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    UNC (Unified National Coarse) Thread Gauges

    Go & No-Go Plug & Ring gauges from Insize & premium German supplier JBO in unified national coarse (UNC) thread form.

      Shop Now UNC Plug Gauges
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    1. 1 1/2“
    2. 1 1/4“
    3. 1 1/8“
    4. 1 3/4“
    5. 1 3/8"
    6. 1 3/8“
    7. 1/2"
    8. 1/2“
    9. 1/4"
    10. 1/4“
    11. 1“
    12. 2 1/2“
    13. 2 1/4“
    14. 2 3/4"
    15. 2 3/4“
    16. 2“
    17. 3/4"
    18. 3/4“
    19. 3/8"
    20. 3/8“
    21. 4
    22. 5/16"
    23. 5/16“
    24. 5/8"
    25. 5/8“
    26. 6
    27. 7/16“
    28. 7/8“
    29. 8
    30. 9/16“
    31. No.1
    32. No.10
    33. No.12
    34. No.2
    35. No.3
    36. No.4
    37. No.5
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    39. No.8
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    9. 24
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    11. 4
    12. 4 1/2
    13. 40
    14. 48
    15. 5
    16. 56
    17. 6
    18. 64
    19. 7
    20. 8
    21. 9
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    2. Ring Gauge
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    Type
    1. Go
    2. Go/No-Go
    3. No-Go
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    Calibrated
    1. No
    2. Yes
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    Tolerance
    1. 2A
    2. 2B
    3. 3A
    4. 3B
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    Coating
    1. Oil Hardened
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    Brand
    1. Insize
    2. JBO (Johs Boss)
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