Spi 19-982-8 Class Zz Minus Plug Pin Gage 0.9820 in

Product Description

The SPI 19-982-8 is a Class ZZ minus plug pin gage machined to a nominal diameter of 0.9820 inches with a tolerance of 0.0002 inches. Pin gages in this class are go/no-go inspection tools used to verify bore diameters, hole sizes, and slot widths to a defined dimensional standard. The minus designation means the gage is ground to the lower end of the tolerance range, which is standard practice for go-member gages used in production inspection. Constructed from steel, this gage delivers the rigidity and wear resistance required for repetitive use on the shop floor or in a quality-control lab. Machinists, tool-and-die makers, and QC inspectors rely on Class ZZ gages for general-purpose dimensional verification.

Class ZZ plug pin gages are the standard choice for general-purpose inspection of drilled, reamed, or bored holes in manufacturing and fabrication environments. This gage is suited for incoming inspection, in-process checks, and fixture qualification. It is appropriate for use in machine shops, production facilities, and metrology labs where moderate-precision hole verification is required. The 0.9820-inch nominal size targets bore applications in that diameter range across a broad range of materials and part geometries.

Key Features

• Nominal diameter of 0.9820 inches for precise bore and hole inspection
• Class ZZ tolerance class for general-purpose dimensional verification
• Minus designation ground to the lower tolerance boundary, standard for go-member gages
• 0.0002-inch tolerance for consistent, repeatable measurement results
• Steel construction provides durability and resistance to wear during repeated use

Compatibility

Designed as a general-purpose Class ZZ minus plug pin gage for dimensional inspection of holes and bores nominally sized at 0.9820 inches across standard manufacturing and quality-control applications.

Installation Notes

Pin gages are handled and stored by metrology technicians, machinists, and QC inspectors. Clean the gage and the bore being measured before use to remove chips, oil, or debris that could affect accuracy. Never force a plug gage into a hole; insertion should be smooth and without side loading to avoid damage to the gage or the workpiece. Store in a protective case away from other tooling to prevent nicking the ground surface.