Spi 98-720-6 Rockwell C Hardness Testing File Set 6 Pc

Product Description

The SPI 98-720-6 is a six-piece hardness testing file set calibrated to the Rockwell C scale, covering a hardness range of 40 RC to 65 RC. Each file in the set represents a specific hardness value within that range, allowing technicians and machinists to perform quick, comparative hardness checks on metal workpieces without the need for a dedicated bench-top tester. The set is designed for use with most bench-type Rockwell and Rockwell Superficial type hardness testers. At 1 pound, the set is compact and practical for shop floor or toolroom use.

This file set is used in metalworking, tool and die, machining, and quality control environments where fast hardness verification is required. It is particularly useful for checking heat-treated steel components, hardened tooling, and similar ferrous materials that fall within the 40 RC to 65 RC range. The set suits metrology labs, production floors, and maintenance shops where portable or supplemental hardness checking is part of the workflow.

Key Features

• Six-piece set covering 40 RC to 65 RC on the Rockwell C scale
• Compatible with most bench-type Rockwell and Rockwell Superficial type hardness testers
• Enables comparative hardness verification without a dedicated testing instrument
• Compact and lightweight at 1 pound for easy storage and transport
• UNSPSC Code 41114600 for procurement and catalog classification

Compatibility

Designed for use with most bench-type Rockwell and Rockwell Superficial type hardness testers.

Installation Notes

This file set is a hand-use calibration and testing accessory, not a component that is installed in a system. Handle files carefully to avoid damage to calibrated surfaces, as nicks or corrosion can affect hardness readings. Store in the provided case or a dry environment to maintain calibration integrity. Consult your hardness tester manufacturer guidelines for proper file testing procedure.