1 3/8-18 UNEF thread gage ring | plug gauge GO & NOGO

1 3/8"-18 UNEF thread ring gauge1 3/8-18 UNEF thread plug gauge

1 3/8-18 UNEF thread ring gauge GO & NOGO 2A

1 3/8″-18 UNEF thread plug gauge GO & NOGO 2B


Fraction: 1 3/8″



Thread Form: UNEF

Ring gauges Tolerance: 2A 3A

Plug gauges Tolerance:2B 3B

Order online

1 3/8-18 UNEF 2A ring gauge GO&NOGO US$172


1 3/8-18 UNEF 2A ring gauge GO&NOGO with long form calibration certificate US$222


1 3/8-18 UNEF 2B plug gauge GO&NOGO US$81


1 3/8-18 UNEF 2B plug gauge GO&NOGO with long form calibration certificate US$121


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 committed to providing superior quality with excellent service in

short delivery time, We aim to build long-term customer relationships. 


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. 


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 UNEF thread gage in stock


We accept payment of T/T(bank transfer), Paypal, Credit Card, and West Union etc.


best qualityexpress delivery