Mitutoyo 64AAA213 Thread Pitch Diameter Measuring Wire

Product Description

The MITUTOYO 64AAA213 is a thread pitch diameter measuring wire designed for precise measurement of thread pitch diameters using the three-wire method. Sized for 36 TPI threads with a 0.03 inch pitch, this wire has a nominal best wire diameter of 0.016 inches and a nominal constant of 0.0221 inches. Each set contains 3 wires, each measuring 1.125 inches in length. Machinists, toolroom technicians, and quality control inspectors use this wire with a micrometer to achieve accurate thread measurement results on external threads.

This measuring wire is suited for inspection and quality assurance work in manufacturing, machining shops, and toolrooms where precise thread verification is required. The 36 TPI specification makes it appropriate for measuring threads in that pitch range, supporting accurate go/no-go determinations and dimensional verification during production or incoming inspection.

Key Features

• Sized for 36 TPI threads with a 0.03 inch pitch
• Nominal best wire diameter of 0.016 inches for accurate three-wire measurement
• Nominal constant of 0.0221 inches simplifies pitch diameter calculation
• Each wire is 1.125 inches long for easy handling during measurement
• Set of 3 wires included per package

Compatibility

Designed for use with the three-wire method of external thread pitch diameter measurement on 36 TPI threads; suitable for use with standard bench or thread-measuring micrometers capable of accommodating 0.016 inch diameter measuring wires.

Installation Notes

Thread pitch diameter measuring wires are used by machinists and metrologists and require no installation in the traditional sense. Ensure the micrometer anvils are clean and the correct wire diameter for the target thread pitch is selected before measurement. Handle wires carefully to avoid deformation, as damage to the wire surface will affect measurement accuracy. Store wires properly when not in use to prevent corrosion or bending.