Vermont Gage 451000000 Pipe Thread Ring Gauge

Product Description

The VERMONT GAGE 451000000 is an L-2 tapered pipe thread ring gauge designed for checking external NPTF pipe threads. It is built to the L2 thread class standard and covers a 1/8 inch-27 thread size. This gauge performs L-1, L-2, and 6-step tolerance checks on external tapered pipe threads, making it a reliable inspection tool for quality control in plumbing, pipefitting, and machining applications. Machinists, pipe fabricators, and quality inspectors use this type of gauge to verify that threaded fittings and pipe ends conform to NPTF standards before assembly or installation.

This ring gauge is suited for production floor and shop inspection environments where NPTF external thread conformance must be verified. It is applicable to 1/8 inch-27 tapered pipe threads, which are commonly found in small-diameter fittings, instrumentation ports, and hydraulic or pneumatic line connections. The L-2 designation indicates it is used in the second-step inspection stage of the NPTF gauging process.

Key Features

• Performs L-1, L-2, and 6-step tolerance checks on external tapered pipe threads
• Built to L2 thread class for NPTF gauging requirements
• Covers 1/8 inch-27 thread size
• Tapered ring gauge design for accurate external thread inspection
• Suitable for production quality control and incoming inspection use

Compatibility

Designed for use with 1/8 inch-27 NPTF external tapered pipe threads in accordance with L2 thread class gauging standards.

Installation Notes

This gauge is a precision inspection tool and does not require permanent installation. Handle with care to avoid damage to the gauging surfaces, which can affect accuracy. Clean threads thoroughly before gauging to remove chips, burrs, or contaminants. Store in a protective case when not in use to preserve calibration integrity.