NPTF 1 1/4″ thread gage-1 1/4-11.5 NPTF ring plug gauge

1 1/4" NPTF thread gauges

NPTF 1 1/4″ thread gauge

1 1/4-11 1/2 NPTF ring plug gage

  • DEC. : 1.25
  • Frac.: 1 1/4″
  • TPI: 11.5

In stock, can be sent out the next day.

Each 1 1/4″ NPTF thread gage 100% calibrated with quality assurance.

Standard: ANSI/ASME B1.20.5

NPTF 1 1/4″ thread’s basic size

1 1/4-11.5  P: 0.08696  L1=0.4200

External thread small end pitch diameter E0: 1.55713

Internal thread big end pitch diameter E1: 1.58338

External thread big end pitch diameter E2: 1.60130

Internal thread small end pitch diameter E3: 1.5408

1 1/4-11 1/2 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

NPTF 1 1/4" thread gage1 1/4-11.5 NPTF ring plug gauge