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    136 Products

    Go/No-Go Threaded Plug Gauges with Handle

    Speed up thread tolerance checks—the handle on these gauges gives you a good grip to quickly thread and unthread go or no-go gauges. Use these gauges to make sure nuts, tapped holes, and other parts fall within tolerance. All are precisely manufactured to confirm thread fit. If the plug gauges wear down, you can insert new ones (not included) onto the taperlock handle.
    A part is within tolerance if it’s easy to thread the go gauge into the part but difficult to thread the no-go gauge more than two turns.
    Go/no-go gauges have both a go gauge on one end of the handle and a no-go gauge on the other to speed up tests. Go gauges check the minimum internal thread size. No-go gauges check the maximum internal thread size.
    Class X Gauge
    Image of Product. Double-Ended Taperlock Handle. Front orientation. Plug Gauges. Go/No-Go Threaded Plug Gauges with Handle.

    Double-Ended Taperlock

    Handle

    Accuracy Certificate Traceable to NIST—Gauges with an accuracy certificate traceable to NIST include verification from the manufacturer that their thread sizes are within tolerance. The certificate is also known as a certificate of compliance or a short-form certification.
    Calibration Certificate Traceable to NIST—Gauges with a calibration certificate traceable to NIST were calibrated in a lab. The certificate, sometimes called a test report or long-form certificate, details the tested measurements.
    For Class 2B Unified Standard Thread Fit—For inch threads, the higher the class number, the tighter the fit. Unified Standard Class 2B is standard and works for most applications.
    For Thread Fit—Thread fit designates the tightness or looseness of mating threads.
    Thread
    Size
    Thread
    Type
    Pitch Dia.
    Tolerance
    Hardness
    Material
    Features
    Choose a Thread Fit
    Each
    Go/No-Go Gauges
    0-80
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A5010000000
    1-72
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A503000000
    4-48
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A509000000
    6-40
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A514000000
    8-36
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A516000000
    10-32
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A518000000
    1/4"-28
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A52300000
    5/16"-24
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A52500000
    3/8"-24
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A52700000
    7/16"-20
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A52900000
    1/2"-20
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A532000000
    9/16"-18
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A153000000
    5/8"-18
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A534000000
    3/4"-16
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A536000000
    7/8"-14
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A538000000
    1"-12
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A541000000
    1 1/8"-12
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A544000000
    1 1/4"-12
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A546000000
     
    Go/No-Go Gauges with Accuracy Certificate Traceable to NIST
    2-64
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A301000000
    3-56
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A304000000
    5-44
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A305000000
    12-28
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A302000000
    1 3/8"-12
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A321000000
    1 1/2"-12
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A303000000
     
    Go/No-Go Gauges with Calibration Certificate Traceable to NIST
    0-80
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A11000000
    1-72
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A13000000
    2-64
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A15000000
    3-56
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A61000000
    4-48
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A18000000
    5-44
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A62000000
    6-40
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A22000000
    8-36
    		UNF
    		-0.0002" to 0.0002"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A24000000
    10-32
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A26000000
    12-28
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A28000000
    1/4"-28
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A31000000
    5/16"-24
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A33000000
    3/8"-24
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A35000000
    7/16"-20
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A37000000
    1/2"-20
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A39000000
    9/16"-18
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A41000000
    5/8"-18
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A43000000
    3/4"-16
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A45000000
    7/8"-14
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A47000000
    1"-12
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A49000000
    1 1/8"-12
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A51000000
    1 1/4"-12
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A53000000
    1 3/8"-12
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A77000000
    1 1/2"-12
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A55000000
     

    Go/No-Go Left-Hand Threaded Plug Gauges with Handle

    A go and no-go gauge in one, these gauges check that left-hand threads fall within tolerance. Use them to confirm thread fit for nuts, tapped holes, and other parts. The taperlock handle speeds up tests, giving you a good grip to thread and unthread each gauge end. It also lets you swap out worn gauges for new ones (not included) on either end.
    The go gauge checks the minimum internal thread size, and the no-go gauge checks the maximum. A part is within tolerance if it’s easy to thread the go gauge but difficult to thread the no-go gauge more than two turns.
    Class X Gauge
    Image of Product. Front orientation. Plug Gauges. Go/No-Go Left-Hand Threaded Plug Gauges with Handle.
    Plug Gauges with Accuracy Certificate Traceable to NIST—Gauges with an accuracy certificate traceable to NIST include verification from the manufacturer that their thread sizes are within tolerance. The certificate is also known as a certificate of compliance or a short-form certification.
    Plug Gauges with Calibration Certificate Traceable to NIST—Gauges with a calibration certificate traceable to NIST were calibrated in a lab. The certificate, sometimes called a test report or long-form certificate, details the tested measurements.
    For Class 2B Unified Standard Thread Fit—For inch threads, the higher the class number, the tighter the fit. Unified Standard Class 2B is standard and works for most applications.
    For Thread Fit—Thread fit designates the tightness or looseness of mating threads.
    Thread
    Size
    Thread
    Type
    Pitch Dia.
    Tolerance
    Hardness
    Material
    Features
    Choose a Thread Fit
    Each
    Plug Gauges with Accuracy Certificate Traceable to NIST
    10-32
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7935N1010000000
    1/4"-28
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7935N102000000
    5/16"-24
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7935N103000000
    3/8"-24
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7935N104000000
    7/16"-20
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7935N105000000
    1/2"-20
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7935N106000000
    5/8"-18
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7935N107000000
    3/4"-16
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7935N108000000
    1 1/4"-12
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7935N109000000
     
    Plug Gauges with Calibration Certificate Traceable to NIST
    10-32
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7938N101000000
    1/4"-28
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7938N102000000
    5/16"-24
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7938N103000000
    3/8"-24
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7938N104000000
    7/16"-20
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7938N105000000
    1/2"-20
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7938N106000000
    5/8"-18
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7938N107000000
    3/4"-16
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7938N108000000
    1 1/4"-12
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7938N109000000
     

    Threaded Plug Gauges

    Test if internal threads fall within tolerance. These plug gauges are often used in nuts and tapped holes to confirm thread fit. For precision and accuracy, they’re manufactured to tight tolerances.
    Threads are within tolerance if it’s easy to thread a go gauge but difficult to thread a no-go gauge more than two turns.
    Class X Gauge
    Image of Product. Front orientation. Plug Gauges. Threaded Plug Gauges.
    Go Gauge—Go gauges check the minimum hole diameter.
    No-Go Gauge—No-go gauges check the maximum hole diameter.
    Accuracy Certificate Traceable to NIST—Gauges with an accuracy certificate traceable to NIST include verification from the manufacturer that their thread sizes are within tolerance. The certificate is also known as a certificate of compliance or a short-form certification.
    For Class 2B Unified Standard Thread Fit—For inch threads, the higher the class number, the tighter the fit. Unified Standard Class 2B is standard and works for most applications.
    For Thread Fit—Thread fit designates the tightness or looseness of mating threads.
    Thread
    Size
    Thread
    Type
    Pitch Dia.
    Tolerance
    Hardness
    Material
    For Thread Fit
    Each
    Go Gauges
    0-80
    		UNF
    		0" to 0.0002"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N11000000
    10-32
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N1700000
    1/4"-28
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N1900000
    5/16"-24
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N2200000
    3/8"-24
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N2400000
    7/16"-20
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N2500000
    1/2"-20
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N2700000
    9/16"-18
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N2800000
    5/8"-18
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N3100000
    3/4"-16
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N3300000
     
    Go Gauges with Accuracy Certificate Traceable to NIST
    0-80
    		UNF
    		0" to 0.0002"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N10100000
    10-32
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N10700000
    1/4"-28
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N10900000
    5/16"-24
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N11200000
    3/8"-24
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N11400000
    7/16"-20
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N11500000
    1/2"-20
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N11700000
    9/16"-18
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N11800000
    5/8"-18
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N12100000
    3/4"-16
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N12300000
     
    No-Go Gauges
    0-80
    		UNF
    		-0.0002" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N4400000
    0-80
    		UNF
    		-0.0002" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N4500000
    10-32
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N5200000
    10-32
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N5300000
    1/4"-28
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N5500000
    1/4"-28
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N5600000
    5/16"-24
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N5800000
    5/16"-24
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N5900000
    3/8"-24
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N6200000
    3/8"-24
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N6300000
    7/16"-20
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N6400000
    7/16"-20
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N6500000
    1/2"-20
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N6700000
    1/2"-20
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N6800000
    9/16"-18
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N6900000
    9/16"-18
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N7100000
    5/8"-18
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N7300000
    5/8"-18
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N7400000
    3/4"-16
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N7600000
    3/4"-16
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N7700000
     
    No-Go Gauges with Accuracy Certificate Traceable to NIST
    0-80
    		UNF
    		-0.0002" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N13400000
    0-80
    		UNF
    		-0.0002" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N13500000
    10-32
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N14200000
    10-32
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N14300000
    1/4"-28
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N14500000
    1/4"-28
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N14600000
    5/16"-24
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N14800000
    5/16"-24
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N14900000
    3/8"-24
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N15200000
    3/8"-24
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N15300000
    7/16"-20
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N15400000
    7/16"-20
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N15500000
    1/2"-20
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N15700000
    1/2"-20
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N15800000
    9/16"-18
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N15900000
    9/16"-18
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N16100000
    5/8"-18
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N16300000
    5/8"-18
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N16400000
    3/4"-16
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B
    		7968N16600000
    3/4"-16
    		UNF
    		-0.0003" to 0"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 3B
    		7968N16700000
     

    Go/No-Go Helical Insert Threaded Plug Gauges with Handle

    Image of Product. Front orientation. Plug Gauges. Go/No-Go Helical Insert Threaded Plug Gauges with Handle.
    Check that holes tapped for helical threads are within tolerance. You’ll sometimes hear these threads referred to as Screw Thread Insert (STI) threads. To speed up tests, these gauges have a go gauge on one end and a no-go gauge on the other. The double-ended taperlock handle makes them quick to thread and unthread. It also lets you swap in new plug gauges (not included) in place of worn ones.
    The go gauge checks the minimum internal thread size, and the no-go gauge checks the maximum. A part is within tolerance if it’s easy to thread the go gauge but difficult to thread the no-go gauge more than two turns.
    Plug Gauges with Accuracy Certificate Traceable to NIST—Gauges with an accuracy certificate traceable to NIST include verification from the manufacturer that their thread sizes are within tolerance. The certificate is also known as a certificate of compliance or a short-form certification.
    Plug Gauges with Calibration Certificate Traceable to NIST—Gauges with a calibration certificate traceable to NIST were calibrated in a lab. The certificate, sometimes called a test report or long-form certificate, details the tested measurements.
    Plug Gauges with Accuracy
    Certificate Traceable to NIST
    Plug Gauges with Calibration
    Certificate Traceable to NIST
    Thread
    Size
    Thread
    Type
    Pitch Dia.
    Tolerance
    Hardness
    Material
    Features
    For Thread Fit
    Each
    Each
    Class X Gauge
    10-32
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B
    		7941N1600000007941N340000000
    1/4"-28
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B
    		7941N180000007941N36000000
    5/16"-24
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B
    		7941N210000007941N38000000
    3/8"-24
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B
    		7941N230000007941N41000000
    1/2"-20
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B
    		7941N250000007941N43000000
     
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