Value Collection 616-81206 Class Zz Plug Gage Set 250 Pc

Product Description

The VALUE COLLECTION 616-81206 is a 250-piece Class ZZ plug gage set covering a diameter range of 0.251 to 0.500 inches. Each gage in the set carries a plus tolerance of 0.0002 inches, conforming to Class ZZ specifications for go/no-go inspection of drilled, reamed, or bored holes. Class ZZ is the standard working-grade tolerance class used for general-purpose inspection in production environments. At 22 pounds for the full set, this is a substantial kit intended for shop use by machinists, quality technicians, and tool-and-die professionals who need complete coverage across a wide range of hole sizes without sourcing individual gages.

This plug gage set is suited for dimensional inspection work in machine shops, manufacturing facilities, and toolrooms. The 0.251 to 0.500 inch range covers common fractional and decimal hole sizes encountered in general metal fabrication, fixture building, and component inspection. The set is appropriate for both incoming inspection and in-process quality control on production floors where consistent hole tolerance verification is required. Technicians use sets of this type to verify that drilled or reamed holes fall within print tolerance before parts advance to assembly.

Key Features

• 250-piece set covers 0.251 to 0.500 inch diameter range in fine increments
• Class ZZ tolerance rating at plus 0.0002 inches per gage
• Plus tolerance type for go-side and no-go-side inspection applications
• Full set weight of 22 pounds indicates substantial, shop-grade construction
• Single-package quantity allows procurement as a complete inspection kit

Compatibility

Designed as a general-purpose Class ZZ plug gage set for go/no-go hole inspection across a 0.251 to 0.500 inch diameter range, compatible with standard gage-handle holders sized for plug gages in this diameter class.

Installation Notes

Plug gages should be handled by quality technicians or machinists familiar with dimensional metrology practices. Store gages in their designated slots or holders to prevent nicking the gage surfaces, as surface damage will invalidate measurements. Clean and lightly oil gages before storage to prevent corrosion. Periodic re-calibration against a traceable standard is recommended to verify gage wear has not moved individual members outside tolerance.