Spi 14-830-4 Chrome Steel Gage Ball 20mm Grade 25

Product Description

The SPI 14-830-4 is a hardened chrome steel gage ball used for precision measurement applications in industrial and trade settings. Measuring 20 mm in diameter, this ball meets Grade 25 accuracy standards and is AFBMA certified, making it suitable for use in gauging fixtures, go/no-go gauges, comparators, and other precision inspection tooling. The hardened chrome steel construction provides consistent geometry and surface finish critical to repeatable measurement results. Each package contains 2 balls. Installers, metrologists, and quality control technicians working with calibrated measurement equipment are the primary users.

This gage ball is designed for use in precision measurement and quality control environments where tight dimensional tolerances must be verified. Typical applications include fixture gauging, bore gauging, and reference standards in machine shops, manufacturing facilities, and inspection labs. The 20 mm diameter and Grade 25 accuracy classification make this ball appropriate for applications requiring high repeatability and low deviation from nominal size.

Key Features

• 20 mm diameter for precise dimensional gauging applications
• Grade 25 accuracy per AFBMA standards ensures tight tolerance conformance
• Hardened chrome steel construction for durability and surface consistency
• AFBMA certified for use in calibrated measurement workflows
• Package quantity of 2 balls per unit

Compatibility

Designed for use in standard precision gauging fixtures, comparators, and inspection tooling that accept 20 mm diameter gage balls conforming to AFBMA Grade 25 specifications.

Installation Notes

Gage balls should be handled with clean, dry gloves or lint-free cloths to prevent surface contamination that can affect measurement accuracy. Store in a protective case away from moisture and debris when not in use. Verify that the receiving fixture or gauge is rated for the ball diameter before use. Consult your metrology or quality control procedures for calibration interval requirements.