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1.875-10Stub acme-2G thread Ring gauge was delviry to USA by SF EXPRESS, How long? 1 weeks
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1.875-10Stub acme-2G thread Ring gauge was delviry to USA by SF EXPRESS, How long? 1 week

1.875-10Stub acme-2G  thread Ring gauge was delviry to USA by SF EXPRESS, How long? 1 week

Thread Plug Gauge: ACME and STUB ACME · Gauge dimensions for Acme threads are as per ASME B1.5 and Stub Acme as per ANSI/ASME B1.8 

 ACME and Stub ACME Thread Gauge Suppliers, Traders, Manufacturers, Exporters From China

the ACME thread forms are with 29° thread angle, their thread height is half of the pitch, the peak and crest are flat.

ACME screw threads are used for power transmission. The common threads used for fastening use a 30° flank angle. Some engineers desired to use a 0° flank angle for power transmission. Much engineering work was invested in determining the ‘best’ thread flank angle for power transmission. It was determined that mechanically, 14.5° was the best. It was named: ACME. The word ACME means “the best”.

Other than the 29° ACME included thread angle, there are several options for ACME threads. They include: General-Form, Stub-ACME, Centralizing ACME, and Centralizing Stub ACME. To extend the confusion the Stub ACME has standard modifications: M1 and M2. To compound the selection difficulties many engineers have developed, and are still developing, their own versions of the ACME thread to meet specific design goals.

型号量规编号中径






1-3/4-12UN-2A21-715-R99KGO PD：1.6937-1.6941   inch
NOGO PD：1.6881-1.6885 inch



2 3/4-4   ACME-2G21-716-R16BGO PD：2.6106-2.6117   inch
NOGO PD：2.5868-2.5879 inch
1.875-6 STUB   ACME-LH21-716-R27MGO PD：1.8241-1.8250 inch
NOGO PD：1.8045-1.8054 inch
1.875-6 STUB   ACME-LH21-716-P39UGO PD：1.8254-1.8263   inch
NOGO PD：1.8441-1.8450 inch



1 1/8-12UNF-2A21-719-R81VGO PD：1.0688-1.0691   inch
NOGO PD：1.0631-1.0634 inch






1.25-6 STUB   ACME-2G21-723-P28DGO PD：1.2000-1.2009   inch
NOGO PD：1.2171-1.2180 inch
1-6 STUB   ACME-2G21-723-P15GGO PD：0.9500-0.9509   inch
NOGO PD：0.9671-0.9680 inch



9/16-18UNF-2B   镀前21-723-P23WGO PD：13.376-13.384   mm
NOGO PD：13.526-13.534 mm



3/8-24 UNF-2B21-728-P16UGO PD：0.3479-0.3482   inch
NOGO PD：0.3525-0.3528 inch



3.000-6 STUB ACME-2G21-805-R99SGO PD：2.9351-2.9360   inch
NOGO PD：2.9134-2.9143 inch
2 1/2-6 Stub Acme-2G21-805-P01AGO PD：2.4500-2.4509   inch
NOGO PD：2.4708-2.4717 inch






3-12UNC-2A21-807-R855GO PD：74.7674-74.7756   mm
NOGO PD：74.6176-74.6257 mm
3-12UNC-2A21-807-R878GO PD：74.7674-74.7756   mm
NOGO PD：74.6176-74.6257 mm



M32×0.5-6g21-813-R739GO PD：31.647-31.655   mm
NOGO PD：31.559-31.567 mm



5/16-18UNC-2B   .006 Oversize21-814-P101
    21-814-P202		通规大径：0.3185-0.3190   inch
   GO PD：0.2824-0.2827 inch
    止规大径：0.3113-0.3118 inch
NOGO PD：0.2874-0.2877 inch






M7.0×0.75-6g21-816-S001GO PD：6.486-6.491   mm
NOGO PD：6.391-6.396 mm
M12×1.25-6g 21-816-S002GO PD：11.152-11.160   mm
NOGO PD：11.028-11.036 mm
M12×1.5-6g21-816-S003GO PD：10.986-10.994   mm
NOGO PD：10.854-10.862 mm
1/4-32UNEF-2A21-816-S004GO PD：0.2284-0.2287   inch
NOGO PD：0.2255-0.2258 inch
1.125-18UNEF-2A21-816-S005GO PD：1.0872-1.0875   inch
 NOGO PD：1.0828-1.0831 inch
3/8-12ACME-2G21-816-S006GO PD：0.3278-0.3284   inch
NOGO PD：0.3161-0.3167 inch
5/8-8 ACME-2G21-816-S007GO PD：0.5554-0.5562   inch
NOGO PD：0.5408-0.5416 inch

One more piece to really muddy the water is that the Tr-series has a 30° included angle, is also used for power transmission and has similar Stub and Centralizing options.

We can provide general-purpose ACME, Centralizing ACME, Stub-ACME thread ring & plug gauges, GO NOGO. We have many Standard ACME thread gages in stock

High Precision Trapezoidal Stub Acme Thread Plug Gauge Acme Thread Ring Gauge

Sowant Precision Gage Co.,Ltd located in Suzhou city nearby Shanghai ,about 70 kilometers away -a Leader of Chinese Gage Supplier, we can supply traditional gauges such as calipers, micrometers, dial gauges, indicators, height gauges, gauge blocks, Chinese made API Plug and Ring Gages (API Specification 5B, Chinese made API Specification 7-2, Chinese made API Specification 11B, Misc. Connections), Chinese made Cylindrical Gage, Chinese made Thread Gage, Chinese made Air Gage, Chinese made Spline Gage, Chinese made Hardness test blocks, Chinese made Ceramic Gages, but also covers high-technology measuring instruments like hardness tester, vision measuring machine and so on. Our products are mainly manufactured in China according to international standards with calibration report.Please do not hesitate to contact with us for the require of any Chinese made products.