Mitutoyo 188-121 Screw Pitch Gage 18 Leaf 0.4-7mm

Product Description

The MITUTOYO 188-121 is an 18-leaf screw pitch gage used to identify and verify thread pitch on fasteners, taps, dies, and threaded components. The gage covers a pitch range of 0.4 to 7mm and is built to a 60-degree thread angle, making it suited for standard metric thread profiles. Each leaf is stamped with its corresponding pitch value for fast, direct identification in the field or at a workbench. The stainless steel construction resists corrosion and wear under regular shop use. Machinists, pipefitters, and maintenance technicians rely on this type of gage to quickly confirm thread pitch before cutting, tapping, or sourcing replacement hardware.

This pitch gage is used in machine shops, fabrication facilities, maintenance departments, and field service environments where metric threaded fasteners are common. It is well suited for any application requiring quick thread pitch identification without the need for optical comparators or thread micrometers. The 18-leaf fan-style design keeps all pitch leaves organized and accessible in a single compact tool.

Key Features

• 18 individual pitch leaves covering 0.4 to 7mm pitch range
• 60-degree thread angle matches standard metric thread profiles
• Stainless steel construction for corrosion resistance and durability
• Each leaf stamped with pitch value for quick reference
• Compact fan-style design for easy storage and field use

Compatibility

Designed for use with standard metric threads following a 60-degree thread angle profile, as found on common metric fasteners, taps, and dies across residential, commercial, and industrial applications.

Installation Notes

No installation is required for this hand tool. Handle leaves with care to avoid bending, which can affect accuracy. Keep the gage clean and lightly oiled to prevent corrosion and ensure smooth leaf operation. Store in a dry location away from abrasive materials.