Starrett 57535 A2 Tool Steel Flat Stock 1/2x5/8x18 in

Product Description

The STARRETT 57535 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, jig construction, and precision machining applications. Measuring 0.5 inches thick by 0.625 inches wide by 18 inches long, this flat stock is manufactured to tight dimensional tolerances: plus or minus 0.001 inches on thickness and squareness, plus 0.000 to 0.005 inches on width, and plus 0.250 inches on length. A2 tool steel offers good wear resistance and dimensional stability during heat treatment, making it a reliable choice for tool and die makers working to close tolerances.

This flat stock is suited for fabricating punches, dies, gauges, and other precision tooling components in job shops, tool rooms, and manufacturing environments. The air-hardening characteristic of A2 minimizes distortion during hardening compared to oil-hardening grades, which is critical when maintaining part geometry after heat treat. Machinists and tool and die makers are the primary installers and fabricators of this material.

Key Features

• A2 air-hardening tool steel with minimal distortion during heat treatment
• Thickness: 0.5 inches with plus or minus 0.001 inch tolerance
• Width: 0.625 inches with plus 0.000 to 0.005 inch tolerance
• Length: 18 inches with plus 0.250 inch tolerance
• Squareness tolerance of plus or minus 0.001 inches
• AISI A2 material specification — suitable for dies, punches, and precision tooling

Compatibility

Designed as a standard A2 air-hardening tool steel flat stock bar suitable for use in tool and die fabrication, fixture building, and precision machining applications requiring close dimensional tolerances.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists or tool and die makers using appropriate equipment. A2 tool steel requires controlled heat treatment procedures — follow the material manufacturer's published hardening and tempering guidelines for this grade. Always wear appropriate PPE when cutting or grinding. Consult applicable shop safety codes and material safety data sheets before processing.