Mitutoyo 64AAA214 Thread Pitch Diameter Measuring Wire

Product Description

The MITUTOYO 64AAA214 is a thread pitch diameter measuring wire used to accurately determine the pitch diameter of threaded components. Designed for use with thread plug gages, this wire set provides a reliable three-wire measurement method that is standard practice in precision metrology. The nominal best wire diameter is 0.018 inches, the pitch is 0.03 inches (32 TPI), and each wire measures 1.125 inches in length. The nominal constant for this wire set is 0.0281 inches. Machinists, quality control technicians, and metrology professionals rely on measuring wires like these to achieve traceable, repeatable pitch diameter results across threaded gages and workpieces.

This wire set is suited for applications involving 32 TPI unified or inch-series threads where accurate pitch diameter verification is required. It is commonly used in gage rooms, machine shops, and manufacturing inspection environments. The three-wire method is widely recognized in precision measurement practice and applies to both internal and external thread inspection when used with appropriate gage blocks and a micrometer. Each set includes 3 wires of matched diameter for consistent results.

Key Features

• 32 TPI thread pitch (0.03 inch pitch) for accurate wire selection per thread specification
• Nominal best wire diameter of 0.018 inches for optimal contact point geometry
• Nominal constant of 0.0281 inches for straightforward pitch diameter calculation
• Wire length of 1.125 inches provides adequate handling length for three-wire setups
• Set of 3 matched-diameter wires for consistent measurement repeatability
• Designed for use with thread plug gages in precision inspection applications

Compatibility

Designed for use with thread plug gages in three-wire pitch diameter measurement setups for 32 TPI inch-series threads.

Installation Notes

Thread measuring wires are used by metrology technicians and precision machinists as part of the three-wire measurement method. No permanent installation is required. Wires should be handled with care to avoid surface damage, as nicks or deformation will affect measurement accuracy. Clean contact surfaces on the micrometer anvils and the thread before use to ensure accurate results.