Mitutoyo 148-356 Mechanical Micrometer Head 0.25 in

Product Description

The MITUTOYO 148-356 is a mechanical micrometer head designed for precise linear measurement in tooling, fixture, and machine positioning applications. It features a flat rotating spindle with a 6.35 mm (0.25 inch) diameter and a spindle length of 0.6102 inches, housed in a chrome-plated body measuring 1.66 inches overall length. The thimble diameter is 1.14 inches, providing a comfortable grip surface for manual adjustment. Accuracy is rated at 0.0001 inch, making it suitable for applications requiring fine, repeatable positioning. The stem measures 0.375 inches in diameter and 9.5 mm in length for secure mounting in standard micrometer head bores.

This micrometer head is used in metrology, inspection, and precision machine tool setups where controlled linear displacement is needed. It fits into fixtures, stages, and positioning devices found in manufacturing, toolroom, and laboratory environments. The short thimble design with selectable thimble diameter options makes it appropriate for space-constrained installations. Licensed machinists, metrologists, and precision tooling technicians are the primary installers and users of this component.

Key Features

• Accuracy rated to 0.0001 inch for fine positional control
• Flat rotating spindle, 6.35 mm diameter x 0.6102 inches long
• 1.14 inch thimble diameter with short thimble configuration
• SKS3 steel measuring face for durability and wear resistance
• Chrome-plated finish for corrosion resistance
• 0.375 inch diameter stem, 9.5 mm long, for standard mounting bores

Compatibility

Designed as an OEM-style replacement or direct-fit micrometer head for precision fixtures and positioning stages requiring a 0.375 inch stem diameter mount and a 0.25 inch measuring range.

Installation Notes

Installation is performed by machinists or metrology technicians using standard hand tools. Secure the stem in the mounting bore to the specified clamp torque per the fixture manufacturer before use. Ensure the spindle axis is aligned with the direction of travel to avoid side-loading the spindle. Always zero the head against a reference surface before taking measurements.