Starrett 57305 A2 Tool Steel Flat Stock 1/16x1.5x36 in

Product Description

The STARRETT 57305 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. Measuring 0.0625 inches thick, 1.5 inches wide, and 36 inches long, this flat stock is ground to close dimensional tolerances, making it suitable for fixtures, gauges, punches, and cutting tools. AISI A2 tool steel offers good wear resistance and dimensional stability during heat treatment, which is why it is a standard choice for toolroom and production shop use. Installation and machining are performed by tool and die makers, machinists, and maintenance professionals.

This flat stock is suited for fabricating custom tooling components, wear plates, blanks, and precision fixtures in both job shop and production environments. Its air-hardening grade reduces distortion during the hardening process compared to oil-hardening steels, making it practical for parts that require tight post-heat-treat dimensions. The 36-inch length accommodates a range of cutting and machining operations without additional joining.

Key Features

• AISI A2 air-hardening tool steel for reduced distortion during heat treatment
• Thickness tolerance of plus or minus 0.001 inches for consistent stock removal
• Width tolerance of plus 0.000 to 0.005 inches
• Length tolerance of plus 0.25 inches
• Squareness tolerance: edge, all 0.003 per inch
• Square tolerance of plus or minus 0.001 inches

Compatibility

Designed as a standard A2 air-hardening tool steel flat stock for general toolroom fabrication, die making, and precision machining applications where close dimensional tolerances are required.

Installation Notes

Cutting and machining of tool steel flat stock should be performed by qualified machinists or tool and die makers using appropriate metalworking equipment. Always use suitable cutting fluids and tooling rated for tool steel. When heat treating A2 steel, follow the material specification guidelines for austenitizing temperature, soak time, and air-cool procedure to achieve the intended hardness. Wear appropriate PPE when handling, cutting, or grinding tool steel.