InSize 4810-602 60-Degree Center Gage Thread Setting Gauge

The InSize 4810-602 is a precision 60° center gage designed for machinists and toolmakers who need accurate setup and alignment of threading tools, lathe centers, and V-shaped cutting tools. With its hardened and ground steel construction, this center gage provides a reliable reference for checking and setting 60° thread angles — the standard angle used in Unified National (UN/UNC/UNF) and Metric (M) thread forms.

Key Features:

• 60° included angle for checking and aligning threading tools and lathe centers
• Hardened and precisely ground steel for long-lasting accuracy
• Compact, flat profile for easy use at the lathe or on the bench
• Multiple reference edges and notches for versatile tool-setting applications
• Suitable for setting both external and internal threading tools
• Manufactured to InSize quality standards for consistent, repeatable results

The InSize 4810-602 center gage is an essential hand tool for any machine shop or toolroom. It allows operators to quickly verify that threading inserts and single-point threading tools are ground to the correct 60° angle and properly aligned perpendicular to the workpiece axis, helping to produce accurate, on-spec threads with minimal setup time.