Starrett 54577 A2 Tool Steel Flat Stock 1/4x1x36 in

Product Description

The STARRETT 54577 is an A2 air-hardening tool steel flat stock bar intended for toolmaking, die making, and precision machining applications. Measuring 0.25 inches thick, 1 inch wide, and 36 inches long, this flat stock is produced to tight dimensional tolerances, with thickness held to plus or minus 0.001 inches and width held to plus 0.000 to 0.005 inches. The A2 tool steel designation indicates an air-hardening, cold-work alloy known for good wear resistance and dimensional stability during heat treatment. Machinists, toolmakers, and die shops install this material to produce punches, dies, gauges, and fixtures.

This flat stock is suited for job shops and tool rooms requiring ready-to-machine A2 stock in a standard bar length. The 36-inch length allows multiple blanks to be cut from a single piece, reducing material waste. The pre-ground, tight-tolerance profile reduces setup time compared to starting from rough bar stock. Edge squareness is held to 0.003 inches per inch across all edges, making it suitable for precision layout and close-tolerance tooling work in both prototype and production environments.

Key Features

• A2 air-hardening tool steel for good wear resistance and stable heat treatment dimensions
• Thickness tolerance of plus or minus 0.001 inches for precise fitment in close-tolerance applications
• Width tolerance of plus 0.000 to 0.005 inches
• Length tolerance of plus 0.25 inches from nominal 36 inches
• Edge squareness held to 0.003 inches per inch on all edges
• Single-piece packaging suitable for low-volume toolroom use

Compatibility

Designed as a standard A2 air-hardening tool steel flat stock suitable for use in toolmaking, die making, and precision machining applications where AISI A2 cold-work tool steel is specified.

Installation Notes

Cutting, grinding, and heat treatment of tool steel should be performed by a qualified machinist or toolmaker following established shop practices. Use appropriate personal protective equipment when cutting or grinding this material. Follow the material supplier and applicable industry guidelines for preheat, hardening, and tempering procedures specific to A2 tool steel. Ensure all cutting and grinding equipment is rated for tool steel work before machining.