American_standard_thread_ring_gage
American_standard_thread_ring_gage

American Standard Thread Ring Gage No. 0 -6 UN

Simple Description:

  • Product Model: American Standard Thread Ring Gage
  • Range : No. 0 -6 UN
  • Standards: JB/T10865-2008
  • Material: GCr15.
  • Hardness : measuring surface is 58-65HRC.
  • The tolerance zone of the pitch diameter of the “go” end of the American Standard Unified Thread working plug gauge is compressed inward by a gauge manufacturing tolerance value, giving the “go” end of the thread plug gauge a wear allowance.

CUSTOM – MADE

    • We can supply other sizes of thread ring gages, for example, 1 1/4-16 UN LH
    • We provide thread ring gages with the following thread tolerance classes: 1A / 2A / 3A/ 2A-0.03 .
    • We also provide thread ring gauges of G series, RC series, PT series, RP series, NPT series, NPSM series, and etc. .
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Introduction to American Standard Unified Thread Ring Gauges

  1. Purpose of American Standard Unified Thread Ring Gauges: These are used for comprehensive inspection of American standard unified external threads as specified in ASME B1.1-2003 and GB/T 20666-20670-2006.
  2. Inspection Environment for American Standard Unified Thread Ring Gauges: The standard temperature is 20°C ± 1°C.
  3. Inspection of American Standard Unified Thread Ring Gauges: The go end (T) thread ring gauge is inspected using the checking plug gauges TT and TZ; the nogo end (Z) thread ring gauge is comprehensively inspected using the checking plug gauges ZT and ZZ.
  4. Usage Method of American Standard Unified Thread Ring Gauges: For the inspection of the external threads of products, the working ring gauges that have passed the inspection should be used, and for the inspection of the ring gauges, the checking plug gauges that have passed the inspection should be used. The working ring gauges should comply with the relevant provisions in the JB/T 10865 standard. To reduce disputes during inspection and acceptance, it is recommended that the manufacturer, the inspector and the acceptor use the same qualified gauges. When it is difficult to use the same qualified gauges:
    A. The manufacturer should preferably use new or less worn go end ring gauges and nogo end ring gauges that are close to the wear limit; the inspector and the acceptor should preferably use go end ring gauges that are close to the wear limit and new or less worn nogo end ring gauges.
    B. The acceptance of working ring gauges should be based on the checking plug gauges. The checking go-go or checking nogo-go gauges should be able to be screwed through the working ring gauges being inspected; the checking go-nogo or checking nogo-nogo gauges are allowed to be screwed into both ends of the nogo end ring gauges being inspected, but the amount of screwing in should not exceed one pitch (counting from the complete thread teeth). The working ring gauges in use are verified by the checking go-worn or checking nogo-worn gauges, and the amount of screwing in at both ends of the working ring gauges being inspected should not exceed one pitch.
    C. When disputes occur during verification, if the working ring gauge used to determine that the external thread of the product is qualified complies with the requirements of this regulation, then the external thread of the product being inspected should be judged as qualified.

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