Spi 23-145-6 Threaded Ring Gage 10-32 Class 2A Go No Go

Product Description

The SPI 23-145-6 is a double-ring threaded ring gage used to inspect 10-32 UNF external threads to Class 2A tolerance. The set includes both a Go ring and a No Go ring, allowing technicians to verify that a threaded fastener or component falls within the acceptable tolerance band in a single tool package. Constructed from tool steel for wear resistance and dimensional stability, this gage carries NIST traceability certification, making it suitable for quality-control environments where documented calibration is required. Machinists, quality inspectors, and tool-room technicians use this type of gage as part of incoming inspection and in-process thread verification routines.

This gage is designed for inspecting 10-32 externally threaded parts in production, repair, or inspection settings. Class 2A is the standard tolerance class for most general-purpose inch-series fasteners and threaded components, making this gage widely applicable across manufacturing, maintenance, and assembly operations. The double-ring configuration consolidates Go and No Go inspection into one compact unit, reducing setup time on the inspection bench or shop floor.

Key Features

• Go and No Go rings included in a single double-ring gage body
• Inspects 10-32 UNF external threads to Class 2A tolerance
• Tool steel construction for durability and dimensional stability
• NIST traceability certification included for documented quality systems
• Conforms to NIST standards for thread gage accuracy

Compatibility

Designed for inspection of 10-32 UNF externally threaded fasteners and components manufactured to Class 2A tolerance specifications.

Installation Notes

Threaded ring gages are a hand-inspection tool and require no installation. Apply the Go ring to the threaded part — it should pass freely along the full thread length. Apply the No Go ring — it should not engage more than two turns. Store gages in a protective case away from moisture and abrasive surfaces to preserve calibration. Periodic recalibration against NIST-traceable masters is recommended per your quality management system requirements.