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Steel pipe ring gage, uncoated finish, 1-1/2"-11.5 size

Vermont Gage

Vermont Gage 441104010 Pipe Ring Gage 1-1/2"-11.5 measurement tool

SKU CH-DYEF-5P8SF

Pipe ring gauge with 1-1/2"-11.5 NPT threads, tool steel construction, hardness RC 60-62, and NIST-traceable certificate of accuracy

  • Precision NPT threading verified by ASME B1.20.1 standard
  • Hardened tool steel construction withstands repeated inspection cycles
  • RC 60-62 hardness maintains gauge accuracy over time
  • NIST-traceable Certificate of Accuracy included for quality assurance
  • 1-1/2"-11.5 L-1 ring gauge fits standard pipe thread inspection

Vermont Gage 441104010 Pipe Ring Gage

The Vermont Gage 441104010 is a precision pipe ring gage designed for verifying NPT threads on 1-1/2"-11.5 fittings. It serves machinists, quality technicians and maintenance crews who must confirm thread compliance before assembly. The gage is manufactured from tool steel hardened to RC 60-62 for consistent wear resistance. It arrives with a Certificate of Accuracy traceable to NIST but without a long-form calibration certificate.

Replaces worn or missing L-1 ring gages

This gage replaces an L-1 ring gage that has exceeded its tolerance band or been lost from a calibration set. The upgrade is justified when thread inspection requires documented NIST traceability to ASME B 1.20.1 Class X tolerance. It is not suited for buyers who need a long-form calibration certificate or who work with thread forms other than NPT.

Holds tolerance through repeated checks

Under sustained shop use the tool steel body maintains RC 60-62 hardness so the pitch diameter stays within Class X limits across many inspections. The uncoated finish avoids plating buildup that could mask thread errors. The gage is not intended for automated high-cycle loading where a carbide master might be preferred.

Highlights

  • Precision NPT threading verified by ASME B1.20.1 standard
  • Hardened tool steel construction withstands repeated inspection cycles
  • RC 60-62 hardness maintains gauge accuracy over time
  • NIST-traceable Certificate of Accuracy included for quality assurance
  • 1-1/2"-11.5 L-1 ring gauge fits standard pipe thread inspection

Specifications

BrandVERMONT GAGE

Questions about this item

What thread size and pitch does the Vermont Gage 441104010 ring gauge check?

The gauge inspects 1-1/2"-11.5 NPT pipe threads to ASME B 1.20.1 tolerance Class X.

How do I install the gauge on the pipe thread without damaging the tool steel surfaces?

Apply light oil, start the ring by hand square to the axis, and turn until firm resistance — never force it with a wrench.

When should I send the gauge for recalibration and what certification will it return with?

Recalibrate annually or after heavy use; it returns with a Certificate of Accuracy bearing NIST traceability.

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