Spi 19-435-7 Class Zz Minus Plug Pin Gage 0.435 in

Product Description

The SPI 19-435-7 is a Class ZZ minus plug pin gage machined to a 0.435-inch nominal diameter with a tolerance of 0.0002 inches in the minus direction. Plug pin gages are precision measurement tools used to verify whether a hole or bore meets its dimensional specification. The Class ZZ designation indicates a working-grade gage intended for production floor use, where parts are being checked repeatedly during manufacturing or quality inspection cycles. Constructed from steel, the 19-435-7 delivers the hardness and dimensional stability required for consistent, reliable go/no-go or dimensional verification tasks. Machinists, quality technicians, and tool-and-die professionals are the primary users of this type of gage.

This plug pin gage is suited for use in machine shops, manufacturing facilities, and production environments where hole diameter verification is part of standard quality control workflow. It is used to check bored, drilled, or reamed holes in metal, plastic, or composite workpieces. The minus tolerance grind means the gage is manufactured slightly below nominal, following standard gage-making practice for go-type inspection members. At 0.435 inches nominal diameter, this gage fits a common range of precision-drilled and reamed hole sizes found in general machining and light industrial applications.

Key Features

• 0.435-inch nominal diameter for precise hole verification at that bore size
• Class ZZ working-grade tolerance for production floor inspection use
• Minus tolerance grind of 0.0002 inches following standard gage-making convention
• Steel construction provides hardness and wear resistance for repeated use
• Compact and lightweight at 0.2 pounds for easy single-hand operation

Compatibility

Designed as a working-grade Class ZZ plug pin gage for use in standard production inspection applications requiring verification of 0.435-inch nominal diameter bores.

Installation Notes

Plug pin gages are handled by quality technicians and machinists and require no permanent installation. Store the gage in its case or in a protected rack away from other tooling to prevent nicks or scoring on the gage surface. Clean the gage and the bore being checked before use to avoid false readings caused by chips, coolant, or debris. Handle with care to avoid dropping, as impact can alter the precision ground surface and render the gage out of tolerance.