Spi 29-201-1 Class Zz Plus Plug Gage 0.201 in

Product Description

The SPI 29-201-1 is a Class ZZ Plus plug gage designed to verify hole diameters with precision in production and inspection environments. Built to a 0.201-inch nominal diameter with a tolerance of 0.0002 inches, this gage provides the dimensional accuracy required for go/no-go inspection workflows. Constructed from steel, it delivers durability suited to repeated shop-floor use. Machinists, quality technicians, and toolroom professionals rely on Class ZZ plug gages for high-volume inspection of drilled, reamed, or bored features where consistent dimensional conformance is critical.

This gage is appropriate for use in machine shops, manufacturing facilities, and inspection departments handling small-diameter hole verification. It suits applications where a 0.201-inch diameter hole must be confirmed to tight tolerances before a part advances to the next stage of production. The compact form factor and light weight make it practical for bench inspection and inline quality checks on both ferrous and non-ferrous workpieces.

Key Features

• 0.201-inch nominal diameter for precise small-hole inspection
• 0.0002-inch tolerance meets Class ZZ Plus gage accuracy requirements
• Steel construction for durability and resistance to wear during repeated use
• Lightweight at 0.01 pounds, suitable for extended handheld inspection work
• Single-piece packaging, sold individually

Compatibility

Designed as an OEM-style replacement or direct-use plug gage for standard Class ZZ Plus applications requiring a 0.201-inch diameter inspection gage in steel construction.

Installation Notes

Plug gages are handled and used by quality technicians and machinists and require no installation in the traditional sense. Before use, clean the gage and the hole being inspected to remove chips, coolant, or debris that could affect measurement accuracy. Store the gage in a protective case away from other tooling to prevent surface damage. Do not force a plug gage into an undersized hole, as this can damage the gage surface and compromise calibration.