Mitutoyo 188-153 Screw Pitch Gage 8-28 Tpi Stainless Steel

Product Description

The MITUTOYO 188-153 is a screw pitch gage set used to identify and verify thread pitch on fasteners and threaded components. It covers a range of 8 to 28 threads per inch, making it suitable for a wide span of coarse and fine unified thread profiles commonly encountered in mechanical and trade work. The blades are constructed from stainless steel for corrosion resistance and long service life. Technicians use this tool to quickly match an unknown thread pitch by trial-fitting the gage blades against the thread profile until a flush, no-gap fit is achieved.

This screw pitch gage is used in HVAC, plumbing, electrical, and general mechanical service settings where fastener identification is required during assembly, repair, or parts sourcing. It is well-suited for shop bench use as well as field service calls where a technician needs to confirm thread specifications on fittings, panels, or equipment housings before ordering replacement hardware.

Key Features

• Covers 8 to 28 threads per inch for a broad range of unified thread profiles
• Stainless steel blade construction resists corrosion and wear
• Compact form factor at 3.8 inches wide and 0.8 inches in length for easy storage in a tool pouch or kit
• Trial-fit blade design allows quick visual and tactile thread identification
• Sold as a single unit, no additional sets required for the stated TPI range

Compatibility

Designed for use with standard unified inch thread fasteners and fittings in the 8 to 28 TPI range, suitable for general mechanical, HVAC, plumbing, and electrical service applications.

Installation Notes

No installation is required for this hand tool. Before use, ensure the threaded component being measured is clean and free of debris that could affect blade seating. Fan each blade carefully to avoid bending, and always select the blade that seats flush with no rocking or gap. This tool is intended for identification and verification purposes only and should not be used as a thread-cutting guide.