NPTF 1/4″ thread gauge
1/4-18 NPTF ring plug gage
- DEC. : 0.25
- Frac.: 1/4″
- TPI: 18
In stock, can be sent out the next day.
Each 1/4″ NPTF thread gage 100% calibrated with quality assurance.
Standard: ANSI/ASME B1.20.5
NPTF 1/4″ thread’s basic size
1/4-18 P: 0.05556 L1=0.2278
External thread small end pitch diameter E0: 0.47739
Internal thread big end pitch diameter E1:0.49163
External thread big end pitch diameter E2:0.50250
Internal thread small end pitch diameter E3: 0.4670
1/4-18 NPTF thread gauge calibration certificate
If needed, one long form calibration certificate from professional third party testing lab accredited to ISO/IEC 17025 can be supplied. gaugesools also can provide UKAS certificates and NIST certificates if needed.These calibration certificates need extra cost, if clients need them,please tell in advance.
About us
gaugestools is 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,NPSM, Trapezoidal, and Whitworth etc.
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 clients need actual goods’s pictures, we are happy to take.
Check the full range of NPTF thread gage in stock
