Spi 19-541-2 Class Zz Minus Plug Pin Gage 0.541 in

Product Description

The SPI 19-541-2 is a Class ZZ minus plug pin gage machined from steel, designed to verify bore diameters and hole tolerances in production and inspection environments. With a nominal diameter of 0.541 inches and a tolerance of 0.0002 inches, this gage provides reliable go/no-go measurement for quality control workflows. Class ZZ gages are the standard working-grade choice for shop-floor inspection, balancing accuracy with durability under repeated use. Machinists, toolmakers, and quality technicians use plug pin gages like this one to confirm that drilled, reamed, or bored holes fall within specified limits before parts advance in the manufacturing process.

This gage is suited for use in machine shops, production facilities, and inspection departments where precise hole diameter verification is required. The 0.541-inch size addresses common bore specifications encountered in general machining, fixture building, and component assembly. It is handled as a single gage unit and is appropriate for both high-volume repetitive checks and one-off inspection tasks. The steel construction holds up to the demands of a working shop environment without sacrificing dimensional stability.

Key Features

• Class ZZ minus tolerance rating — standard working-grade for shop-floor go/no-go inspection
• 0.541-inch nominal diameter for precise bore and hole verification
• 0.0002-inch tolerance for reliable dimensional control
• Steel construction for durability and dimensional stability under repeated use
• Single-piece unit — no assembly required, ready for immediate use

Compatibility

Designed as a working-grade Class ZZ minus plug gage for use with standard gage handle sets and gage blocks in shop-floor and inspection department applications.

Installation Notes

Plug pin gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion from skin contact. Store the gage in a protective case or holder when not in use to avoid damage to the gaged surface. Verify the gage is at ambient temperature before use, as thermal expansion can affect measurement accuracy. Periodic recalibration against traceable standards is recommended to maintain accuracy over the service life of the gage.