M18 Pins | McMaster-Carr

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10 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, mm	Overall Lg., mm	Usable Lg. Reduction, mm	Thread Size	Material	Passivation		Each
Round Mounting Flange



	10	18	18	5	M18 × 2.5 mm	18-8 Stainless Steel	Passivated	94715A305	000000

Threaded Spring Locating Pins

Threading makes these guide pins easier to remove and replace than press fit, so they're useful for high-wear applications. A sealed top prevents debris from getting inside and making them seize up. As the workpiece pushes against the pin head in one direction, the internal spring pushes back to hold it in place for clamping.

	Pins												Installation Tools
		Body, mm		Head, mm
	Thread Size	Dia.	Lg.	Dia.	Lg.	Max. Head Movement, mm	Min. Spring Force	Max. Spring Force, lbf	Body Dia. Tolerance, mm	Body Material		Each		Each
Zinc-Plated Steel Head



		M18 × 1.5 mm	16	18	10	16	1.6	Not Rated	33	-0.15 to 0.15	Steel	3077N15	00000	8485A94	000000


		M18 × 1.5 mm	16	18	10	16	1.6	Not Rated	45	-0.15 to 0.15	Steel	3077N16	0000	8485A94	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

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 Metric Class 6H Thread Fit—These metric-threaded gauges are class 6H, which is comparable to the fit of those with Class 2B Unified Standard.

For Thread Fit—Thread fit designates the tightness or looseness of mating threads.

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



	M18 × 1.5 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	23585A149	0000000


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



			M18 × 1 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	23585A228	000000


			M18 × 2.5 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	23585A227	000000


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



					M18 × 1 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A216	000000


					M18 × 1.5 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A135	000000
					M18 × 2.5 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A215	000000