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    10 Products

    Threaded Ring Gauges for Pipe Threads

    Confirm that external pipe threads are sized within tolerance. Manufactured with precision, these gauges meet tight thread tolerances themselves.
    Class X Gauge—NPSM Thread
    Image of Product. Front orientation. Ring Gauges. Threaded Ring Gauges for Pipe Threads.
    Use gauges with NPSM threads in pairs for go/no-go tests. Go gauges check the maximum external thread size, and no-go gauges check the minimum. If the threads you’re testing thread into the go gauge but not the no-go gauge, they’re within tolerance.
    Go Gauge
    No-Go Gauge
    Pipe
    Size
    Hardness
    Material
    Pitch Dia.
    Tolerance
    Each
    Pitch Dia.
    Tolerance
    Each
    1/8
    		Rockwell C60Tool Steel
    		0" to 0.0003"2365A1520000000-0.0003" to 0"2365A1570000000
    1/4
    		Rockwell C60Tool Steel
    		0" to 0.0003"2365A153000000-0.0003" to 0"2365A158000000
    3/8
    		Rockwell C60Tool Steel
    		0" to 0.0003"2365A154000000-0.0003" to 0"2365A159000000
    1/2
    		Rockwell C60Tool Steel
    		0" to 0.0003"2365A155000000-0.0003" to 0"2365A161000000
    3/4
    		Rockwell C60Tool Steel
    		0" to 0.0003"2365A156000000-0.0003" to 0"2365A162000000
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