Description
Insize 4131-21 GO / NO-GO Thread Plug Gauge – No. 2-56 UNC, Class 2B
The Insize 4131-21 GO / NO-GO thread plug gauge is a precision inspection tool designed for checking internal threads to ANSI/ASME B1.2 standards. Covering No. 2-56 UNC threads in Class 2B tolerance, this gauge allows fast and reliable verification of thread size and form in production and quality control environments.
Supplied as a matched GO and NO-GO pair in a single handle, the 4131-21 ensures accurate pass/fail inspection to confirm correct thread manufacture. Each gauge is manufactured to high precision and supplied with a manufacturer inspection certificate for traceability and confidence in measurement accuracy.
Key Features & Benefits
- Part Number: 4131-21
- Thread Size: No. 2-56 UNC
- Thread Class: 2B
- Type: GO / NO-GO thread plug gauge
- Supplied with GO and NO-GO gauges together
- Manufactured to ANSI/ASME B1.2 standards
- Ideal for workshop and inspection use
Technical Specifications
- Model: 4131-21
- Thread Form: UNC
- Thread Size: No. 2-56
- Thread Tolerance Class: 2B
- Standard: ANSI/ASME B1.2
- Certificate: Manufacturer inspection certificate supplied
Insize is a globally recognised manufacturer of precision measuring and inspection instruments, trusted by professionals worldwide for accuracy, durability, and consistent quality.
Genuine Insize product supplied by an authorised distributor.
