Mitutoyo 64AAA226 Thread Pitch Diameter Wire 12 Tpi

Product Description

The MITUTOYO 64AAA226 is a precision thread pitch diameter measuring wire set used to accurately measure the pitch diameter of threaded workpieces. Rated for 12 TPI with a 0.08 inch pitch, each wire in the set is 2.25 inches long and has a nominal best wire diameter of 0.04811 inches. The nominal constant for this set is 0.0751 inches. These measuring wires are placed in thread grooves and used in conjunction with a micrometer to calculate pitch diameter through the three-wire measurement method. Each set contains 3 wires. Machinists, toolroom technicians, and quality control professionals rely on this type of precision tooling for thread inspection work.

These measuring wires are suited for use in toolroom, manufacturing, and quality assurance environments where accurate thread inspection is required. They are designed for use with thread plug gages and standard bench micrometers. Applications include inspection of external threads on precision machined components across aerospace, automotive, and general manufacturing settings. The set is sold as a package quantity of 1, containing 3 wires per set.

Key Features

• 12 TPI thread pitch rating with 0.08 inch decimal pitch
• Nominal best wire diameter of 0.04811 inches for accurate three-wire measurements
• Nominal constant of 0.0751 inches for direct pitch diameter calculation
• Wire length of 2.25 inches provides adequate contact area for stable seating in thread grooves
• Set includes 3 wires for proper three-wire measurement method setup
• Compatible with thread plug gages for comprehensive thread inspection workflows

Compatibility

Designed for use with thread plug gages and bench micrometers for three-wire pitch diameter measurement of external threads at 12 TPI with a 0.08 inch pitch.

Installation Notes

Thread measuring wires are used by machinists and quality technicians and require no permanent installation. Place the three wires into the thread grooves of the workpiece and measure across them with a calibrated micrometer. Handle wires carefully to avoid bending or surface damage, as deformation will affect measurement accuracy. Store wires in their original case when not in use to prevent contamination and wear.