Spi 19-533-9 Class Zz Minus Plug Pin Gage 0.533 in

Product Description

The SPI 19-533-9 is a Class ZZ minus plug pin gage machined from steel and used to verify that a bored or drilled hole falls within its lower tolerance boundary. Measuring 0.533 inches in diameter with a tolerance of 0.000200 inches, this gage provides the close dimensional control that machinists, toolmakers, and quality-control technicians require for go/no-go inspection work. Class ZZ gages are the standard choice for production-floor inspection of general-purpose holes where tight but achievable tolerances are specified. The minus designation means the gage is manufactured to the lower end of the nominal size, consistent with standard plug gage practice for checking minimum hole size.

This pin gage is suited for use in machine shops, manufacturing facilities, and quality-inspection departments where repetitive hole gauging is performed. It is appropriate for checking drilled, reamed, or bored holes in metal, plastic, or composite workpieces. The 0.533-inch diameter targets mid-range hole sizes commonly found in fixture, jig, and general mechanical component production. Inspection personnel and toolroom machinists are the primary users in both job-shop and high-volume production environments.

Key Features

• Class ZZ tolerance grade suitable for general-purpose production inspection
• Minus designation for checking the lower boundary of hole tolerance
• 0.533-inch nominal diameter with 0.000200-inch tolerance for precise gauging
• Steel construction for durability and dimensional stability under repeated use
• Compact, single-piece design for easy handling during inspection

Compatibility

Designed as a standard Class ZZ minus plug pin gage for general-purpose go/no-go hole inspection applications where a 0.533-inch nominal diameter is specified.

Installation Notes

Plug pin gages are handled and used by quality-control technicians and toolroom personnel, not installed in a system. Clean the gage and the workpiece hole before each measurement to prevent debris from affecting results. Store the gage in its case or a protected location away from other metal tools to prevent surface damage. Handle with care to avoid dropping, which can alter the gage diameter and render measurements unreliable.