Spi MS150204001 Mechanical Micrometer Head Flat Spindle

Product Description

The SPI MS150204001 is a mechanical micrometer head designed for precise linear measurement and positioning in machine tools, gauging fixtures, test equipment, and optical instruments. It features a flat spindle face with a 0.2-inch spindle diameter and a 0.51-inch thimble diameter, offering a measurement accuracy of 0.0002 inches. The overall length is 2.64 inches, making it compact enough for integration into tight assemblies. A satin chrome finish provides corrosion resistance and durability in shop environments. This head ships factory-calibrated and includes a short-form certificate of calibration, making it ready to install directly into precision applications. Licensed machinists, metrology technicians, and equipment builders typically specify this component.

The MS150204001 is suited for residential and commercial precision equipment applications including machine instrumentation, electronics manufacturing fixtures, optical instrument assemblies, and general gauging setups. The non-rotating, flat-face spindle design is particularly well suited for applications where surface contact must remain stationary during measurement or actuation. The fixed spindle orientation eliminates part marking or rotation-induced error at the contact point, which is important in sensitive gauging and test equipment builds.

Key Features

• Measurement accuracy to 0.0002 inches for high-precision gauging and positioning
• Flat-face, non-rotating spindle eliminates contact-point rotation error
• 0.51-inch thimble diameter for comfortable manual adjustment
• 2.64-inch overall length fits compact instrument and machine assemblies
• Satin chrome finish for corrosion resistance in shop and lab environments
• Ships factory-calibrated with a short-form certificate of calibration included

Compatibility

Designed as an OEM-style replacement or integration component for precision mechanical assemblies requiring a standard micrometer head with a flat spindle and 0.51-inch thimble diameter.

Installation Notes

Installation is typically performed by metrology technicians or precision machine builders. Secure the micrometer head in its mounting bore or clamp before applying any load to the spindle. Avoid impact or side-loading on the spindle, as this can damage the internal thread and affect accuracy. Verify calibration against a known reference standard after installation and prior to use in any critical gauging application.