Starrett 57571 A2 Tool Steel Flat Stock 3/16 X 3/16 X 18 in

Product Description

The STARRETT 57571 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. Measuring 0.1875 inches thick by 0.1875 inches wide by 18 inches long, this piece is supplied in the annealed condition ready for machining before heat treat. A2 tool steel offers a balanced combination of wear resistance and toughness with moderate dimensional stability during air-hardening cycles, making it a reliable choice for punches, dies, gauges, and similar toolroom components. Licensed machinists, tool and die makers, and industrial maintenance technicians are the primary users of this material.

This flat stock is suited for light-section tooling applications in both job shop and production toolroom environments. The small cross-section makes it appropriate for thin punches, blades, small forming dies, and custom fixture components where close dimensional tolerances are required prior to final grinding. The piece ships as a single 18-inch length, allowing the user to cut to final length as the application demands.

Key Features

• A2 air-hardening tool steel for good dimensional stability during heat treatment
• Thickness and width held to a close tolerance of plus 0.010 to 0.015 inches for predictable stock removal during finishing
• Length tolerance of plus 0.25 inches allows for facing and cut-to-length operations
• Square tolerance of plus 0.010 to 0.015 inches supports consistent setup and fixturing
• Single 18-inch length with no minimum order beyond one piece

Compatibility

Designed as a standard toolroom flat stock bar suitable for fabrication of punches, dies, blades, and precision tooling components machined from AISI A2 air-hardening tool steel.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists or tool and die makers using appropriate cutting fluids and personal protective equipment. All heat-treating operations, including hardening and tempering of A2 tool steel, should follow established metallurgical procedures and be performed with proper equipment. Deburr all edges after cutting to prevent handling injuries. Verify final dimensions after machining and prior to heat treatment, as dimensional changes occur during the hardening cycle.