Starrett 54589 A2 Tool Steel Flat Stock 1/8x1x18 in

Product Description

The STARRETT 54589 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, jig fabrication, and precision machining applications. The bar measures 0.125 inches thick, 1 inch wide, and 18 inches long, with a weight of 0.64 pounds. A2 tool steel offers excellent dimensional stability during heat treatment and good wear resistance, making it a reliable choice for punches, dies, gauges, and cutting tools. Thickness tolerance is held to plus or minus 0.001 inches, and square tolerance matches at plus or minus 0.001 inches, delivering the accuracy that precision toolroom work demands.

This flat stock is suited for toolroom, maintenance, and production environments where close-tolerance blanks are needed before final grinding or hardening. It is commonly used by tool and die makers, machinists, and maintenance technicians working in industrial, manufacturing, and job shop settings. The pre-cut 18-inch length reduces setup time when blanking out tool profiles, and the consistent cross-section supports accurate layout work straight from the stock.

Key Features

• A2 air-hardening tool steel construction for dimensional stability during heat treat
• Thickness of 0.125 inches with tolerance held to plus or minus 0.001 inches
• Width of 1 inch with tolerance of plus 0.000 to 0.005 inches
• Length of 18 inches with a plus 0.250 inch length tolerance
• Square tolerance of plus or minus 0.001 inches for accurate layout and grinding
• Single-piece packaging suitable for toolroom stock or spot replacement

Compatibility

Designed as a standard A2 air-hardening tool steel flat stock blank for use in toolroom, die, and jig fabrication applications requiring AISI Type A2 material specification.

Installation Notes

A2 tool steel flat stock is worked by qualified machinists and tool and die makers using conventional milling, grinding, and EDM equipment. Material should be handled with care to avoid surface nicks that can initiate stress risers during hardening. Heat treatment should follow AISI A2 guidelines for austenitizing temperature and air-quench procedure — consult a qualified heat treat facility or published material data before processing. Always wear appropriate PPE when cutting, grinding, or handling tool steel stock.