Starrett 56508 A2 Tool Steel Flat Stock 5/8 X 5/8 X 36 in

Product Description

The STARRETT 56508 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who require tight-tolerance raw material for cutting tools, punches, dies, and fixtures. Manufactured to AISI A2 specifications, this flat stock measures 0.625 inches thick by 0.625 inches wide by 36 inches long and weighs 4.58 pounds. A2 tool steel offers excellent dimensional stability during air hardening, making it a reliable choice for precision tooling applications where distortion after heat treatment must be minimized.

This flat stock is suited for job shops, tool and die shops, and maintenance departments in both light and heavy industrial environments. The 36-inch length provides enough material for multiple tool blanks from a single piece. Typical applications include punch and die components, gauges, forming tools, and general-purpose tooling where a balance of wear resistance and toughness is needed. The close width and thickness tolerances make this stock ready for layout and machining with minimal prep work.

Key Features

• AISI A2 air-hardening tool steel for minimal distortion during heat treatment
• Thickness tolerance of plus or minus 0.001 inches for precise stock removal planning
• Width tolerance of plus 0.000 to 0.005 inches for consistent fit in tooling layouts
• Length tolerance of plus 0.25 inches ensures full usable length on every piece
• Square tolerance of plus or minus 0.001 inches with edge squareness of 0.003 inches per inch
• Single-piece packaging with no minimum order above one unit

Compatibility

Designed as a standard AISI A2 air-hardening tool steel flat stock suitable for use in any application calling for A2 material in the 5/8-inch square cross-section profile.

Installation Notes

Machining and grinding of A2 tool steel flat stock should be performed by qualified toolmakers or machinists using appropriate cutting fluids and tooling rated for hardened or semi-hardened steel. Heat treatment, including hardening and tempering, should follow AISI A2 specifications and be performed by personnel familiar with tool steel processing. Always wear appropriate PPE when cutting, grinding, or heat-treating tool steel. Secure the workpiece properly before any machining operation to prevent movement.