Mitutoyo 64AAA225 Thread Measuring Wire 13 Tpi 2.25 in

Product Description

The MITUTOYO 64AAA225 is a precision thread pitch diameter measuring wire designed for accurate thread measurement in metrology and quality-control applications. The wire is rated for 13 TPI with a 0.08-inch pitch and measures 2.25 inches in length. The nominal best wire diameter is 0.0444 inches, and the nominal constant is 0.064 inches. Each package contains 3 wires, allowing the standard three-wire method of thread measurement to be performed with a single set. This tool is used by machinists, metrologists, and quality technicians who need reliable thread pitch diameter verification.

The 64AAA225 measuring wire is intended for use with thread plug gages and precision micrometers in shop or lab environments. It is suited to both production-floor inspection and toolroom measurement tasks where 13 TPI unified or similar thread forms require pitch diameter verification. The three-wire measurement method is a widely accepted technique for determining thread pitch diameter to tight tolerances, and this wire set is sized specifically for 13 TPI work.

Key Features

• Designed for 13 TPI threads with a 0.08-inch pitch
• Nominal best wire diameter of 0.0444 inches for accurate three-wire measurement
• Nominal constant of 0.064 inches simplifies pitch diameter calculation
• Wire length of 2.25 inches provides adequate contact area during measurement
• Set of 3 wires supports the standard three-wire measurement method
• Compatible with thread plug gages for integrated inspection workflows

Compatibility

Designed for use with thread plug gages and precision micrometers for 13 TPI thread pitch diameter measurement applications.

Installation Notes

Thread measuring wires are installed by a machinist or metrologist as part of a three-wire measurement setup using a calibrated micrometer. Handle wires carefully to avoid nicks or bending, which can affect measurement accuracy. Keep wires clean and store them in their protective case when not in use to maintain dimensional integrity. No power tools or power shutoff is required for this measuring application.