face for stable, repeatable contact in fixture-based metrology. Constructed in steel with a satin chrome finish and a plain thimble, the head also employs a rotating spindle for fine position adjustments during setup, making it a versatile component in modular micrometer systems. The head measures about 2 inches long and 13/32 inch wide, with a spindle diameter of 3.5 mm, compact enough for tight fixtures while delivering precise reference readings. Typical specifications include ±0.002 mm accuracy across its 0–13 mm range, ensuring repeatable measurements when used as part of a larger measurement setup. The flat contact surface minimizes misreads on non-flat workpieces, and the 0.01 mm graduation supports quick, coarse-to-fine readings in inspection or gauging tasks. Widely used in toolmaking, fixturing, and inspection environments, this micrometer head is designed to mate with compatible Starrett bodies and adapters as part of a complete measuring system.