Description
The Insize 4643-5C1 American Thread Plug Gauge is a precision inspection tool designed for checking internal 5/8-11 UNC threads to Class 2B standards. Manufactured for accurate GO and NO GO thread verification, this gauge ensures threaded holes comply with dimensional tolerance requirements in machining, engineering, manufacturing, and quality control applications.
Constructed from hardened tool steel with precision-ground threads, the gauge provides excellent wear resistance, repeatability, and long service life. The double-ended GO/NO GO design allows fast and reliable thread inspection during production and final quality checks.
Key Features & Benefits
- Precision American thread plug gauge for internal thread inspection
- Thread size: 5/8-11 UNC
- Class 2B thread tolerance
- GO and NO GO ends for accurate thread verification
- Designed for checking Unified National Coarse (UNC) threads
- Hardened and precision-ground for durability and accuracy
- Suitable for workshop, machining, manufacturing, and QA inspection
- Provides reliable and repeatable thread measurement results
Technical Specifications
- Part Number: 4643-5C1
- Thread Type: UNC Unified National Coarse
- Thread Size: 5/8-11 UNC
- Tolerance Class: 2B
- Gauge Type: GO / NO GO Thread Plug Gauge
- Application: Internal thread inspection
- Material: Hardened tool steel
The Insize 4643 series thread plug gauges are ideal for precision thread inspection in machining workshops, toolrooms, engineering production, maintenance facilities, and quality assurance environments where accurate thread verification is essential.
Insize is globally recognised for producing reliable precision measuring instruments and inspection equipment trusted by machinists, engineers, and quality control professionals worldwide.
