M7 Pins | McMaster-Carr

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2 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

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, mm	Hardness	Material	Features	For Thread Fit		Each
Go/No-Go Gauges with Accuracy Certificate Traceable to NIST



	M7 × 1 mm	Metric	-0.008 to 0.008	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	23585A211	0000000


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



			M7 × 1 mm	Metric	-0.008 to 0.008	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A122	000000