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    52 Products

    Single-End Studs

    Image of Product. Front orientation. Single-End Studs.
    Screw the threaded end of these studs into a tapped hole, and use the unthreaded end as a pivot point, hinge, shaft, or locator pin.
    18-8 Stainless Steel—Made from 18-8 stainless steel, these studs are chemical resistant and may be mildly magnetic.
    Shaft
    Lg.
    Thread
    Lg.
    Lg.
    Dia.
    Dia. Tolerance
    Tensile Strength,
    psi
    Hardness
    Each
    18-8 Stainless Steel
     
    5/16"-24
    1"1/2"1/2"5/16"-0.005" to 0.005"70,000Not Rated97042A20300000
    1 1/2"3/4"3/4"5/16"-0.005" to 0.005"70,000Not Rated97042A2040000
    2"3/4"1 1/4"5/16"-0.005" to 0.005"70,000Not Rated97042A2050000
    2 1/2"3/4"1 3/4"5/16"-0.005" to 0.005"70,000Not Rated97042A2060000
    3"3/4"2 1/4"5/16"-0.005" to 0.005"70,000Not Rated97042A2070000
    3 1/2"3/4"2 3/4"5/16"-0.005" to 0.005"70,000Not Rated97042A2080000
    4"3/4"3 1/4"5/16"-0.005" to 0.005"70,000Not Rated97042A20900000
    4 1/2"3/4"3 3/4"5/16"-0.005" to 0.005"70,000Not Rated97042A21100000
    5"3/4"4 1/4"5/16"-0.005" to 0.005"70,000Not Rated97042A21200000
    6"3/4"5 1/4"5/16"-0.005" to 0.005"70,000Not Rated97042A21400000
     

    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
     
    6 Taper Pin—0.339" Large End Diameter
    1 1/4"0.315"1:483/8"5/16"-24
    		Rockwell B8546,500592281A342000000
    1 1/2"0.31"1:483/8"5/16"-24
    		Rockwell B8546,500592281A34300000
    1 3/4"0.305"1:483/8"5/16"-24
    		Rockwell B8546,500592281A34400000
    2"0.299"1:483/8"5/16"-24
    		Rockwell B8546,500592281A34500000
    2 1/4"0.294"1:483/8"5/16"-24
    		Rockwell B8546,500592281A34600000
    2 1/2"0.289"1:483/8"5/16"-24
    		Rockwell B8546,500592281A34700000
    3"0.279"1:483/8"5/16"-24
    		Rockwell B8546,500592281A34900000
    4"0.258"1:483/8"5/16"-24
    		Rockwell B8546,500192281A3530000
    5"0.237"1:483/8"5/16"-24
    		Rockwell B8546,500192281A3570000
    6"0.216"1:483/8"5/16"-24
    		Rockwell B8546,500192281A3610000
     
    18-8 Stainless Steel
     
    6 Taper Pin—0.339" Large End Diameter
    1 1/4"0.315"1:483/8"5/16"-24
    		Rockwell B9054,000192284A3420000
    1 1/2"0.31"1:483/8"5/16"-24
    		Rockwell B9054,000192284A3430000
    1 3/4"0.305"1:483/8"5/16"-24
    		Rockwell B9054,000192284A3440000
    2"0.299"1:483/8"5/16"-24
    		Rockwell B9054,000192284A3450000
    2 1/4"0.294"1:483/8"5/16"-24
    		Rockwell B9054,000192284A3460000
    2 1/2"0.289"1:483/8"5/16"-24
    		Rockwell B9054,000192284A3470000
    3"0.279"1:483/8"5/16"-24
    		Rockwell B9054,000192284A3490000
    4"0.258"1:483/8"5/16"-24
    		Rockwell B9054,000192284A3530000
    5"0.237"1:483/8"5/16"-24
    		Rockwell B9054,000192284A35700000
    6"0.216"1:483/8"5/16"-24
    		Rockwell B9054,000192284A36100000
     

    Single-End Studs with Cotter Pin

    Image of Product. Front orientation. Single-End Studs. Single-End Studs with Cotter Pin.
    Also known as hood pins, these studs have a cotter pin lodged through a drilled hole in the unthreaded portion for light duty holding, such as securing access panels and locking other fasteners.
    18-8 Stainless Steel—Stud and cotter pin are 18-8 stainless steel, making them chemical resistant and mildly magnetic.
    Shaft
    Cotter
    Pin
    Lg.
    Thread
    Lg.
    Lg.
    Dia.
    Dia. Tolerance
    Lg.
    Hole
    Dia.
    Tensile
    Strength
    Hardness
    Each
    18-8 Stainless Steel
     
    5/16"-24
    2"1"1"5/16"-0.005" to 0.005"2"0.141"Not RatedRockwell B8993712A10000000
    3"2"1"5/16"-0.005" to 0.005"3"0.141"Not RatedRockwell B8993712A2000000
    4"3"1"5/16"-0.005" to 0.005"4"0.141"Not RatedRockwell B8993712A3000000
     

    Steel Cotter-Pin-Locking Hex Head Screws

    Image of ProductInUse. Front orientation. Contains Annotated, Border. Hex Head Screws. Steel Cotter-Pin-Locking Hex Head Screws.
    Image of Product. Front orientation. Hex Head Screws. Steel Cotter-Pin-Locking Hex Head Screws, Partially Threaded.

    Partially

    Threaded

    Secure rotating parts subjected to vibration, such as the wheels on carts and hand trucks. A cotter pin (not included) slides through the hole in the shank of these screws to keep nuts from loosening. They hold stronger than screws with threadlocker and lockwashers, but they aren’t recommended for high-vibration applications because prolonged stress can shear the pin. The head's six flat sides keep wrenches and sockets from slipping and rounding off the drive.
    Length is measured from under the head.
    Medium-Strength Fastener—Your go-to screws for fastening most machinery and equipment. They have tensile strengths from 90,000 to 120,000 psi.
    Cadmium-Plated Steel—The plating reduces friction between the screw and your mounting surface to prevent sticking when you tighten or loosen screws. It also creates a barrier against rust.
    Head
    Lg.
    Wd.
    Ht.
    Hole
    Dia.
    For Cotter
    Pin Dia.
    Threading
    Thread
    Spacing
    Tensile Strength,
    psi
    Mil.
    Spec.
    Pkg.
    Qty.
    Pkg.
    Medium-Strength Cadmium-Plated Steel
     
    5/16"-24
    27/32"1/2"13/64"0.076"1/16"Partially ThreadedFine
    		120,000AN5-6594622A22100000
    1 3/32"1/2"13/64"0.076"1/16"Partially ThreadedFine
    		120,000AN5-10594622A22200000
    1 11/32"1/2"13/64"0.076"1/16"Partially ThreadedFine
    		120,000AN5-12594622A22300000
    1 19/32"1/2"13/64"0.076"1/16"Partially ThreadedFine
    		120,000AN5-14594622A22400000
    2 3/32"1/2"13/64"0.076"1/16"Partially ThreadedFine
    		120,000AN5-20594622A22500000
     

    Ball-Nose Spring Plungers

    Image of Product. Front orientation. Spring Plungers. Ball-Nose Spring Plungers.
    Image of Attribute. Front orientation. Contains Annotated. Ball-Nose Spring Plungers.
    Align, position, and lock moving parts for most machining and assembly tasks. These spring plungers have a spring-loaded ball that compresses when a part presses against it, and then pops out into a notch or groove to hold the part in place. Unlike long-nose spring plungers, the ball rolls easily in and out of position, so they're a great fit for applications that require consistent, smooth movement, such as positioning parts in an assembly line and aligning fixtures and jigs when cutting or drilling.
    Spring plungers are available with or without a threadlocker. Those with a threadlocker won't wiggle loose from vibration. Spring plungers without a threadlocker are easier to remove.
    440C Stainless Steel Nose—The strongest, most wear-resistant stainless steel noses, these grind against hard metal surfaces without denting or scratching. However, they are not as corrosion resistant as 316 stainless steel.
    Nose
    Nose
    Force, lbf
    Body
    Drive
    Style
    Thread
    Size
    Extended
    Lg.
    Dia.
    Extended
    Compressed
    Material
    Lg.
    Front
    Back
    Each
    440C Stainless Steel Nose
    5/16"-24
    		0.04"0.156"61718-8 Stainless Steel
    		0.58"Spring Plunger Driver
    		Slotted
    		3408A641000000
    5/16"-24
    		0.04"0.156"617Steel0.58"Spring Plunger Driver
    		Slotted
    		3408A5410000
     

    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 Class 3B Unified Standard Thread Fit—The tightest fit for inch-sized threads. Unified Standard Class 3B fits completely flush in applications where parts need to stay in place, such as engines and suspension systems.
    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
    5/16"-24
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B2366A525000000
     
    Go/No-Go Gauges with Calibration Certificate Traceable to NIST
    5/16"-24
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B3157A33000000
     

    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 Class 3B Unified Standard Thread Fit—The tightest fit for inch-sized threads. Unified Standard Class 3B fits completely flush in applications where parts need to stay in place, such as engines and suspension systems.
    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
    5/16"-24
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N22000000
     
    Go Gauges with Accuracy Certificate Traceable to NIST
    5/16"-24
    		UNF
    		0" to 0.0003"Rockwell C70Chrome-Plated Tool SteelUnified Standard Class 2B, Unified Standard Class 3B
    		7968N11200000
     
    No-Go Gauges
    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
     
    No-Go Gauges with Accuracy Certificate Traceable to NIST
    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
     

    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 Class 3B Unified Standard Thread Fit—The tightest fit for inch-sized threads. Unified Standard Class 3B fits completely flush in applications where parts need to stay in place, such as engines and suspension systems.
    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
    5/16"-24
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7935N1030000000
     
    Plug Gauges with Calibration Certificate Traceable to NIST
    5/16"-24
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B, Unified Standard Class 3B7938N103000000
     

    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
    5/16"-24
    		UNF
    		-0.0003" to 0.0003"Rockwell C70Chrome-Plated Tool SteelDouble-Ended Taperlock HandleUnified Standard Class 2B
    		7941N2100000007941N380000000
     
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