Class ZZ Plug Gauges | McMaster-Carr

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System of Measurement

Plug Gauge Size

Size-Checking Gauge Class

Gauge Measurement Type

No-Go

Finish

Black Oxide

Length

Certificate Type

Accuracy Certificate Traceable to NIST

Increment

Material

Surface Smoothness, RMS

10 μin

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Specifications Met

REACH

Hardness

RoHS

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Performance

Number of Pieces

Container Type

82 Products

Wear-Indicating Plug Gauges

A black-oxide treatment on these gauges shows wear patterns so you can tell when you need to calibrate or replace the gauge. They help you measure hole sizes and depths, check hole location and distance, and set micrometers. All come with an accuracy certificate 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 ZZ Gauge



		0.0110" to 0.0605"	2"	10	Rockwell C60	Black-Oxide Tool Steel	ASME B89.1.5	0" to 0.0002"	2320A001	00000	-0.0002" to 0"	2321A001	00000


		0.0610" to 0.5005"	2"	10	Rockwell C60	Black-Oxide Tool Steel	ASME B89.1.5	0" to 0.0002"	2320A002	0000	-0.0002" to 0"	2321A002	0000
		0.5010" to 0.6255"	2"	10	Rockwell C60	Black-Oxide Tool Steel	ASME B89.1.5	0" to 0.0002"	2320A003	0000	-0.0002" to 0"	2321A003	0000
		0.6260" to 0.7505"	2"	10	Rockwell C60	Black-Oxide Tool Steel	ASME B89.1.5	0" to 0.0002"	2320A004	0000	-0.0002" to 0"	2321A004	0000

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 ZZ Gauge—Class ZZ gauges are ideal for quick checks that don't require extreme precision.

Black-Oxide Tool Steel—Black-oxide tool steel gauges show wear patterns, so you know when to calibrate or replace them.

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







				Class ZZ Gauge

				0.0060" to 0.0600"	0.001"	55	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2326A111	0000000


				0.0065" to 0.0605"	0.001"	55	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2326A112	000000
				0.0110" to 0.0600"	0.001"	50	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2327A11	00000
				0.0110" to 0.2500"	0.001"	240	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2326A114	000000
				0.0115" to 0.0605"	0.001"	50	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2326A113	00000
				0.0115" to 0.2505"	0.001"	240	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2326A115	000000
				0.0610" to 0.2500"	0.001"	190	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2327A12	000000
				0.0615" to 0.2505"	0.001"	190	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2326A116	000000
				0.2510" to 0.5000"	0.001"	250	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2327A13	000000
				0.2515" to 0.5005"	0.001"	250	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2326A117	000000
				0.5010" to 0.6250"	0.001"	125	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2327A14	000000


				0.5015" to 0.6255"	0.001"	125	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2326A118	000000
				0.6260" to 0.7500"	0.001"	125	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2327A15	000000
				0.6265" to 0.7505"	0.001"	125	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2326A119	000000
				0.7510" to 0.8320"	0.001"	82	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2326A121	000000
				0.7515" to 0.8325"	0.001"	82	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2326A122	000000
				0.8330" to 0.9160"	0.001"	84	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2326A123	000000
				0.8335" to 0.9165"	0.001"	84	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2326A124	000000
				0.9170" to 1.0000"	0.001"	84	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2326A125	000000
				0.9175" to 1.0005"	0.001"	84	2"	10	Black-Oxide Tool Steel	0" to 0.0002"	ASME B89.1.5	2326A126	000000
				0.2000 mm to 1.2800 mm	0.02 mm	55	2"	10	Black-Oxide Tool Steel	0 mm to 0.005 mm	ASME B89.1.5	2326A311	000000


				0.2100 mm to 1.2900 mm	0.02 mm	55	2"	10	Black-Oxide Tool Steel	0 mm to 0.005 mm	ASME B89.1.5	2326A312	000000
				1.3000 mm to 4.9800 mm	0.02 mm	185	2"	10	Black-Oxide Tool Steel	0 mm to 0.005 mm	ASME B89.1.5	2326A313	000000
				1.3000 mm to 4.9800 mm	0.02 mm	185	2"	10	Tool Steel	0 mm to 0.005 mm	ASME B89.1.5	2326A69	000000
				1.3100 mm to 4.9900 mm	0.02 mm	185	2"	10	Black-Oxide Tool Steel	0 mm to 0.005 mm	ASME B89.1.5	2326A314	000000
				5.0000 mm to 9.9800 mm	0.02 mm	250	2"	10	Black-Oxide Tool Steel	0 mm to 0.005 mm	ASME B89.1.5	2326A315	000000
				5.0000 mm to 9.9800 mm	0.02 mm	250	2"	10	Tool Steel	0 mm to 0.005 mm	ASME B89.1.5	2326A71	000000
				5.0100 mm to 9.9900 mm	0.02 mm	250	2"	10	Black-Oxide Tool Steel	0 mm to 0.005 mm	ASME B89.1.5	2326A316	000000
				10.0000 mm to 13.9800 mm	0.02 mm	200	2"	10	Black-Oxide Tool Steel	0 mm to 0.005 mm	ASME B89.1.5	2326A317	000000
				10.0000 mm to 13.9800 mm	0.02 mm	200	2"	10	Tool Steel	0 mm to 0.005 mm	ASME B89.1.5	2326A72	000000
				10.0100 mm to 13.9900 mm	0.02 mm	200	2"	10	Black-Oxide Tool Steel	0 mm to 0.005 mm	ASME B89.1.5	2326A318	000000


				14.0000 mm to 16.4800 mm	0.02 mm	125	2"	10	Black-Oxide Tool Steel	0 mm to 0.005 mm	ASME B89.1.5	2326A319	000000
				14.0100 mm to 16.4900 mm	0.02 mm	125	2"	10	Black-Oxide Tool Steel	0 mm to 0.005 mm	ASME B89.1.5	2326A321	000000
				16.5000 mm to 18.9800 mm	0.02 mm	125	2"	10	Black-Oxide Tool Steel	0 mm to 0.005 mm	ASME B89.1.5	2326A322	000000
				16.5100 mm to 18.9900 mm	0.02 mm	125	2"	10	Black-Oxide Tool Steel	0 mm to 0.005 mm	ASME B89.1.5	2326A323	000000
				19.0000 mm to 20.9800 mm	0.02 mm	100	2"	10	Black-Oxide Tool Steel	0 mm to 0.0061 mm	ASME B89.1.5	2326A324	000000
				19.0100 mm to 20.9900 mm	0.02 mm	100	2"	10	Black-Oxide Tool Steel	0 mm to 0.0061 mm	ASME B89.1.5	2326A325	000000


				No-Go Gauges







Class ZZ Gauge

0.0060" to 0.0600"	0.001"							55	2"	10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2326A211	000000


0.0065" to 0.0605"	0.001"							55	2"	10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2326A212	000000
0.0110" to 0.0600"	0.001"	50						2"	10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2327A21	00000
0.0110" to 0.2500"	0.001"	240	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2326A214	000000
0.0115" to 0.0605"	0.001"	50	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2326A213	00000
0.0115" to 0.2505"	0.001"	240	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2326A215	000000
0.0610" to 0.2500"	0.001"	190	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2327A22	000000
0.0615" to 0.2505"	0.001"	190	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2326A216	000000
0.2510" to 0.5000"	0.001"	250	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2327A23	000000
0.2515" to 0.5005"	0.001"	250	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2326A217	000000
0.5010" to 0.6250"	0.001"	125	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2327A24	000000


0.5015" to 0.6255"	0.001"	125	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2326A218	000000
0.6260" to 0.7500"	0.001"	125	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2327A25	000000
0.6265" to 0.7505"	0.001"	125	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2326A219	000000
0.7510" to 0.8320"	0.001"	82	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2326A221	000000
0.7515" to 0.8325"	0.001"	82	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2326A222	000000
0.8330" to 0.9160"	0.001"	84	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2326A223	000000
0.8335" to 0.9165"	0.001"	84	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2326A224	000000
0.9170" to 1.0000"	0.001"	84	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2326A225	000000
0.9175" to 1.0005"	0.001"	84	2"					10	Black-Oxide Tool Steel	-0.0002" to 0"	ASME B89.1.5	2326A226	000000
0.2000 mm to 1.2800 mm	0.02 mm	55	2"					10	Black-Oxide Tool Steel	-0.005 mm to 0 mm	ASME B89.1.5	2326A411	000000


0.2100 mm to 1.2900 mm	0.02 mm	55	2"					10	Black-Oxide Tool Steel	-0.005 mm to 0 mm	ASME B89.1.5	2326A412	000000
1.3000 mm to 4.9800 mm	0.02 mm	185	2"					10	Black-Oxide Tool Steel	-0.005 mm to 0 mm	ASME B89.1.5	2326A413	000000
1.3000 mm to 4.9800 mm	0.02 mm	185	2"					10	Tool Steel	-0.005 mm to 0 mm	ASME B89.1.5	2326A73	000000
1.3100 mm to 4.9900 mm	0.02 mm	185	2"					10	Black-Oxide Tool Steel	-0.005 mm to 0 mm	ASME B89.1.5	2326A414	000000
5.0000 mm to 9.9800 mm	0.02 mm	250	2"					10	Black-Oxide Tool Steel	-0.005 mm to 0 mm	ASME B89.1.5	2326A415	000000
5.0000 mm to 9.9800 mm	0.02 mm	250	2"					10	Tool Steel	-0.005 mm to 0 mm	ASME B89.1.5	2326A74	000000
5.0100 mm to 9.9900 mm	0.02 mm	250	2"					10	Black-Oxide Tool Steel	-0.005 mm to 0 mm	ASME B89.1.5	2326A416	000000
10.0000 mm to 13.9800 mm	0.02 mm	200	2"					10	Black-Oxide Tool Steel	-0.005 mm to 0 mm	ASME B89.1.5	2326A417	000000
10.0000 mm to 13.9800 mm	0.02 mm	200	2"					10	Tool Steel	-0.005 mm to 0 mm	ASME B89.1.5	2326A75	000000
10.0100 mm to 13.9900 mm	0.02 mm	200	2"					10	Black-Oxide Tool Steel	-0.005 mm to 0 mm	ASME B89.1.5	2326A418	000000


14.0000 mm to 16.4800 mm	0.02 mm	125	2"					10	Black-Oxide Tool Steel	-0.005 mm to 0 mm	ASME B89.1.5	2326A419	000000
14.0100 mm to 16.4900 mm	0.02 mm	125	2"					10	Black-Oxide Tool Steel	-0.005 mm to 0 mm	ASME B89.1.5	2326A421	000000
16.5000 mm to 18.9800 mm	0.02 mm	125	2"					10	Black-Oxide Tool Steel	-0.005 mm to 0 mm	ASME B89.1.5	2326A422	000000
16.5100 mm to 18.9900 mm	0.02 mm	125	2"					10	Black-Oxide Tool Steel	-0.005 mm to 0 mm	ASME B89.1.5	2326A423	000000
19.0000 mm to 20.9800 mm	0.02 mm	100	2"					10	Black-Oxide Tool Steel	-0.0061 mm to 0 mm	ASME B89.1.5	2326A424	000000
19.0100 mm to 20.9900 mm	0.02 mm	100	2"					10	Black-Oxide Tool Steel	-0.0061 mm to 0 mm	ASME B89.1.5	2326A425	000000