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    22 Products

    Threaded Taper Pins

    Image of ProductInUse. Tighten the nut to draw the pin out of the hole.. Front orientation. Contains Annotated. Taper Pins. Threaded Taper Pins.

    Tighten the

    nut to draw

    the pin out of

    the hole.

    Threads on these pins stick out for easy removal from blind holes. Tighten the hex nut to draw the pin out. Often used for positioning components and securing assemblies, they taper at a uniform rate to fit in tapered holes. For a snug fit, use a tapered drill bit that matches the pin number for inch sizes or the small end diameter for metric sizes. They have slightly rounded edges to aid insertion.
    Inch
    Image of Product. Front orientation. Contains Annotated. Taper Pins. Threaded Taper Pins, Inch.
    Length for inch pins measures the unthreaded length of the pin.
    12L14 Carbon Steel—12L14 Carbon steel pins have good strength.
    18-8 Stainless Steel—18-8 stainless steel pins offer a balance of strength and corrosion resistance. They may be mildly magnetic.
    Breaking Strength—Breaking strength is measured as single shear, which is the force required to break the pin into two pieces.
    Lg.
    Small End
    Dia.
    Rate of
    Taper
    Thread
    Lg.
    Thread
    Size
    Min.
    Hardness
    Breaking Strength,
    psi
    Pkg.
    Qty.
    Pkg.
    12L14 Carbon Steel
     
    10 Taper Pin—0.704" Large End Diameter
    3"0.644"1:487/8"5/8"-18
    		Rockwell B8546,500192281A615000000
    3 1/2"0.633"1:487/8"5/8"-18
    		Rockwell B8546,500192281A61600000
    4"0.623"1:487/8"5/8"-18
    		Rockwell B8546,500192281A61700000
    4 1/2"0.612"1:487/8"5/8"-18
    		Rockwell B8546,500192281A61800000
    5"0.602"1:487/8"5/8"-18
    		Rockwell B8546,500192281A61900000
    6"0.581"1:487/8"5/8"-18
    		Rockwell B8546,500192281A62200000
     
    18-8 Stainless Steel
     
    10 Taper Pin—0.704" Large End Diameter
    3"0.644"1:487/8"5/8"-18
    		Rockwell B9054,000192284A61500000
    3 1/2"0.633"1:487/8"5/8"-18
    		Rockwell B9054,000192284A61600000
    4"0.623"1:487/8"5/8"-18
    		Rockwell B9054,000192284A61700000
    4 1/2"0.612"1:487/8"5/8"-18
    		Rockwell B9054,000192284A61800000
    5"0.602"1:487/8"5/8"-18
    		Rockwell B9054,000192284A61900000
    6"0.581"1:487/8"5/8"-18
    		Rockwell B9054,000192284A62200000
     

    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
    5/8"-18
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock Handle
    Unified Standard Class 2B
    ,
    Unified Standard Class 3B
    		7935N1070000000
     
    Plug Gauges with Calibration Certificate Traceable to NIST
    5/8"-18
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock Handle
    Unified Standard Class 2B
    ,
    Unified Standard Class 3B
    		7938N107000000
     

    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

    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
    5/8"-18
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock Handle
    Unified Standard Class 2B
    ,
    Unified Standard Class 3B
    		2366A5340000000
     
    Go/No-Go Gauges with Calibration Certificate Traceable to NIST
    5/8"-18
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock Handle
    Unified Standard Class 2B
    ,
    Unified Standard Class 3B
    		3157A43000000
     

    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
    5/8"-18
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N31000000
     
    Go Gauges with Accuracy Certificate Traceable to NIST
    5/8"-18
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N12100000
     
    No-Go Gauges
    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
     
    No-Go Gauges with Accuracy Certificate Traceable to NIST
    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
     
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