Gauge Handles | McMaster-Carr

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For Ring Gauge Size

9.271 mm to 12.954 mm

12.954 mm to 20.955 mm

20.955 mm to 28.829 mm

28.829 mm to 38.354 mm

Screw Size

For Plug Gauge Thread Diameter

249 Products

Plug Gauge Handles


Style A	Style B

Add a handle to hold your plug gauge. No need for bushings—one handle fits a range of plug gauge sizes.

	For Plug Gauge Size
Style	Inch	Metric, mm	Overall Lg.	Material	Color	End Color		Each
A	0.0300" to 0.5000"	0.7620 to 12.7000	4 3/8"	Aluminum	Green	—	2302A113	000000
A	0.0300" to 0.5000"	0.7620 to 12.7000	4 3/8"	Aluminum	Purple	—	2302A114	00000
A	0.0300" to 0.5000"	0.7620 to 12.7000	4 3/8"	Aluminum	Red	—	2302A115	00000
A	0.0300" to 0.5000"	0.7620 to 12.7000	4 3/8"	Aluminum	Yellow	—	2302A116	00000
A	0.0300" to 0.5000"	0.7620 to 12.7000	4 3/8"	Aluminum	—	—	2302A55	00000
B	0.0110" to 0.0605"	0.2800 to 1.5100	4"	Aluminum	—	Green, Red	2367A11	00000
B	0.0610" to 0.2505"	1.5200 to 7.7100	5 3/8"	Aluminum	—	Green, Red	2367A12	00000
B	0.2510" to 0.5005"	7.7200 to 12.7100	6 1/8"	Aluminum	—	Green, Red	2367A13	00000
B	0.5010" to 0.6255"	12.7200 to 15.3100	5 1/2"	Aluminum	—	Green, Red	2367A14	00000
B	0.6260" to 0.7505"	15.3200 to 17.8100	5 3/4"	Aluminum	—	Green, Red	2367A15	00000
B	0.7510" to 0.8325"	17.8200 to 20.3700	5 7/8"	Aluminum	—	Green, Red	2367A16	00000
B	0.8330" to 1.0005"	20.3800 to 25.4100	6"	Aluminum	—	Green, Red	2367A17	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 X Gauge



		0.0040" to 0.0250"	0.0040" to 0.0250"	0" to 0.00004"	-0.00004" to 0"	5 1/4"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A21	000000


		0.0251" to 0.0750"	0.0251" to 0.0750"	0" to 0.00004"	-0.00004" to 0"	5 1/4"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A83	00000
		0.0751" to 0.1800"	0.0751" to 0.1800"	0" to 0.00004"	-0.00004" to 0"	5 15/32"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A84	00000
		0.1801" to 0.2810"	0.1801" to 0.2810"	0" to 0.00004"	-0.00004" to 0"	6 1/8"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A85	00000
		0.2811" to 0.4060"	0.2811" to 0.4060"	0" to 0.00004"	-0.00004" to 0"	6 19/32"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A86	00000
		0.4061" to 0.5100"	0.4061" to 0.5100"	0" to 0.00004"	-0.00004" to 0"	7 3/16"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A87	00000
		0.5101" to 0.6350"	0.5101" to 0.6350"	0" to 0.00004"	-0.00004" to 0"	7 17/32"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A88	00000
		0.6351" to 0.7600"	0.6351" to 0.7600"	0" to 0.00004"	-0.00004" to 0"	7 21/32"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A89	00000
		0.7601" to 1.0000"	0.7601" to 1.0000"	0" to 0.00006"	-0.00006" to 0"	8 1/4"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A91	00000
		0.1010 mm to 0.3810 mm	0.1010 mm to 0.3810 mm	0 mm to 0.001 mm	-0.001 mm to 0 mm	5 1/4"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A41	000000
		0.3820 mm to 0.7620 mm	0.3820 mm to 0.7620 mm	0 mm to 0.001 mm	-0.001 mm to 0 mm	5 1/4"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A42	00000


		0.7630 mm to 1.9050 mm	0.7630 mm to 1.9050 mm	0 mm to 0.001 mm	-0.001 mm to 0 mm	5 1/4"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A43	00000
		1.9060 mm to 4.5720 mm	1.9060 mm to 4.5720 mm	0 mm to 0.001 mm	-0.001 mm to 0 mm	5 1/2"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A44	00000
		4.5730 mm to 7.1370 mm	4.5730 mm to 7.1370 mm	0 mm to 0.001 mm	-0.001 mm to 0 mm	6 1/8"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A45	00000
		7.1380 mm to 10.3120 mm	7.1380 mm to 10.3120 mm	0 mm to 0.001 mm	-0.001 mm to 0 mm	6 3/4"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A46	00000
		10.3130 mm to 12.9540 mm	10.3130 mm to 12.9540 mm	0 mm to 0.001 mm	-0.001 mm to 0 mm	7 1/4"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A47	00000
		12.9550 mm to 16.1290 mm	12.9550 mm to 16.1290 mm	0 mm to 0.001 mm	-0.001 mm to 0 mm	7 1/2"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A48	00000
		16.1300 mm to 19.3040 mm	16.1300 mm to 19.3040 mm	0 mm to 0.001 mm	-0.001 mm to 0 mm	7 3/4"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A49	00000
		19.3050 mm to 25.6540 mm	19.3050 mm to 25.6540 mm	0 mm to 0.001 mm	-0.001 mm to 0 mm	8 1/4"	4	Rockwell C60	Tool Steel	ASME B89.1.5	Handle	2328A51	000000


		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	21205A211	00000


				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	21205A221	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	21205A231	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	21205A241	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	21205A251	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	21205A26	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	21205A27	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	21205A28	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	21205A71	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	21205A721	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	21205A73	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	21205A74	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	21205A75	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	21205A77	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	21205A78	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	21205A79	000000

Go/No-Go Hex Plug Gauges with Handle

Confirm hex drives on socket head screws are within tolerance. A go and no-go gauge in one, these gauges are handy for testing hole size and depth in machining and manufacturing. Their handle gives you a good grip to insert each end into the hole you’re measuring. If the go gauge enters the hole and the no-go gauge is unable to enter, the hole is within tolerance. Gauges are made of tool steel, the most common material for plug gauges, because it’s strong, hard, and resistant to wear.

All come with an accuracy certificate traceable to NIST to certify their sizes are within tolerance. They also meet ASME B18.3, the same dimensional standards for hex drive fasteners.

	Plug Gauge Size Tolerance
Plug Gauge Size	Go	No-Go	Hardness	Material	End Color	Specs. Met	Features		Each



	0.0280"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N11	0000000


	0.0350"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N12	000000
	0.0500"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N13	000000
	0.0625"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N14	000000
	0.0781"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N15	000000
	0.0938"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N16	000000
	0.1094"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N17	000000
	0.1250"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N18	000000
	0.1406"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N19	000000
	0.1563"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N21	000000
	0.1875"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N22	000000


	0.2188"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N23	000000
	0.2500"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N24	000000
	0.3125"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N25	000000
	0.3750"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N26	000000
	0.4375"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N27	000000
	0.5000"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N28	000000
	0.5625"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N29	000000
	0.6250"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N31	000000
	0.7500"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N32	000000
	0.8700"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N33	000000


	1.0000"	0" to 0.0001"	-0.0001" to 0"	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N34	000000
	1.5 mm	0 mm to 0.003 mm	-0.003 mm to 0 mm	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N35	000000
	2 mm	0 mm to 0.003 mm	-0.003 mm to 0 mm	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N36	000000
	2.5 mm	0 mm to 0.003 mm	-0.003 mm to 0 mm	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N37	000000
	3 mm	0 mm to 0.003 mm	-0.003 mm to 0 mm	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N38	000000
	4 mm	0 mm to 0.003 mm	-0.003 mm to 0 mm	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N39	000000
	5 mm	0 mm to 0.003 mm	-0.003 mm to 0 mm	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N41	000000
	6 mm	0 mm to 0.003 mm	-0.003 mm to 0 mm	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N42	000000
	8 mm	0 mm to 0.003 mm	-0.003 mm to 0 mm	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N43	000000
	10 mm	0 mm to 0.003 mm	-0.003 mm to 0 mm	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N44	000000


	12 mm	0 mm to 0.003 mm	-0.003 mm to 0 mm	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N45	000000
	14 mm	0 mm to 0.003 mm	-0.003 mm to 0 mm	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N46	000000
	17 mm	0 mm to 0.003 mm	-0.003 mm to 0 mm	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N47	000000
	19 mm	0 mm to 0.003 mm	-0.003 mm to 0 mm	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N48	000000
	22 mm	0 mm to 0.003 mm	-0.003 mm to 0 mm	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N49	000000
	24 mm	0 mm to 0.003 mm	-0.003 mm to 0 mm	Rockwell C60	Tool Steel	Green, Red	ASME B18.3	Handle	8178N51	000000

Ball-End Plug Gauges with Handle

Check the true diameter of holes, even if they’re bent or curved. The thin stem on these gauges flexes to reach features deep inside holes and cavities. Unlike standard plug gauges, these gauges have a ball end that centers itself in holes for accurate tolerance tests. They’re often used to inspect bearings and parts made with CNC or milling machines. If the ball passes through the hole, you know the diameter is at least as big as the ball. The handle makes it easier to reach holes that are deep or hard to get to compared to using gauge balls without a handle.

				Stem
	Plug Gauge Size	Plug Gauge Size Tolerance	Handle Lg.	Dia.	Lg.	Surface Smoothness, RMS, μin	Hardness	Material	Features		Each



		0.0110"	-0.0001" to 0.0001"	1 29/32"	0.009"	3"	2	Rockwell C60	Tool Steel	Handle	6803N11	0000000


		0.0120"	-0.0001" to 0.0001"	1 29/32"	0.009"	3"	2	Rockwell C60	Tool Steel	Handle	6803N12	000000
		0.0130"	-0.0001" to 0.0001"	1 29/32"	0.009"	3"	2	Rockwell C60	Tool Steel	Handle	6803N13	000000
		0.0140"	-0.0001" to 0.0001"	1 29/32"	0.009"	3"	2	Rockwell C60	Tool Steel	Handle	6803N14	000000
		0.0150"	-0.0001" to 0.0001"	1 29/32"	0.013"	3"	2	Rockwell C60	Tool Steel	Handle	6803N15	000000
		0.0160"	-0.0001" to 0.0001"	1 29/32"	0.013"	3"	2	Rockwell C60	Tool Steel	Handle	6803N16	000000
		0.0170"	-0.0001" to 0.0001"	1 29/32"	0.013"	3"	2	Rockwell C60	Tool Steel	Handle	6803N17	000000
		0.0180"	-0.0001" to 0.0001"	1 29/32"	0.013"	3"	2	Rockwell C60	Tool Steel	Handle	6803N18	000000
		0.0190"	-0.0001" to 0.0001"	1 29/32"	0.013"	3"	2	Rockwell C60	Tool Steel	Handle	6803N19	000000
		0.0200"	-0.0001" to 0.0001"	1 29/32"	0.013"	3"	2	Rockwell C60	Tool Steel	Handle	6803N21	000000
		0.0210"	-0.0001" to 0.0001"	1 29/32"	0.013"	3"	2	Rockwell C60	Tool Steel	Handle	6803N22	000000


		0.0220"	-0.0001" to 0.0001"	1 29/32"	0.013"	3"	2	Rockwell C60	Tool Steel	Handle	6803N23	000000
		0.0250"	-0.0001" to 0.0001"	1 29/32"	0.018"	3"	2	Rockwell C60	Tool Steel	Handle	6803N24	000000
		0.0270"	-0.0001" to 0.0001"	1 29/32"	0.018"	3"	2	Rockwell C60	Tool Steel	Handle	6803N25	000000
		0.0280"	-0.0001" to 0.0001"	1 29/32"	0.018"	3"	2	Rockwell C60	Tool Steel	Handle	6803N26	000000
		0.0290"	-0.0001" to 0.0001"	1 29/32"	0.018"	3"	2	Rockwell C60	Tool Steel	Handle	6803N27	000000
		0.0300"	-0.0001" to 0.0001"	1 29/32"	0.022"	3"	2	Rockwell C60	Tool Steel	Handle	6803N28	000000
		0.0310"	-0.0001" to 0.0001"	1 29/32"	0.022"	3"	2	Rockwell C60	Tool Steel	Handle	6803N29	000000
		0.0320"	-0.0001" to 0.0001"	1 29/32"	0.022"	3"	2	Rockwell C60	Tool Steel	Handle	6803N31	000000
		0.0350"	-0.0001" to 0.0001"	1 29/32"	0.022"	3"	2	Rockwell C60	Tool Steel	Handle	6803N32	000000
		0.0380"	-0.0001" to 0.0001"	1 29/32"	0.022"	3"	2	Rockwell C60	Tool Steel	Handle	6803N33	000000


		0.0390"	-0.0001" to 0.0001"	1 29/32"	0.022"	3"	2	Rockwell C60	Tool Steel	Handle	6803N34	000000
		0.0400"	-0.0001" to 0.0001"	1 29/32"	0.025"	3"	2	Rockwell C60	Tool Steel	Handle	6803N35	000000
		0.0500"	-0.0001" to 0.0001"	1 29/32"	0.032"	3"	2	Rockwell C60	Tool Steel	Handle	6803N36	00000
		0.0600"	-0.0001" to 0.0001"	1 29/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N37	000000
		0.0610"	-0.0001" to 0.0001"	1 29/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N38	000000
		0.0620"	-0.0001" to 0.0001"	1 29/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N39	000000
		0.0625"	-0.0001" to 0.0001"	1 29/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N41	000000
		0.0630"	-0.0001" to 0.0001"	1 29/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N42	000000
		0.0640"	-0.0001" to 0.0001"	1 29/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N43	000000
		0.0650"	-0.0001" to 0.0001"	1 29/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N44	000000


		0.0700"	-0.0001" to 0.0001"	1 29/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N45	000000
		0.0780"	-0.0001" to 0.0001"	2 15/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N46	000000
		0.0800"	-0.0001" to 0.0001"	2 15/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N47	000000
		0.0900"	-0.0001" to 0.0001"	2 15/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N48	000000
		0.0930"	-0.0001" to 0.0001"	2 15/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N49	000000
		0.0940"	-0.0001" to 0.0001"	2 15/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N51	000000
		0.0950"	-0.0001" to 0.0001"	2 15/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N52	000000
		0.0960"	-0.0001" to 0.0001"	2 15/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N53	000000
		0.0980"	-0.0001" to 0.0001"	2 15/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N54	000000
		0.1000"	-0.0001" to 0.0001"	2 15/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N55	000000


		0.1180"	-0.0001" to 0.0001"	2 15/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N56	000000
		0.1200"	-0.0001" to 0.0001"	2 15/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N57	000000
		0.1240"	-0.0001" to 0.0001"	2 15/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N58	000000
		0.1250"	-0.0001" to 0.0001"	2 15/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N59	000000
		0.1260"	-0.0001" to 0.0001"	2 15/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N61	000000
		0.1570"	-0.0001" to 0.0001"	2 15/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N62	000000
		0.1870"	-0.0001" to 0.0001"	3 1/8"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N63	000000
		0.1880"	-0.0001" to 0.0001"	3 1/8"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N64	000000
		0.1900"	-0.0001" to 0.0001"	3 1/8"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N65	000000
		0.2490"	-0.0001" to 0.0001"	3 1/8"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N66	000000

0.2500"	-0.0001" to 0.0001"	3 1/8"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N67	000000
0.2510"	-0.0001" to 0.0001"	3 1/8"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N68	000000
0.2520"	-0.0001" to 0.0001"	3 1/8"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N69	000000
0.3750"	-0.0001" to 0.0001"	3 19/32"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N71	000000
0.5000"	-0.0001" to 0.0001"	4 3/16"	0.042"	3"	2	Rockwell C60	Tool Steel	Handle	6803N72	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.

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



		1/16	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	2365A11	0000000	2121A111	0000000


		1/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	2365A111	000000	2121A112	000000
		1/4	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	2365A112	000000	2121A113	000000
		3/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	2365A113	000000	2121A114	000000
		1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	2365A114	000000	2121A115	000000
		3/4	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	2365A115	000000	2121A116	000000
		1	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	2365A116	000000	2121A117	000000
		1 1/4	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	2365A117	000000	2121A118	000000
		1 1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	2365A118	000000	2121A119	000000
		2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	2365A119	000000	2121A121	000000
		2 1/2	-0.0005" to 0.0005"	Rockwell C60	Tool Steel	Taperlock Handle	2365A121	000000	2121A122	000000


		3	-0.0005" to 0.0005"	Rockwell C60	Tool Steel	Taperlock Handle	2365A222	000000	2121A144	000000
		4	-0.0005" to 0.0005"	Rockwell C60	Tool Steel	Taperlock Handle	2365A225	000000	2121A146	000000


		NPTF Thread



				1/16	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N32	000000	6744N113	000000


				1/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N33	000000	6744N114	000000
				1/4	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N34	000000	6744N115	000000
				3/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N35	000000	6744N116	000000
				1/2	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N36	000000	6744N117	000000
				3/4	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N37	000000	6744N118	000000


				NPSM Thread



						1/8	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	6744N11	000000	———	0


						1/4	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	6744N12	000000	———	0
						3/8	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	6744N13	000000	———	0
						1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	6744N14	000000	———	0
						3/4	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	6744N15	000000	———	0


						BSPT Thread



								1/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N21	000000	6744N101	000000


								1/4	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N22	000000	6744N102	000000
								3/8	-0.0002" to 0.0002"	Rockwell C60	Tool Steel	Taperlock Handle	6744N23	000000	6744N103	000000
								1/2	-0.0003" to 0.0003"	Rockwell C60	Tool Steel	Taperlock Handle	6744N24	000000	6744N104	000000


								BSPP Thread



1/8	-0.0002" to 0.0002"									Rockwell C60	Tool Steel	Taperlock Handle	6744N25	000000	6744N105	000000


1/4	-0.0002" to 0.0002"									Rockwell C60	Tool Steel	Taperlock Handle	6744N26	000000	6744N106	000000
3/8	-0.0002" to 0.0002"									Rockwell C60	Tool Steel	Taperlock Handle	6744N27	000000	6744N107	000000
1/2	-0.0003" to 0.0003"									Rockwell C60	Tool Steel	Taperlock Handle	6744N28	000000	6744N108	000000
3/4	-0.0003" to 0.0003"									Rockwell C60	Tool Steel	Taperlock Handle	6744N29	000000	6744N109	000000
1	-0.0003" to 0.0003"									Rockwell C60	Tool Steel	Taperlock Handle	6744N3	000000	6744N111	000000
1 1/4	-0.0003" to 0.0003"									Rockwell C60	Tool Steel	Taperlock Handle	6744N31	000000	6744N112	000000

Acme Threaded Plug Gauges with Handle

Determine if lead nuts, screw collars, and other parts with internal Acme threads are within tolerance. These gauges are attached to a handle to help you quickly thread or unthread them. All are precisely manufactured to tight tolerances. Instead of replacing the whole tool when a gauge wears down, you can insert a new gauge (not included) into the 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 Gauges—Go gauges check the minimum hole diameter.

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

For Thread Fit—Thread fit designates the tightness or looseness of mating threads. Acme Class 2G is standard for Acme threads.

						Go Gauges			No-Go Gauges
	Thread Size	Hardness	Material	Features	For Thread Fit	Pitch Dia. Tolerance		Each	Pitch Dia. Tolerance		Each
Class X Gauge



		1/4"-16	Rockwell C60	Tool Steel	Taperlock Handle	Acme Class 2G	0" to 0.0003"	23565A341	0000000	-0.0003" to 0"	23565A352	0000000


		3/8"-12	Rockwell C60	Tool Steel	Taperlock Handle	Acme Class 2G	0" to 0.0003"	23565A342	000000	-0.0003" to 0"	23565A353	000000
		1/2"-10	Rockwell C60	Tool Steel	Taperlock Handle	Acme Class 2G	0" to 0.0004"	23565A343	000000	-0.0004" to 0"	23565A354	000000
		5/8"-8	Rockwell C60	Tool Steel	Taperlock Handle	Acme Class 2G	0" to 0.0004"	23565A344	000000	-0.0004" to 0"	23565A355	000000
		3/4"-5	Rockwell C60	Tool Steel	Taperlock Handle	Acme Class 2G	0" to 0.0004"	23565A345	000000	-0.0004" to 0"	23565A356	000000
		3/4"-6	Rockwell C60	Tool Steel	Taperlock Handle	Acme Class 2G	0" to 0.0004"	23565A346	000000	-0.0004" to 0"	23565A357	000000
		1"-4	Rockwell C60	Tool Steel	Taperlock Handle	Acme Class 2G	0" to 0.0004"	23565A347	000000	-0.0004" to 0"	23565A358	000000
		1"-5	Rockwell C60	Tool Steel	Taperlock Handle	Acme Class 2G	0" to 0.0004"	23565A348	000000	-0.0004" to 0"	23565A359	000000
		1"-10	Rockwell C60	Tool Steel	Taperlock Handle	Acme Class 2G	0" to 0.0004"	23565A349	000000	-0.0004" to 0"	23565A361	000000
		1 1/4"-5	Rockwell C60	Tool Steel	Taperlock Handle	Acme Class 2G	0" to 0.0004"	23565A351	000000	-0.0004" to 0"	23565A362	000000

Battery-Powered Pistol-Grip Drivers for Threaded Plug Gauges

Test thread tolerance in seconds. A time-saver for high-volume work, these drivers quickly thread gauges in and out of holes for you—just pull the trigger. A green ring lights up to let you know your internal threads are within tolerance. If they're not, the gauge won't thread in fully. To avoid jamming, these drivers reverse gauges out of holes as powerfully as they thread them in. The pistol grip minimizes hand fatigue during long periods of use.

These drivers have two speeds to suit the job you need. The high speed works for most applications, while the lower speed is ideal for your largest thread sizes, or when you need more torque. Fine-tune torque even further with the included torque adjustment tool. These drivers come with two batteries, so you’ll never be attached to a cord or without power. Use one battery while charging the other.

For Plug Ga. Thread Dia.	Max. No-Load Rotational Speed, rpm	Max. Torque, ft·lbf	No. of Speeds	Voltage, V DC	Batteries Included	Battery Charger Included	Overall Lg.	Wt., lb.	Features	Includes		Each
No. 0, No. 1, No. 2, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/4", 5/16", 3/8", 7/16", 1/2", M3, M3.5, M4, M5, M6, M7, M8, M9, M10, M11, M12	1,550	1.47	2	14.4	Yes	Yes	8"	2.5	Go-Indicating Light	Torque Adjustment Tool, Two Rechargeable Lithium Ion Batteries	7876N11	000000000

Accessories and Replacements for Plug Gauge Drivers

Thread Adapters

Get started by placing your threaded plug gauge in a thread adapter, then insert the adapter into the driver’s chuck. The adapter quickly attaches and detaches from the chuck to easily swap out different sizes of threaded plug gauges.

For Plug Ga. Thread Dia.		Each
No. 4, No. 5, No. 6, M3, M3.5	7876N12	0000000
No. 8, No. 10, No. 12, M4, M5	7876N13	000000
1/4", 5/16", M6, M7, M8, M9	7876N14	000000
3/8", 7/16", 1/2", M10, M11, M12	7876N15	000000

	Battery Type	Battery Voltage, V DC	Battery Charging Time, min.
Lithium Ion (Li-Ion) Battery


Rechargeable	14.4	70	7876N16	0000000

Replacement Chargers

Image of Product. Front orientation. Battery Chargers. Battery-Powered Pistol-Grip Drivers for Threaded Plug Gauges.

					Electrical
	For Battery Voltage, V DC	For No. of Batteries	Input Voltage, V AC	Charging Time, min.	Connection	No. of Blades	Cord Lg., ft.		Each
For Lithium Ion (Li-Ion) Batteries



		14.4	1	100, 240	70	Straight Blade	2	6 1/2	7876N17	0000000

Ring Gauge Holders

Often used with go and no-go ring gauges, these holders keep two ring gauges still for quick, repeat measuring. Since they're a stable platform, you can measure your shafts, rods, and other cylindrical parts from a consistent angle every time. Loosen the socket head screw to separate the two-piece construction and slot your rings in. Made of black anodized aluminum, they stand up to the friction from switching out rings. They also resist corrosion.

For Ring Gauge Size	Overall Lg.	Material	Color		Each
0.050" to 0.150" 1.270 mm to 3.810 mm	2 7/8"	Anodized Aluminum	Black	6727N11	0000000
0.150" to 0.240" 3.810 mm to 6.096 mm	2 7/8"	Anodized Aluminum	Black	6727N12	000000
0.240" to 0.365" 6.096 mm to 9.271 mm	3 1/2"	Anodized Aluminum	Black	6727N13	000000
0.365" to 0.510" 9.271 mm to 12.954 mm	4 1/4"	Anodized Aluminum	Black	6727N14	000000
0.510" to 0.825" 12.954 mm to 20.955 mm	5"	Anodized Aluminum	Black	6727N15	000000
0.825" to 1.135" 20.955 mm to 28.829 mm	5 3/4"	Anodized Aluminum	Black	6727N16	000000
1.135" to 1.510" 28.829 mm to 38.354 mm	6 1/2"	Anodized Aluminum	Black	6727N17	000000

Threaded Ring Gauge Holders

Join two ring gauges with different sizes to quickly check if threads are within tolerance. Secure your gauges to these holders with the included fasteners.

For Screw Size	Overall Lg.	Material	Color		Each
No. 0, No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12	1"	Aluminum	Black	8314N11	000000
1/4", 5/16"	1 3/8"	Aluminum	Black	8314N12	00000
3/8", 7/16", 1/2"	1 3/4"	Aluminum	Black	8314N13	00000
9/16", 5/8", 11/16", 3/4"	2 1/4"	Aluminum	Black	8314N14	00000
7/8", 1", 1 1/8"	2 5/8"	Aluminum	Black	8314N15	00000
1 1/4", 1 3/8", 1 1/2"	3 1/4"	Aluminum	Black	8314N16	00000
M1.6, M2, M2.2, M2.5, M3, M3.5, M4, M4.5, M5	1"	Aluminum	Black	8314N17	00000
M6, M7, M8, M9	1 3/8"	Aluminum	Black	8314N18	00000
M10, M11, M12	1 3/4"	Aluminum	Black	8314N19	00000
M14, M16, M18, M20	2 1/4"	Aluminum	Black	8314N21	00000