3/4"-16 Pins | McMaster-Carr

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3/4"

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0.858"

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26 Products

Thread-In Quick-Release Pin Receptacles

Use a screwdriver to install these receptacles in a threaded hole. Use them to secure quick-release pins when you can't drill a through hole. They're made of 18-8 stainless steel for a balance of strength and corrosion resistance, and passivated for added protection against corrosion and oxidation.

	Barrel OD	Overall Lg.	Usable Lg. Reduction	Thread Size	Material	Passivation		Each
Round Mounting Flange



	1/2"	3/4"	13/16"	1/4"	3/4"-16	18-8 Stainless Steel	Passivated	94715A265	000000

Threaded Locating Pins


Round Head	Diamond Head

Screw the shank into a threaded hole for quick installation and removal. Mate these pins with holes in workpieces for precise alignment.

Diamond Head—Diamond-head pins make less contact with the inside of a hole than round-head pins to reduce sticking and jamming.

	Head		Thread						Round Head		Diamond Head
	Dia. (A)	Ht. (B)	Size	Lg.	Shoulder Ht.	Overall Ht.	Head Dia. Tolerance	Hardness		Each		Each
Steel



		3/4"	1"	3/4"-16	23/32"	1/4"	2 31/32"	-0.0015" to -0.001"	Rockwell C60 to Rockwell C64	1529N42	000000	1529N45	000000


		1"	1"	3/4"-16	23/32"	1/4"	2 31/32"	-0.0015" to -0.001"	Rockwell C60 to Rockwell C64	1529N43	00000	1529N46	00000

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

Length for inch pins measures the unthreaded length of the pin.

12L14 Carbon Steel—12L14 Carbon steel pins have good strength.

ASME B18.8.2—Pins that meet ASME B18.8.2 specifications conform to ASME standards for material and dimensions.

Breaking Strength—Breaking strength is measured as single shear, which is the force required to break the pin into two pieces.

	Thread Lg.	Thread Size	Min. Hardness	Breaking Strength	Specs. Met	Pkg. Qty.		Pkg.
12L14 Carbon Steel







	11 Taper Pin—0.858" Large End Diameter

	4"	0.775"	1:48	1 1/8"	3/4"-16	Not Rated	Not Rated	ASME B18.8.2	1	92281A101	000000


	5"	0.754"	1:48	1 1/8"	3/4"-16	Not Rated	Not Rated	ASME B18.8.2	1	92281A102	000000
	6"	0.733"	1:48	1 1/8"	3/4"-16	Not Rated	Not Rated	ASME B18.8.2	1	92281A103	00000
	8"	0.691"	1:48	1 1/8"	3/4"-16	Not Rated	Not Rated	ASME B18.8.2	1	92281A104	000000
	10"	0.65"	1:48	1 1/8"	3/4"-16	Not Rated	Not Rated	ASME B18.8.2	1	92281A105	00000

Hitch Balls

Mount these onto a hitch insert, and connect them to a trailer with a hitch-ball coupler. Maximum trailer weight is the total weight being towed.

	Hitch Ball Dia.	Thread Size	Stud Lg.		Each
Chrome-Plated Steel Hitch Balls



	2,000	1 7/8"	3/4"-16	1 5/8"	8785T41	000000


	3,500	2"	3/4"-16	1 7/8"	8785T42	00000
	3,500	2"	3/4"-16	2 5/16"	8785T21	00000


	Stainless Steel Hitch Balls



			2,000	1 7/8"	3/4"-16	1 3/4"	8785T94	00000

Hydraulic Cylinder Clevis Rod Ends


Clevis Rod Ends

Connect a clevis rod end to a hydraulic cylinder to create a bend or pivot. Use these with pivot brackets and clevis pins (each component sold separately). They’re also known as yoke-end linkages.

Stainless Steel—Stainless steel clevis rod ends are more corrosion resistant than steel clevis rod ends in wet environments.

					Overall			Shank
	For Bore Dia.	For Pin Dia.	Jaw Opening Wd.	Shank Ctr. Lg.	Wd.	Lg.	Ht.	Thread Size	Gender	Threading	For Hydraulic Cylinder Mounting Pattern		Each
Steel



		2", 2 1/2"	3/4"	1 1/4"	2 3/8"	2 1/2"	3 1/8"	1 1/2"	3/4"-16	Female	Fully Threaded	NFPA Light Duty, NFPA/JIC Heavy Duty	62205K29	000000


		Stainless Steel



				—	3/4"	1 1/4"	2 3/8"	2 1/2"	3 1/8"	1 1/2"	3/4"-16	Female	Fully Threaded	NFPA Light Duty, NFPA/JIC Heavy Duty	6043N12	000000

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

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 Type	Pitch Dia. Tolerance	Hardness	Material	Features	Choose a Thread Fit		Each
Plug Gauges with Accuracy Certificate Traceable to NIST



	3/4"-16	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	7935N108	0000000


	Plug Gauges with Calibration Certificate Traceable to NIST



			3/4"-16	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	7938N108	000000

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

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 Type	Pitch Dia. Tolerance	Hardness	Material	For Thread Fit		Each
Go Gauges



	3/4"-16	UNF	0" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Unified Standard Class 2B, Unified Standard Class 3B	7968N33	000000


	Go Gauges with Accuracy Certificate Traceable to NIST



			3/4"-16	UNF	0" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Unified Standard Class 2B, Unified Standard Class 3B	7968N123	00000


			No-Go Gauges



					3/4"-16	UNF	-0.0003" to 0"	Rockwell C70	Chrome-Plated Tool Steel	Unified Standard Class 2B	7968N76	00000


					3/4"-16	UNF	-0.0003" to 0"	Rockwell C70	Chrome-Plated Tool Steel	Unified Standard Class 3B	7968N77	00000


					No-Go Gauges with Accuracy Certificate Traceable to NIST



							3/4"-16	UNF	-0.0003" to 0"	Rockwell C70	Chrome-Plated Tool Steel	Unified Standard Class 2B	7968N166	00000


							3/4"-16	UNF	-0.0003" to 0"	Rockwell C70	Chrome-Plated Tool Steel	Unified Standard Class 3B	7968N167	00000

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

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 Type	Pitch Dia. Tolerance	Hardness	Material	Features	Choose a Thread Fit		Each
Go/No-Go Gauges



	3/4"-16	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	2366A536	0000000


	Go/No-Go Gauges with Calibration Certificate Traceable to NIST



			3/4"-16	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A45	000000