Vermont Gage 361182010 Threaded Ring Gage 1-3/8-12 Unf 2A Go

Product Description

The VERMONT GAGE 361182010 is a Go-type threaded ring gage used to verify the external thread dimensions of 1-3/8-12 UNF fasteners and threaded components to Class 2A tolerance. The gage is machined from tool steel for dimensional stability and resistance to wear under repeated inspection cycles. It is a single-ring design, calibrated to NIST-traceable standards, and intended for use in quality control environments, machine shops, and manufacturing facilities where thread acceptance verification is required. Inspectors and machinists use Go ring gages to confirm that a male-threaded part will assemble correctly within the specified tolerance range.

This gage applies to 1-3/8-12 UNF external threads held to Class 2A tolerances, which represent the standard fit classification used in most general-purpose fastener and mechanical assembly applications. It is appropriate for incoming inspection, in-process quality checks, and final acceptance testing of threaded shafts, bolts, studs, and similar components. The Go condition confirms the thread will assemble with a mating Class 2B internal thread without interference.

Key Features

• Go-type ring gage confirms Class 2A external thread assembly acceptance
• Thread size: 1-3/8-12 UNF single-start thread form
• Single-ring construction for straightforward Go verification
• Machined from tool steel for long service life and dimensional stability
• Calibrated to NIST-traceable measurement standards

Compatibility

Designed for inspection of 1-3/8-12 UNF external threads to Class 2A tolerance. Used in conjunction with a No-Go ring gage for complete thread acceptance verification per standard thread gaging practice.

Installation Notes

Thread ring gages are inspection tools, not installation hardware. Handle with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Store in a protective case when not in use to prevent nicks or dimensional distortion. Periodic recalibration against NIST-traceable masters is recommended to maintain measurement integrity, especially in high-use environments.