4″-8 UN thread ring gauge GO & NOGO 2A USD 494
4″-8 UN thread plug gauge GO & NOGO 2B USD 300
Thread Form: UN
Ring gauges Tolerance: 2A 3A
Plug gauges Tolerance: 2B 3B
In stock, can be sent out same day!
Worldwide shipment，usually taking 3-4 days clients can receive goods.
The pictures are just for reference. As too many items in stock,
we haven’t taken pictures one by one.
If needed, one long form calibration certificate from professional third party testing lab
accredited to ISO/IEC 17025 can be supplied.
Each gage 100% calibrated with quality assurance.
These calibration certificates need extra cost, if clients need them,please tell in advance.
We are a professional manufacturer and supplier of thread ring gages and
Thread plug gauges, including GO/NOGO, RH/LH(right hand and left hand).
We have rich ranges of thread gauges, including UN, Metric, ACME, stub-ACME,
BSPP, BSPT, NPT, NPTF, Trapezoidal, and Whitworth etc.
We are committed to providing superior quality with excellent service in
short delivery time, We aim to build long-term customer relationships.
If clients need some special thread gauges, then our custom production service can be provided.
Usually plug gauges need ten days to finish, ring gages need two weeks to finish.
Check the full range of UN thread gage in stock
|Class of fit||External thread gauge(X Class)|
|Pitch diameter||Minor Diameter||Pitch diameter||Minor Diameter|
|4-8||UN||2A||3.9161 3.9156||3.8620 3.8613||3.9070 3.9075||3.8799 3.8806|
|4.000-8||3A||3.9188 3.9183||3.8647 3.8640||3.9120 3.9125||3.8849 3.8856|
|Internal thread gauge(X Class)|
|Major diameter||Pitch diameter||Major diameter||Pitch diameter|
|3.9188 3.9193||3.9848 3.9841||3.9307 3.9302|
We accept payment of T/T(bank transfer), Paypal, Credit Card, and West Union etc.