Starrett 57619 A2 Tool Steel Flat Stock 5/8 X 1-1/4 X 18 in

Product Description

The STARRETT 57619 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who require a reliable, dimensionally consistent material for fabricating punches, dies, gauges, and similar tooling components. This bar measures 0.625 inches thick, 1.25 inches wide, and 18 inches long, with a shipping weight of 3.99 pounds. A2 tool steel offers good wear resistance and dimensional stability during heat treatment, making it a standard choice where moderate toughness and through-hardening are required. Thickness, width, and square tolerances are held to plus 0.010 to 0.015 inches, with a length tolerance of plus 0.25 inches.

This flat stock is suited for machine shop, toolroom, and die shop applications in both job shop and production environments. It is typically used to manufacture custom tooling, fixtures, blades, and wear parts that require subsequent machining, grinding, and heat treatment. The 18-inch length allows for single-piece blanks or multiple shorter workpieces depending on the application. Licensed machinists, tool and die makers, and industrial fabricators are the primary users of this material.

Key Features

• A2 air-hardening tool steel per AISI Type A2 material specification
• Dimensions: 0.625 inches thick x 1.25 inches wide x 18 inches long
• Thickness tolerance: plus 0.010 to 0.015 inches
• Width tolerance: plus 0.010 to 0.015 inches
• Square tolerance: plus 0.010 to 0.015 inches
• Length tolerance: plus 0.25 inches

Compatibility

Designed as a standard A2 air-hardening tool steel flat stock blank suitable for toolroom and die shop applications requiring AISI A2 material specification.

Installation Notes

Material should be machined prior to heat treatment to final near-net dimensions, then air-hardened by a qualified heat treater following AISI A2 tool steel procedures. Always use appropriate personal protective equipment when cutting, grinding, or machining tool steel. Secure the workpiece firmly in a vise or fixture before any machining operation to prevent movement and ensure dimensional accuracy.