Spi 37-100-5 Plug Thread Gage M1.6x0.35 6H Single End Go

Product Description

The SPI 37-100-5 is a single-end Go plug thread gage designed to verify internal thread conformance on M1.6x0.35 metric threads classified to the 6H tolerance standard. Technicians use this gage to confirm that a threaded bore falls within the acceptable dimensional range before assembly — a pass on the Go member indicates the thread is not undersize. The handle is not included with this gage; a separate compatible handle must be sourced and fitted prior to use. Weighing approximately 0.044 pounds, the 37-100-5 is a compact precision instrument suited for quality control inspection in machining, manufacturing, and mechanical assembly environments.

This gage is intended for inspecting small-diameter metric threaded holes with an M1.6x0.35 thread form. It is appropriate for use in production floor inspection, incoming parts verification, and in-process quality checks. The single-end Go configuration is used when only acceptance verification is needed, separate from a No-Go check. Traceability documentation conforming to ANSI standards and traceable to NIST is included, supporting calibration records and quality management system requirements.

Key Features

• Go member confirms internal thread is within the acceptable lower dimensional limit for M1.6x0.35 threads
• 6H tolerance classification per standard metric thread specification
• ANSI traceability certification included, with standards traceable to NIST
• Single-end design for dedicated Go inspection without No-Go member
• Lightweight at 0.044 pounds, suited for small-part and precision assembly inspection
• Handle not included — compatible handle required for operation

Compatibility

Designed for use with standard plug gage handles compatible with the 37-100-5 gage blank diameter. Suitable for inspecting M1.6x0.35 6H classified internal threads in any material or application requiring metric thread verification.

Installation Notes

Installation is performed by a quality technician or machinist — thread gages require a compatible handle, which must be acquired separately and properly secured before use. Do not force the Go gage into a threaded bore; entry should be smooth with hand pressure only. Store gages in a protective case away from contaminants and temperature extremes to maintain calibration integrity. Periodic re-calibration intervals should follow your facility quality management plan in accordance with applicable ANSI or ISO standards.