Balax 90767-000 Thread Insert Go No Go Gage 2-56 Class 3B

Product Description

The BALAX 90767-000 is a double-ended screw thread insert Go/No Go plug gage used to verify internal thread quality in tapped holes. Manufactured from high speed tool steel, this gage checks 2-56 unified thread inserts to Class 3B tolerance limits. The double-ended design combines the Go and No Go members in a single tool with an included handle, allowing a technician to perform both acceptance checks without swapping tools. It is used in production, inspection, and quality control environments where threaded fastener holes must meet ANSI dimensional standards before assembly proceeds.

This gage is suited for inspecting 2-56 thread inserts in both light manufacturing and precision assembly applications. The compact 2-56 thread size is common in small-frame assemblies, instrument enclosures, and electronic hardware where controlled thread fit is critical. A Class 3B classification indicates a close-tolerance internal thread, requiring a gage of matching precision. Machinists, quality inspectors, and toolroom technicians working to ANSI standards will reach for this tool as part of a standard thread inspection routine.

Key Features

• Double-ended construction combines Go and No Go members in one tool
• High speed tool steel construction for hardness and wear resistance
• Checks 2-56 thread inserts to Class 3B tolerance per ANSI standards
• Handle included for secure grip during inspection
• Single-piece inspection workflow eliminates the need for a separate gage set

Compatibility

Designed for use with 2-56 Class 3B screw thread inserts in tapped holes inspected to ANSI thread standards.

Installation Notes

Thread plug gages are inspection tools, not cutting tools - apply only hand pressure when threading the Go member into the hole. The Go member must pass fully through the threaded insert; the No Go member must not enter more than two turns. Keep gages clean and lightly oiled when stored to prevent corrosion on the tool steel. Calibration and gage certification intervals should follow your facility's quality management plan or applicable metrology standards.