Spi 37-204-5 Plug Thread Gage M22x1.5 6H Double End

Product Description

The SPI 37-204-5 is a double-end plug thread gage used to verify internal thread quality on M22x1.5 tapped holes to the 6H tolerance class. One end carries the Go member and the other carries the No Go member, allowing a technician to confirm both the minimum material condition and the maximum material condition in a single tool. A handle is included. This gage is suited for precision machining, quality control, and inspection environments where metric thread conformance must be documented against ANSI and NIST traceability standards.

This gage is used in machine shops, manufacturing cells, and inspection departments working with metric M22x1.5 threaded components. Typical applications include verifying tapped holes in hydraulic fittings, fastener bores, and mechanical assemblies where 6H class thread tolerances are specified. The included traceability certification supports quality management system requirements under ISO or similar standards, making it appropriate for both in-process inspection and final acceptance testing.

Key Features

• Double-end design combines Go and No Go gages in a single unit for efficient thread verification
• Calibrated to M22x1.5 thread form at 6H tolerance class
• Handle included for consistent grip and reduced operator fatigue during repeated inspections
• ANSI traceability certification included, referenced to NIST standards
• Compact and lightweight at 0.441 pounds for bench or floor use

Compatibility

Designed for inspection of internal M22x1.5 threads classified to the 6H tolerance standard. Suitable for any tapped hole or threaded bore requiring verification to this metric thread specification.

Installation Notes

Thread gages are inspection tools, not cutting tools — never force the Go end through a hole or use it to clear chips or debris. The Go end should pass through the threaded feature under hand pressure only; the No Go end must not enter more than two turns. Keep gages clean and lightly oiled when stored to prevent corrosion that would affect calibration accuracy. Periodic recalibration by a certified metrology lab is recommended to maintain traceability compliance.