Osg 1500300405 Thread Limit Gage 8-32 Unjc 3B Go No-go

Product Description

The OSG 1500300405 is a double-end Go/No-Go thread limit gage designed to inspect 8-32 UN(J)C 3B internal threads to ASME dimensional standards. Built from high-speed steel with a titanium nitride (TiN) coating, this gage delivers the hardness and wear resistance required for accurate, repeatable thread verification in production and quality-control environments. The double-end design places the Go member on one end and the No-Go member on the other, eliminating the need for two separate tools. This unit ships pre-calibrated and ready for immediate use.

This gage is used in machine shops, manufacturing facilities, and inspection departments where 8-32 UNJC fastener threads must be verified against 3B tolerance specifications. It is appropriate for aerospace, defense, and general industrial applications where UNJC thread form requirements apply. Machinists, quality technicians, and inspection personnel use this tool as part of standard thread verification workflows for tapped holes and threaded components.

Key Features

• Double-end design integrates Go and No-Go members in a single tool
• TiN coating increases surface hardness and extends service life in high-cycle inspection use
• High-speed steel construction provides dimensional stability and resistance to wear
• Ships factory-calibrated for immediate use without additional setup
• 3B classification suits standard internal thread tolerance applications per ASME B1.2

Compatibility

Designed for inspection of 8-32 UN(J)C 3B internal threads. Suitable for use wherever 8-32 UNJC thread form verification is required per applicable ASME standards.

Installation Notes

Thread limit gages are inspection instruments, not cutting tools. Handle with care to avoid dropping or contact with abrasive surfaces, as damage to the gage members will affect measurement accuracy. Store in a protective case away from other tooling when not in use. Recalibration intervals should follow your facility quality management plan or applicable ISO/ANSI metrology standards.