Threaded Plug Gauges With Calibration Certificate

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Accuracy Certificate Traceable to NIST

Calibration Certificate Traceable to NIST

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Unified Standard Class 2B

Unified Standard Class 3B

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Gauge Measurement Type

Pipe Size

REACH

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229 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

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 Class 3B Unified Standard Thread Fit—The tightest fit for inch-sized threads. Unified Standard Class 3B fits completely flush in applications where parts need to stay in place, such as engines and suspension systems.

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 Size	Thread Type	Pitch Dia. Tolerance	Hardness	Material	Features	Choose a Thread Fit		Each
Go/No-Go Gauges with Calibration Certificate Traceable to NIST



		0-80	UNF	-0.0002" to 0.0002"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A11	0000000


		1-64	UNC	-0.0002" to 0.0002"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A12	000000
		1-72	UNF	-0.0002" to 0.0002"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A13	000000
		2-56	UNC	-0.0002" to 0.0002"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A14	000000
		2-64	UNF	-0.0002" to 0.0002"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A15	000000
		3-48	UNC	-0.0002" to 0.0002"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A16	000000
		3-56	UNF	-0.0002" to 0.0002"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A61	000000
		4-40	UNC	-0.0002" to 0.0002"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A17	000000
		4-48	UNF	-0.0002" to 0.0002"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A18	000000
		5-40	UNC	-0.0002" to 0.0002"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A19	000000
		5-44	UNF	-0.0002" to 0.0002"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A62	000000


		6-32	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A21	000000
		6-40	UNF	-0.0002" to 0.0002"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A22	000000
		8-32	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A23	000000
		8-36	UNF	-0.0002" to 0.0002"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A24	000000
		10-24	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A25	000000
		10-32	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A26	000000
		12-24	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A27	000000
		12-28	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A28	000000
		12-32	UNEF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A63	000000
		1/4"-20	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A29	000000


		1/4"-28	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A31	000000
		1/4"-32	UNEF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A64	000000
		5/16"-18	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A32	000000
		5/16"-24	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A33	000000
		5/16"-32	UNEF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A65	000000
		3/8"-16	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A34	000000
		3/8"-24	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A35	000000
		3/8"-32	UNEF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A66	000000
		7/16"-14	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A36	000000
		7/16"-20	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A37	000000


		7/16"-28	UNEF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A67	000000
		1/2"-13	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A38	000000
		1/2"-20	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A39	000000
		1/2"-28	UNEF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A68	000000
		9/16"-12	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	3157A336	000000
		9/16"-18	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A41	000000
		9/16"-24	UNEF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A69	000000
		5/8"-11	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A42	000000
		5/8"-18	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A43	000000
		5/8"-24	UNEF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A71	000000


		11/16"-24	UNEF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A72	000000
		3/4"-10	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A44	000000
		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
		3/4"-20	UNEF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A73	000000
		7/8"-9	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A46	000000
		7/8"-14	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A47	000000
		7/8"-20	UNEF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A74	000000
		1"-8	UNC	-0.0004" to 0.0004"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A48	000000
		1"-12	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A49	000000
		1"-14	UNS	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A75	000000

1"-20	UNEF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A76	000000
1 1/8"-7	UNC	-0.0004" to 0.0004"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	3157A337	000000
1 1/8"-12	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A51	000000
1 1/4"-7	UNC	-0.0004" to 0.0004"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A52	000000
1 1/4"-12	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A53	000000
1 3/8"-6	UNC	-0.0004" to 0.0004"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	3157A338	000000
1 3/8"-12	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A77	000000
1 1/2"-6	UNC	-0.0004" to 0.0004"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A54	000000
1 1/2"-12	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	3157A55	000000
M1.6 × 0.35 mm	Metric	-0.005 mm to 0.005 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A111	000000
M2 × 0.4 mm	Metric	-0.005 mm to 0.005 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A113	000000
M2.2 × 0.45 mm	Metric	-0.005 mm to 0.005 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A201	000000
M2.5 × 0.45 mm	Metric	-0.005 mm to 0.005 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A114	000000
M3 × 0.5 mm	Metric	-0.005 mm to 0.005 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A115	000000
M3.5 × 0.6 mm	Metric	-0.005 mm to 0.005 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A116	000000
M4 × 0.7 mm	Metric	-0.005 mm to 0.005 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A117	000000
M4.5 × 0.75 mm	Metric	-0.005 mm to 0.005 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A202	000000
M5 × 0.5 mm	Metric	-0.005 mm to 0.005 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A203	000000
M5 × 0.8 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A119	000000
M6 × 0.75 mm	Metric	-0.005 mm to 0.005 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A204	000000
M6 × 1 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A121	000000
M7 × 1 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A122	000000
M8 × 0.75 mm	Metric	-0.005 mm to 0.005 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A205	000000
M8 × 1 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A124	000000
M8 × 1.25 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A123	000000
M9 × 1 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A207	000000
M9 × 1.25 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A206	000000
M10 × 1 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A208	000000
M10 × 1.25 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A126	000000
M10 × 1.5 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A125	000000
M11 × 1 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A209	000000
M11 × 1.5 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A21	000000
M12 × 1 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A131	000000
M12 × 1.25 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A129	000000
M12 × 1.5 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A128	000000
M12 × 1.75 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A127	000000
M14 × 1 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A213	000000
M14 × 1.25 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A212	000000
M14 × 1.5 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A132	000000
M14 × 2 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A211	000000
M16 × 1 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A214	000000
M16 × 1.5 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A133	000000
M16 × 2 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A134	000000
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
M20 × 1 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A219	000000
M20 × 1.5 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A218	000000
M20 × 2.5 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A217	000000
M22 × 1.5 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A221	000000
M22 × 2.5 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A22	000000
M24 × 1.5 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A223	000000
M24 × 2 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A224	000000
M24 × 3 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A222	000000
M26 × 1.5 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A225	000000
M27 × 2 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A226	000000
M27 × 3 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A227	000000
M30 × 1.5 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A228	000000
M30 × 2 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A23	000000
M30 × 3.5 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A229	000000
M33 × 2 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A231	000000
M33 × 3.5 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A232	000000
M35 × 1.5 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A233	000000
M36 × 1.5 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A234	000000
M36 × 2 mm	Metric	-0.008 mm to 0.008 mm	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A235	000000
M36 × 4 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	3206A236	000000

Threaded Plug Gauges with Handle for Pipe Threads

Verify whether pipe fitting threads fall within tolerance. These gauges are attached to a handle, giving you a solid gripping point to thread and unthread them quickly. All are precisely manufactured to tight thread tolerances. If the gauges wear down, you can install new ones (not included) on the taperlock handle.

NPT Thread, NPTF Thread, and BSPT Thread—Gauges with NPT, NPTF, and BSPT threads have a notch to indicate whether the threads you’re checking are within tolerance. If it takes no more than one turn for the notch to sit flush against the end of your fitting, the threads are within tolerance.

BSPP Thread—Use gauges with NPSM and BSPP threads for go/no-go tests. The end with a go gauge checks the minimum internal thread size, and the end with a no-go gauge checks the maximum. Your fitting is within tolerance if it’s easy to thread in the go gauge but difficult to thread the no-go gauge more than two turns.

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.

						Plug Gauges with Calibration Certificate Traceable to NIST
	Pipe Size	Pitch Dia. Tolerance	Hardness	Material	Features		Each
NPT Thread



		1/16	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	2121A111	0000000


		1/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	2121A112	000000
		1/4	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	2121A113	000000
		3/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	2121A114	000000
		1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	2121A115	000000
		3/4	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	2121A116	000000
		1	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	2121A117	000000
		1 1/4	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	2121A118	000000
		1 1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	2121A119	000000
		2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	2121A121	000000
		2 1/2	-0.0005" to 0.0005"	Rockwell C60	Tool Steel	Taperlock Handle	2121A122	000000


		3	-0.0005" to 0.0005"	Rockwell C60	Tool Steel	Taperlock Handle	2121A144	000000
		4	-0.0005" to 0.0005"	Rockwell C60	Tool Steel	Taperlock Handle	2121A146	000000


		NPTF Thread



				1/16	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N113	000000


				1/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N114	000000
				1/4	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N115	000000
				3/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N116	000000
				1/2	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N117	000000
				3/4	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N118	000000


				BSPT Thread



						1/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N101	000000


						1/4	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N102	000000
						3/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N103	000000
						1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	6744N104	000000


						BSPP Thread



								1/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N105	000000


								1/4	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N106	000000
								3/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N107	000000
								1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	6744N108	000000
								3/4	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	6744N109	000000
								1	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	6744N111	000000
								1 1/4	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	6744N112	000000

Go/No-Go Helical Insert Threaded Plug Gauges with Handle

Check that holes tapped for helical threads are within tolerance. You’ll sometimes hear these threads referred to as Screw Thread Insert (STI) threads. To speed up tests, these gauges have a go gauge on one end and a no-go gauge on the other. The double-ended taperlock handle makes them quick to thread and unthread. It also lets you swap in new plug gauges (not included) in place of worn ones.

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.

								Plug Gauges with Calibration Certificate Traceable to NIST
	Thread Size	Thread Type	Pitch Dia. Tolerance	Hardness	Material	Features	For Thread Fit		Each
Class X Gauge



		2-56	UNC	-0.0002" to 0.0002"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N28	0000000


		4-40	UNC	-0.0002" to 0.0002"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N29	000000
		6-32	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N31	000000
		8-32	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N32	000000
		10-24	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N33	000000
		10-32	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N34	000000
		1/4"-20	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N35	000000
		1/4"-28	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N36	000000
		5/16"-18	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N37	000000
		5/16"-24	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N38	000000
		3/8"-16	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N39	000000


		3/8"-24	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N41	000000
		1/2"-13	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N42	000000
		1/2"-20	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N43	000000
		5/8"-11	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N44	000000
		3/4"-10	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7941N45	000000

Threaded Ring Gauges for Pipe Threads with Calibration Certificate

These gauges come with a certificate that’s traceable to NIST, confirming they were calibrated in a lab. The certificate, sometimes called a test report or a long-form certificate, includes the tested measurements. Use these gauges to verify whether external pipe threads are within tolerance.

Class X Gauge—NPT Thread

Use gauges with NPT threads on their own. If it takes no more than one turn for the gauge to sit flush against the end of your threads, they’re within tolerance.

Pipe Size	Hardness	Material	Pitch Dia. Tolerance	Certificate Type		Each
1/16	Rockwell C60	Tool Steel	-0.0002" to 0.0002"	Calibration Certificate Traceable to NIST	2121A131	0000000
1/8	Rockwell C60	Tool Steel	-0.0002" to 0.0002"	Calibration Certificate Traceable to NIST	2121A132	000000
1/4	Rockwell C60	Tool Steel	-0.0002" to 0.0002"	Calibration Certificate Traceable to NIST	2121A133	000000
3/8	Rockwell C60	Tool Steel	-0.0002" to 0.0002"	Calibration Certificate Traceable to NIST	2121A134	000000
1/2	Rockwell C60	Tool Steel	-0.0003" to 0.0003"	Calibration Certificate Traceable to NIST	2121A135	000000
3/4	Rockwell C60	Tool Steel	-0.0003" to 0.0003"	Calibration Certificate Traceable to NIST	2121A136	000000
1	Rockwell C60	Tool Steel	-0.0003" to 0.0003"	Calibration Certificate Traceable to NIST	2121A137	000000
1 1/4	Rockwell C60	Tool Steel	-0.0003" to 0.0003"	Calibration Certificate Traceable to NIST	2121A138	000000
1 1/2	Rockwell C60	Tool Steel	-0.0003" to 0.0003"	Calibration Certificate Traceable to NIST	2121A139	000000
2	Rockwell C60	Tool Steel	-0.0003" to 0.0003"	Calibration Certificate Traceable to NIST	2121A141	000000
2 1/2	Rockwell C60	Tool Steel	-0.0005" to 0.0005"	Calibration Certificate Traceable to NIST	2121A142	000000
3	Rockwell C60	Tool Steel	-0.0005" to 0.0005"	Calibration Certificate Traceable to NIST	2121A143	000000
4	Rockwell C60	Tool Steel	-0.0005" to 0.0005"	Calibration Certificate Traceable to NIST	2121A145	00000000

Class X Gauge—NPTF Thread

Use gauges with NPTF threads on their own. If it takes no more than one turn for the gauge to sit flush against the end of your threads, they’re within tolerance.

Pipe Size	Hardness	Material	Pitch Dia. Tolerance	Certificate Type		Each
1/16	Rockwell C60	Tool Steel	-0.0002" to 0.0002"	Calibration Certificate Traceable to NIST	8400N31	0000000
1/8	Rockwell C60	Tool Steel	-0.0002" to 0.0002"	Calibration Certificate Traceable to NIST	8400N32	000000
1/4	Rockwell C60	Tool Steel	-0.0002" to 0.0002"	Calibration Certificate Traceable to NIST	8400N33	000000
3/8	Rockwell C60	Tool Steel	-0.0002" to 0.0002"	Calibration Certificate Traceable to NIST	8400N34	000000
1/2	Rockwell C60	Tool Steel	-0.0003" to 0.0003"	Calibration Certificate Traceable to NIST	8400N35	000000
3/4	Rockwell C60	Tool Steel	-0.0003" to 0.0003"	Calibration Certificate Traceable to NIST	8400N36	000000

Class X Gauge—BSPT Thread

Use gauges with BSPT threads on their own. If it takes no more than one turn for the gauge to sit flush against the end of your threads, they’re within tolerance.

Pipe Size	Hardness	Material	Pitch Dia. Tolerance	Certificate Type		Each
1/8	Rockwell C60	Tool Steel	-0.0003" to 0.0003"	Calibration Certificate Traceable to NIST	8400N11	0000000
1/4	Rockwell C60	Tool Steel	-0.0003" to 0.0003"	Calibration Certificate Traceable to NIST	8400N12	000000
3/8	Rockwell C60	Tool Steel	-0.0003" to 0.0003"	Calibration Certificate Traceable to NIST	8400N13	000000
1/2	Rockwell C60	Tool Steel	-0.0003" to 0.0003"	Calibration Certificate Traceable to NIST	8400N14	000000

Class X Gauge—BSPP Thread

Use gauges with BSPP threads in pairs for go/no-go tests. Go gauges check the maximum external thread size, and no-go gauges check the minimum. If the threads you’re testing thread into the go gauge but not the no-go gauge, they’re within tolerance.

				Go Gauge			No-Go Gauge
Pipe Size	Hardness	Material	Certificate Type	Pitch Dia. Tolerance		Each	Pitch Dia. Tolerance		Each
1/8	Rockwell C60	Tool Steel	Calibration Certificate Traceable to NIST	-0.0003" to 0"	8400N15	0000000	0" to 0.0003"	8400N23	0000000
1/4	Rockwell C60	Tool Steel	Calibration Certificate Traceable to NIST	-0.0003" to 0"	8400N16	000000	0" to 0.0003"	8400N24	000000
3/8	Rockwell C60	Tool Steel	Calibration Certificate Traceable to NIST	-0.0003" to 0"	8400N17	000000	0" to 0.0003"	8400N25	000000
1/2	Rockwell C60	Tool Steel	Calibration Certificate Traceable to NIST	-0.0003" to 0"	8400N18	000000	0" to 0.0003"	8400N26	000000
3/4	Rockwell C60	Tool Steel	Calibration Certificate Traceable to NIST	-0.0003" to 0"	8400N19	000000	0" to 0.0003"	8400N27	000000
1	Rockwell C60	Tool Steel	Calibration Certificate Traceable to NIST	-0.0003" to 0"	8400N21	000000	0" to 0.0003"	8400N28	000000
1 1/4	Rockwell C60	Tool Steel	Calibration Certificate Traceable to NIST	-0.0003" to 0"	8400N22	000000	0" to 0.0003"	8400N29	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.

Class X Gauge

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 Metric Class 6H Thread Fit—For metric threads, the higher the class number, the looser the fit. Class 6H is the metric 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 Calibration Certificate Traceable to NIST



	6-32	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7938N31	0000000


	8-32	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7938N32	000000
	10-24	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7938N33	000000
	10-32	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	7938N101	000000
	1/4"-20	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7938N34	000000
	1/4"-28	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	7938N102	000000
	5/16"-18	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7938N35	000000
	5/16"-24	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	7938N103	000000
	3/8"-16	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7938N36	000000
	3/8"-24	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	7938N104	000000
	7/16"-20	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	7938N105	000000


	1/2"-13	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7938N37	000000
	1/2"-20	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	7938N106	000000
	5/8"-11	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7938N38	000000
	5/8"-18	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	7938N107	000000
	3/4"-10	UNC	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7938N39	000000
	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
	1"-8	UNC	-0.0004" to 0.0004"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B	7938N41	000000
	1 1/4"-12	UNF	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Unified Standard Class 2B, Unified Standard Class 3B	7938N109	000000
	M5 × 0.8 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	7938N42	000000
	M6 × 1 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	7938N43	000000


	M8 × 1.25 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	7938N44	000000
	M10 × 1.25 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	7938N45	000000
	M10 × 1.5 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	7938N46	000000
	M12 × 1.25 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	7938N47	000000
	M12 × 1.75 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	7938N48	000000
	M14 × 1.5 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	7938N49	000000
	M16 × 1.5 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	7938N51	000000
	M16 × 2 mm	Metric	-0.0003" to 0.0003"	Rockwell C70	Chrome-Plated Tool Steel	Double-Ended Taperlock Handle	Metric Class 6H	7938N52	000000