Spi 616-62082 Class Zz Plug Gage Set 101 Piece

Product Description

The SPI 616-62082 is a Class ZZ double-end plug gage set designed for precision hole measurement in machining, inspection, and quality-control applications. The set covers a diameter range of 0.2756 to 0.3150 inches (7.000 to 8.00 mm) with a bilateral tolerance of plus or minus 0.002000 inches. Constructed from steel, each gage member is double-ended for efficient go and no-go inspection in a single tool. With 101 pieces covering the full range in incremental steps, this set gives inspectors and machinists broad coverage without switching sets. Machinists, toolroom technicians, and quality-control inspectors use it for in-process and final inspection of drilled, reamed, or bored holes.

This plug gage set is suited for toolrooms, production floors, and inspection departments working with components that require close-tolerance bore verification in the 0.2756 to 0.3150 inch diameter range. The double-end design allows a single gage to serve as both a go and no-go check, reducing handling time during high-volume inspection runs. Both inch and metric diameter references are provided, making the set practical in shops that work to either standard.

Key Features

• 101-piece set covers 0.2756 to 0.3150 inches (7.000 to 8.00 mm) in incremental steps
• Class ZZ tolerance grade rated at plus or minus 0.002000 inches bilateral
• Double-end design combines go and no-go members in a single gage body
• Steel construction for durability in production and toolroom environments
• Dual inch and metric diameter references on each member

Compatibility

Designed as a standard Class ZZ plug gage set for general-purpose go and no-go hole inspection in the 0.2756 to 0.3150 inch diameter range.

Installation Notes

Plug gages are installed and used by machinists, toolroom technicians, and quality-control inspectors — no licensed trade certification is required, but familiarity with gage-handling best practices is recommended. Clean and deburr the bore before inserting any gage member to avoid damage to the gage or workpiece. Store the set in its case when not in use to protect the gage members from corrosion and mechanical damage. Handle steel gages with clean dry hands or lint-free gloves to prevent surface oxidation from skin contact.