Precision NOGO Thread Plug Gauge (Tol. 2B) - UNC 3" x 4

• Use for functional GO and NO GO inspection of threads in quality control and production checks.
• Use to verify internal threads after tapping, thread forming, or rework operations.
• Use in incoming inspection to verify supplier parts against drawing requirements.
• Process: manual driving or assisted driving depending on your holder and machine setup
• Use: thread cutting, re tapping, and thread cleaning depending on condition

Note Apply the gauge without force and keep the gauging surfaces clean to avoid false results.

• Reduces interpretation variability compared with free hand measurements.
• Supports process capable inspection routines in production and incoming goods checks.
• Provides a fast pass fail decision without calculations or measuring equipment.
• GO and NO GO ends help detect oversize and form errors that affect assembly.

• Does not deliver a measured value, only an acceptance decision based on limits.
• Requires clean threads and careful handling, so it is not ideal in heavily contaminated environments.

1. Clean the thread on the workpiece and remove chips, oil, and burrs.
2. Check that the gauge type and thread system match the workpiece specification.
3. Apply the GO side first and turn or screw it in by hand without force.
4. Apply the NO GO side and confirm it does not enter beyond the allowed engagement.
5. Record the result according to your inspection plan and isolate nonconforming parts.
6. Clean the gauge surfaces and apply light protection against corrosion before storage.

Scope of supply is defined by your order confirmation and delivery note.

• Product type: Plug gauge
• Thread system: UNC
• Tolerance class: 2B
• Gauging side: NO GO