Class Z Gauge Pins | McMaster-Carr

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138 Products

Class Z Plug Gauges

Also known as pin gauges, these Class Z plug gauges help you measure hole size and depth, check hole location and distance, and set micrometers. All come with a certificate of accuracy traceable to NIST that states they've passed a test for accuracy.

If a go gauge can enter the hole and a no-go gauge is unable to enter, the hole is within tolerance.

Go Gauges—Go gauges check the minimum hole diameter.

No-Go Gauges—No-go gauges check the maximum hole diameter.

							Go Gauges			No-Go Gauges
	Choose a Plug Gauge Size	Lg.	Surface Smoothness, RMS, μin	Hardness	Material	Specs. Met	Plug Gauge Size Tolerance		Each	Plug Gauge Size Tolerance		Each
Class Z Gauge



		0.0110" to 0.0605"	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0" to 0.0001"	000000000	00000	-0.0001" to 0"	000000000	00000


		0.0610" to 0.2405"	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0" to 0.0001"	00000000	0000	—	———	0
		0.0610" to 0.2500"	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	—	———	0	-0.0001" to 0"	000000000	0000
		0.2410" to 0.5005"	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0" to 0.0001"	00000000	0000	—	———	0
		0.2505" to 0.5005"	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	—	———	0	-0.0001" to 0"	000000000	0000
		0.5010" to 0.6255"	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0" to 0.0001"	000000000	0000	-0.0001" to 0"	000000000	0000
		0.6260" to 0.7505"	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0" to 0.0001"	000000000	00000	-0.0001" to 0"	000000000	00000
		0.7510" to 0.8325"	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0" to 0.0001"	000000000	00000	-0.0001" to 0"	000000000	00000
		0.8330" to 0.9165"	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0" to 0.0001"	000000000	00000	-0.0001" to 0"	000000000	00000
		0.9170" to 1.0005"	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0" to 0.0001"	000000000	00000	-0.0001" to 0"	000000000	00000
		0.22 mm to 1.51 mm	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0 mm to 0.0025 mm	000000	0000	-0.0025 mm to 0 mm	000000	00000


		1.52 mm to 12.71 mm	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0 mm to 0.0025 mm	000000	0000	-0.0025 mm to 0 mm	0000000	0000
		12.72 mm to 15.31 mm	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0 mm to 0.0025 mm	000000	0000	-0.0025 mm to 0 mm	0000000	0000
		15.32 mm to 17.81 mm	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0 mm to 0.0025 mm	000000	00000	-0.0025 mm to 0 mm	0000000	00000
		17.82 mm to 20.37 mm	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0 mm to 0.0025 mm	000000	00000	-0.0025 mm to 0 mm	0000000	00000
		20.38 mm to 22.05 mm	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0 mm to 0.0025 mm	000000	00000	-0.0025 mm to 0 mm	0000000	00000
		22.06 mm to 23.73 mm	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0 mm to 0.0025 mm	000000	00000	-0.0025 mm to 0 mm	0000000	00000
		23.74 mm to 25.41 mm	2"	8	Rockwell C60	Tool Steel	ASME B89.1.5	0 mm to 0.0025 mm	000000	00000	-0.0025 mm to 0 mm	0000000	00000

Plug Gauges with Handle

Take go and no-go measurements with the same tool. These gauges have a go gauge on one end, a no-go gauge on the other end, and a handle with bushings. They are used for precision go/no-go measuring of hole sizes and depths, checking hole location and distance, and setting micrometers. All come with an accuracy certificate traceable to NIST.

Check the minimum hole diameter with the go gauge end, and check the maximum hole diameter with the no-go gauge end. If the go gauge enters the hole and the no-go gauge is unable to enter, the hole is within tolerance.

	Plug Gauge Size		Plug Gauge Size Tolerance
	Go	No-Go	Go	No-Go	Lg.	Surface Smoothness, RMS, μin	Hardness	Material	Specs. Met	Features		Each
Class Z Gauge



		0.0050" to 0.0755"	0.0050" to 0.0755"	0" to 0.0001"	-0.0001" to 0"	5 1/4"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	000000000	000000


		0.0760" to 0.1805"	0.0760" to 0.1805"	0" to 0.0001"	-0.0001" to 0"	5 15/32"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	000000000	00000
		0.1810" to 0.2815"	0.1810" to 0.2815"	0" to 0.0001"	-0.0001" to 0"	6 1/8"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	000000000	00000
		0.2820" to 0.4065"	0.2820" to 0.4065"	0" to 0.0001"	-0.0001" to 0"	6 19/32"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	000000000	00000
		0.4070" to 0.5105"	0.4070" to 0.5105"	0" to 0.0001"	-0.0001" to 0"	7 3/16"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	000000000	00000
		0.5110" to 0.6355"	0.5110" to 0.6355"	0" to 0.0001"	-0.0001" to 0"	7 3/16"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	00000000	00000
		0.6360" to 0.7605"	0.6360" to 0.7605"	0" to 0.0001"	-0.0001" to 0"	7 17/32"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	00000000	00000
		0.7610" to 1.0150"	0.7610" to 1.0150"	0" to 0.0001"	-0.0001" to 0"	7 17/32"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	00000000	00000
		0.2200 mm to 1.9100 mm	0.2200 mm to 1.9100 mm	0 mm to 0.0025 mm	-0.0025 mm to 0 mm	5 1/4"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	00000000	00000
		1.9200 mm to 4.5700 mm	1.9200 mm to 4.5700 mm	0 mm to 0.0025 mm	-0.0025 mm to 0 mm	5 15/32"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	000000000	00000
		4.5800 mm to 7.1400 mm	4.5800 mm to 7.1400 mm	0 mm to 0.0025 mm	-0.0025 mm to 0 mm	6 1/8"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	00000000	00000


		7.1500 mm to 10.3100 mm	7.1500 mm to 10.3100 mm	0 mm to 0.0025 mm	-0.0025 mm to 0 mm	6 19/32"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	00000000	00000
		10.3200 mm to 12.9500 mm	10.3200 mm to 12.9500 mm	0 mm to 0.0025 mm	-0.0025 mm to 0 mm	7 3/16"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	00000000	00000
		12.9600 mm to 16.1300 mm	12.9600 mm to 16.1300 mm	0 mm to 0.0025 mm	-0.0025 mm to 0 mm	7 17/32"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	00000000	00000
		16.1400 mm to 19.3000 mm	16.1400 mm to 19.3000 mm	0 mm to 0.0025 mm	-0.0025 mm to 0 mm	7 17/32"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	00000000	00000
		19.3100 mm to 25.6500 mm	19.3100 mm to 25.6500 mm	0 mm to 0.0025 mm	-0.0025 mm to 0 mm	7 21/32"	8	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	00000000	000000

Plug Gauge Sets

Keep dozens of plug gauges on hand to check a range of hole sizes. You’ll often hear them called pin gauges. Use them to measure hole size and depth with precise go/no-go tests, check hole location and distance, and set micrometers. Sets include a manufacturer's certificate of accuracy to certify diameters are within tolerance. Gauges are tool steel, so they’re strong, hard, and resist wear.

If a go gauge can enter the hole and a no-go gauge is unable to enter, the hole is within tolerance.

Choose a class based on the level of precision you need—the smaller the tolerance, the greater the accuracy. Classes are based on ASME standard B89.1.5, which states diameter won’t vary more than the listed plug gauge tolerance.

Case

Go Gauges—Go gauges check the minimum hole diameter.

No-Go Gauges—No-go gauges check the maximum hole diameter.

Class Z Gauge—Class Z gauges are the most common. You'll often find them used on shop floors.

	Plug Gauge Size	Increment	No. of Pieces	Lg.	Surface Smoothness, RMS, μin	Material	Plug Gauge Size Tolerance	Specs. Met		Each
Go Gauges







				Class Z Gauge

				0.0110" to 0.0600"	0.001"	50	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	0000000


				0.0110" to 0.2500"	0.001"	240	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	000000
				0.0115" to 0.0605"	0.001"	50	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	000000
				0.0115" to 0.2505"	0.001"	240	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	000000
				0.0610" to 0.2500"	0.001"	190	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	000000
				0.0615" to 0.2505"	0.001"	190	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	000000
				0.2510" to 0.5000"	0.001"	250	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	000000
				0.2515" to 0.5005"	0.001"	250	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	000000
				0.5010" to 0.6250"	0.001"	125	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	000000
				0.5015" to 0.6255"	0.001"	125	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	000000
				0.6260" to 0.7500"	0.001"	125	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	000000


				0.6265" to 0.7505"	0.001"	125	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	000000
				0.7510" to 0.8320"	0.001"	82	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	000000
				0.7515" to 0.8325"	0.001"	82	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	000000
				0.8330" to 0.9160"	0.001"	84	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	00000000
				0.8335" to 0.9165"	0.001"	84	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	00000000
				0.9170" to 1.0000"	0.001"	84	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	00000000
				0.9175" to 1.0005"	0.001"	84	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	00000000
				0.2200 mm to 1.5000 mm	0.02 mm	65	2"	8	Tool Steel	0 mm to 0.0025 mm	ASME B89.1.5	0000000	000000
				0.2300 mm to 1.5100 mm	0.02 mm	65	2"	8	Tool Steel	0 mm to 0.0025 mm	ASME B89.1.5	00000000	000000
				1.5200 mm to 7.7000 mm	0.02 mm	310	2"	8	Tool Steel	0 mm to 0.0025 mm	ASME B89.1.5	00000000	000000


				1.5300 mm to 7.7100 mm	0.02 mm	310	2"	8	Tool Steel	0 mm to 0.0025 mm	ASME B89.1.5	00000000	000000
				7.7200 mm to 12.7000 mm	0.02 mm	250	2"	8	Tool Steel	0 mm to 0.0025 mm	ASME B89.1.5	00000000	000000
				7.7300 mm to 12.7100 mm	0.02 mm	250	2"	8	Tool Steel	0 mm to 0.0025 mm	ASME B89.1.5	00000000	000000
				12.7200 mm to 15.3000 mm	0.02 mm	130	2"	8	Tool Steel	0 mm to 0.0025 mm	ASME B89.1.5	00000000	000000
				12.7300 mm to 15.3100 mm	0.02 mm	130	2"	8	Tool Steel	0 mm to 0.0025 mm	ASME B89.1.5	00000000	000000
				15.3200 mm to 17.8000 mm	0.02 mm	125	2"	8	Tool Steel	0 mm to 0.0025 mm	ASME B89.1.5	00000000	000000
				15.3300 mm to 17.8100 mm	0.02 mm	125	2"	8	Tool Steel	0 mm to 0.0025 mm	ASME B89.1.5	00000000	000000
				17.8200 mm to 20.3600 mm	0.02 mm	128	2"	8	Tool Steel	0 mm to 0.0025 mm	ASME B89.1.5	00000000	000000
				17.8300 mm to 20.3700 mm	0.02 mm	128	2"	8	Tool Steel	0 mm to 0.0025 mm	ASME B89.1.5	00000000	000000


				No-Go Gauges







								Class Z Gauge

								0.0110" to 0.0600"	0.001"	50	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	000000


								0.0110" to 0.2500"	0.001"	240	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	000000
								0.0115" to 0.0605"	0.001"	50	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	000000
								0.0115" to 0.2505"	0.001"	240	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	000000
								0.0610" to 0.2500"	0.001"	190	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	000000
0.0615" to 0.2505"								0.001"	190	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	000000
0.2510" to 0.5000"	0.001"							250	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	000000
0.2515" to 0.5005"	0.001"							250	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	000000
0.5010" to 0.6250"	0.001"							125	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	000000
0.5015" to 0.6255"	0.001"							125	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	000000
0.6260" to 0.7500"	0.001"	125						2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	000000


0.6265" to 0.7505"	0.001"	125	2"					8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	000000
0.7510" to 0.8320"	0.001"	82	2"					8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	000000
0.7515" to 0.8325"	0.001"	82	2"					8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	000000
0.8330" to 0.9160"	0.001"	84	2"					8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	00000000
0.8335" to 0.9165"	0.001"	84	2"					8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	00000000
0.9170" to 1.0000"	0.001"	84	2"					8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	00000000
0.9175" to 1.0005"	0.001"	84	2"					8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	00000000
0.2200 mm to 1.5000 mm	0.02 mm	65	2"					8	Tool Steel	-0.0025 mm to 0 mm	ASME B89.1.5	0000000	000000
0.2300 mm to 1.5100 mm	0.02 mm	65	2"					8	Tool Steel	-0.0025 mm to 0 mm	ASME B89.1.5	00000000	000000
1.5200 mm to 7.7000 mm	0.02 mm	310	2"					8	Tool Steel	-0.0025 mm to 0 mm	ASME B89.1.5	00000000	000000


1.5300 mm to 7.7100 mm	0.02 mm	310	2"					8	Tool Steel	-0.0025 mm to 0 mm	ASME B89.1.5	00000000	000000
7.7200 mm to 12.7000 mm	0.02 mm	250	2"					8	Tool Steel	-0.0025 mm to 0 mm	ASME B89.1.5	00000000	000000
7.7300 mm to 12.7100 mm	0.02 mm	250	2"					8	Tool Steel	-0.0025 mm to 0 mm	ASME B89.1.5	00000000	000000
12.7200 mm to 15.3000 mm	0.02 mm	130	2"					8	Tool Steel	-0.0025 mm to 0 mm	ASME B89.1.5	00000000	000000
12.7300 mm to 15.3100 mm	0.02 mm	130	2"					8	Tool Steel	-0.0025 mm to 0 mm	ASME B89.1.5	00000000	000000
15.3200 mm to 17.8000 mm	0.02 mm	125	2"					8	Tool Steel	-0.0025 mm to 0 mm	ASME B89.1.5	00000000	000000
15.3300 mm to 17.8100 mm	0.02 mm	125	2"					8	Tool Steel	-0.0025 mm to 0 mm	ASME B89.1.5	00000000	000000
17.8200 mm to 20.3600 mm	0.02 mm	128	2"					8	Tool Steel	-0.0025 mm to 0 mm	ASME B89.1.5	00000000	000000
17.8300 mm to 20.3700 mm	0.02 mm	128	2"					8	Tool Steel	-0.0025 mm to 0 mm	ASME B89.1.5	00000000	000000

Cabinet

Go Gauges—Go gauges check the minimum hole diameter.

No-Go Gauges—No-go gauges check the maximum hole diameter.

Class Z Gauge—Class Z gauges are the most common. You'll often find them used on shop floors.

	Lg.	Surface Smoothness, RMS, μin	Material	Plug Gauge Size Tolerance	Specs. Met		Each
Go Gauges







	Class Z Gauge

	0.0110" to 0.5005"	0.0005"	980	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	0000000	000000000


	0.0110" to 0.6250"	0.001"	615	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	00000000	00000000
	0.0110" to 0.7500"	0.001"	740	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	00000000	00000000
	0.0110" to 1.0000"	0.001"	990	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	00000000	00000000
	0.0115" to 0.7505"	0.001"	740	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	00000000	00000000
	0.0115" to 1.0005"	0.001"	990	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	00000000	00000000
	0.0610" to 0.5005"	0.0005"	880	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	00000000	00000000
	0.0610" to 0.7500"	0.001"	690	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	00000000	00000000
	0.0610" to 1.0000"	0.001"	940	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	00000000	00000000
	0.0615" to 0.7505"	0.001"	690	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	00000000	00000000
	0.0615" to 1.0005"	0.001"	940	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	00000000	00000000


	0.7510" to 1.0000"	0.001"	250	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	00000000	00000000
	0.7515" to 1.0005"	0.001"	250	2"	8	Tool Steel	0" to 0.0001"	ASME B89.1.5	00000000	00000000
	1.5200 mm to 17.8000 mm	0.02 mm	815	2"	8	Tool Steel	0 mm to 0.0025 mm	ASME B89.1.5	00000000	00000000
	1.5300 mm to 17.8100 mm	0.02 mm	815	2"	8	Tool Steel	0 mm to 0.0025 mm	ASME B89.1.5	00000000	00000000


	No-Go Gauges







					Class Z Gauge

					0.0110" to 0.5005"	0.0005"	980	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	0000000	00000000


					0.0110" to 0.6250"	0.001"	615	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	00000000	00000000
					0.0110" to 0.7500"	0.001"	740	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	00000000	00000000
					0.0110" to 1.0000"	0.001"	990	2"	8	Tool Steel	-0.00012" to 0"	ASME B89.1.5	00000000	00000000
					0.0115" to 0.7505"	0.001"	740	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	00000000	00000000
					0.0115" to 1.0005"	0.001"	990	2"	8	Tool Steel	-0.00012" to 0"	ASME B89.1.5	00000000	00000000
					0.0610" to 0.5005"	0.0005"	880	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	00000000	00000000
					0.0610" to 0.7500"	0.001"	690	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	00000000	00000000
					0.0610" to 1.0000"	0.001"	940	2"	8	Tool Steel	-0.00012" to 0"	ASME B89.1.5	00000000	00000000
					0.0615" to 0.7505"	0.001"	690	2"	8	Tool Steel	-0.0001" to 0"	ASME B89.1.5	00000000	00000000
					0.0615" to 1.0005"	0.001"	940	2"	8	Tool Steel	-0.00012" to 0"	ASME B89.1.5	00000000	00000000


					0.7510" to 1.0000"	0.001"	250	2"	8	Tool Steel	-0.00012" to 0"	ASME B89.1.5	00000000	00000000
					0.7515" to 1.0005"	0.001"	250	2"	8	Tool Steel	-0.00012" to 0"	ASME B89.1.5	00000000	00000000
					1.5200 mm to 17.8000 mm	0.02 mm	815	2"	8	Tool Steel	-0.00254 mm to 0 mm	ASME B89.1.5	00000000	00000000
					1.5300 mm to 17.8100 mm	0.02 mm	815	2"	8	Tool Steel	-0.00254 mm to 0 mm	ASME B89.1.5	00000000	00000000