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UNR and UNC UNF UNS all belong to United Threads ( also called American threads) , they have same basic thread style , thread-pitch series are also same .The difference is UNR’ external thread’ thread root designed should be plain arc connection,  thread roots of UNC UNF and UNS threads can be plain or inverted round randomly. Therefore，UNR threads just appear in  external threads , there is no internal UNR threads. Gaugestools, as a manufacturer of thread gauges, we just provide UNR thread ring gages for checking external threads. These days we produced many UNR ring gages. For example: 1” -8 UNR 3A more » ...

Thread plug gauges are used for checking female threads, which determine female threads are acceptable more » ...

It is a great news, Great company Watts and Apple bought gauges from us-gaugestools.com this more » ...

thread gauge Go / No Go ring gage set for 5/8″ – 20 buttress thread – for Class 2A part (Class X tolerance gage) 1 370 370 Go / No Go plug gage with handle for 5/8″- 20 – Buttress thread – for Class 2B part (Class X tolerance gage) 1 261 261 Go / No Go ring gage set for 11/16″ – 20 – buttress thread – for Class 2A part (Class X tolerance gage) 1 1 370 Go / No Go plug gage with handle for 11/16″ – 20 – buttress thread – for Class 2B part (Class X tolerance gage) 1 more » ...

Thread gauges are the most important thread checking tools and used in different industries like gas, more » ...

NPT—American National Standard Taper Pipe threads are widely used in pipe assembly , it is more » ...

All about British Thread Gauge BSP thread gauge basically can be divided into parallel BSP and more » ...

Thread gage manufacturers in modern times deal with all range of these products. Starting from thread more » ...

Here is a simple checking way for thread ring gauges and plug gages. First, Use more » ...

UNR thread form and UN thread form are basically same. There is just one point more » ...

Bosch is a great and famous company. we are very happy to announce that Bosch more » ...

gaugestools has a huge ranges of standard thread taps in stock,including Metric, United Inch (UN),Trapezoidal more » ...

It is easy to use thread gages, including thread ring gage and plug gauges. First, more » ...

A person new to the inspection and metrology of threaded parts finds a plethora of more » ...

gaugestools has a full line of fixed limit gages also called fixed limit gauges. Usually more » ...