Spi Z9300M Ball Anvil Outside Micrometer

Product Description

The SPI Z9300M is a chrome-plated steel ball anvil designed as an accessory for outside micrometers. The ball-type anvil provides a precise contact point for accurate measurements in applications where a flat anvil face is not suitable. Constructed from chrome-plated steel, this anvil delivers consistent surface hardness and corrosion resistance in shop environments. It is sized at 5.00 millimeters in diameter and weighs approximately 0.02 pounds. Machinists, tool-and-die makers, and precision measurement technicians typically specify ball anvils when measuring curved surfaces, grooves, or wire stock where a flat contact would introduce measurement error.

The Z9300M ball anvil is suited for use in precision metrology applications found in machine shops, manufacturing facilities, and inspection departments. It is intended for technicians who require an alternative anvil configuration on their outside micrometers when standard flat anvils are not appropriate for the workpiece geometry. The part ships as a single-piece unit and is compatible with outside micrometer frames that accept interchangeable anvil accessories.

Key Features

• Ball-type anvil geometry for accurate contact on curved or irregular surfaces
• Chrome-plated steel construction for surface hardness and corrosion resistance
• 5.00 millimeter anvil diameter for consistent measurement contact area
• Designed for use with outside micrometers accepting interchangeable anvils
• Lightweight at 0.02 pounds for easy handling and installation

Compatibility

Designed for use with outside micrometers that accept interchangeable anvil accessories. Verify anvil thread size and seating dimensions against your specific micrometer frame before ordering.

Installation Notes

Installation is performed by qualified metrology technicians or machinists familiar with micrometer maintenance procedures. Before replacing or swapping the anvil, ensure the micrometer spindle is fully retracted and the instrument is off any live measurement surface. Use the appropriate spanner wrench or anvil removal tool specified by the micrometer manufacturer to avoid damaging the anvil seat or frame threads. After installation, verify zero calibration of the micrometer using a reference standard before returning the instrument to service.