Unified Thread Plug Gage Size from 3 1/2-12UN to 5-16UN,FYOU PMEC Leading Solutions

Unified Thread Plug Gage Size from 3 1/2-12UN to 5-16UN

UNS thread gauge is Unified Special Pitch thread gauge; UNEF thread gauges is Unified National Extra Fine thread gauge; UNF thread gauge is UNIFIED NATIONAL FINE thread gage; UNC thread gage is Unified National Coarse thread gage with 60 degree thread angle; UN thread gauge is Unified Constant Pitch thread gauge.
Application of Unified Thread Working Plug Gauge: Comprehensive inspection of unified internal threads specified in ANSI B1.1-1982 and FED-STD-H28, H28/3 (1978)
ANSI unified thread working plug gauge inspection environment: standard temperature 20°C ± 1°C, standard condition measurement force is zero.
Unified Thread Working Plug Gauge Inspection Method: The length measuring instrument uses the “three-needle method” to detect a single mean diameter. The universal tool microscope can detect pitch, half angle, minor diameter, and clearance groove.

Unified Thread Plug Gage Size from 3 1/2-12UN to 5-16UN

Size	T.P.I	Pitch	Class	Go/No Go	Major d	Pitch Diameter d 2	Minor Diameter d 1	Thread Length L 2	ToTal length L
3 1/2-12UN	12	2.12	2B	GO	88.915	87.546	86.304	26	182
				NO GO	88.656	87.739	86.304	16
3 1/2-16UN	16	1.59	2B	GO	88.915	87.889	86.952	18	174
				NO GO	88.748	88.059	86.952	16
3 5/8-12UN	12	5.64	2B	GO	92.09	90.721	89.479	26	182
				NO GO	91.834	90.917	89.479	16
3 5/8-16UN	16	2.12	2B	GO	92.09	91.064	90.127	18	174
				NO GO	91.925	91.237	90.127	16
3 3/4-4UNC	4	1.59	2B	GO	95.273	91.15	87.46	55	230
				NO GO	94.244	91.493	87.46	35
3 3/4-12UN	12	2.12	2B	GO	95.265	93.896	92.654	26	182
				NO GO	95.009	94.092	92.654	16
3 3/4-16UN	16	1.59	2B	GO	95.265	94.239	93.302	18	174
				NO GO	95.1	94.412	93.302	16
3 7/8-12UN	12	6.35	2B	GO	98.44	97.071	95.829	26	182
				NO GO	98.184	97.267	95.829	16
3 7/8-16UN	16	2.12	2B	GO	98.44	97.414	96.477	18	174
				NO GO	98.275	97.587	96.477	16
4-4UNC	4	1.59	2B	GO	101.623	97.5	93.81	55	230
				NO GO	100.599	97.848	93.81	35
4-12UN	12	2.12	2B	GO	101.615	100.246	99.004	26	182
				NO GO	101.359	100.442	99.004	16
4-16UN	16	1.59	2B	GO	101.615	100.589	99.652	18	174
				NO GO	101.45	100.762	99.652	16
4 1/8-12UN	12	6.35	2B	GO	104.798	103.431	102.179	20	109
				NO GO	104.534	103.617	102.179	22
4 1/8-16UN	16	2.12	2B	GO	104.798	103.774	102.827	20	109
				NO GO	104.625	103.937	102.827	22
4 1/4-12UN	12	1.59	2B	GO	107.973	106.606	105.354	20	109
				NO GO	107.709	106.792	105.354	22
4 1/4-16UN	16	2.12	2B	GO	107.973	106.949	106.002	20	109
				NO GO	107.8	107.112	106.002	22
4 3/8-12UN	12	1.59	2B	GO	111.148	109.781	108.529	20	109
				NO GO	110.884	109.967	108.529	22
4 3/8-16UN	16	6.35	2B	GO	111.148	110.124	109.177	20	109
				NO GO	110.975	110.287	109.177	22
4 1/2-12UN	12	2.12	2B	GO	114.323	112.956	111.704	20	109
				NO GO	114.059	113.142	111.704	22
4 1/2-16UN	16	1.59	2B	GO	114.323	113.299	112.352	20	109
				NO GO	114.15	113.462	112.352	22
4 5/8-12UN	12	2.12	2B	GO	117.498	116.131	114.879	20	109
				NO GO	117.239	116.322	114.879	22
4 5/8-16UN	16	1.59	2B	GO	117.498	116.474	115.527	20	109
				NO GO	117.333	116.644	115.527	22
4 3/4-12UN	12	6.35	2B	GO	120.673	119.306	118.054	20	109
				NO GO	120.414	119.497	118.054	22
4 3/4-16UN	16	2.12	2B	GO	120.673	119.649	118.702	20	109
				NO GO	120.508	119.819	118.702	22
4 7/8-12UN	12	1.59	2B	GO	123.848	122.481	121.229	20	109
				NO GO	123.589	122.672	121.229	22
4 7/8-16UN	16	2.12	2B	GO	123.848	122.824	121.877	20	109
				NO GO	123.683	122.994	121.877	22
5-12UN	12	1.59	2B	GO	127.023	125.656	124.404	20	109
				NO GO	126.764	125.847	124.404	22
5-16UN	16	6.35	2B	GO	127.023	125.999	125.052	20	109
				NO GO	126.858	126.169	125.052	22

How to order?
Please specify the item size diameter, teeth per inch, accuracy class in your order. We can provide ring gauges in class 1A,2A,3A and plug gauges in class 1B,2B and 3B.

For Example： Ring gauge 2 1/4－12UN-2A GO/NO GO
Plug gauge 2 1/4－12UN-2B GO/NO GO
And E-mail to: sales@fyougauges.com

Super Size thread Gages is available, till to Max Size: 1000 mm ,come with long form calibration certificate.