Starrett 57337 A2 Tool Steel Flat Stock 0.25x0.75x36 in

Product Description

The STARRETT 57337 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. It measures 0.25 inches thick, 0.75 inches wide, and 36 inches long, weighing 2.2 pounds per piece. A2 tool steel offers good dimensional stability during heat treatment and solid wear resistance, making it a reliable choice for punches, dies, gauges, and similar toolroom components. Machinists and tool-and-die makers typically source this stock to fabricate custom tooling that will be hardened and finished to final dimensions.

This flat stock is suited for job shops, toolrooms, and maintenance departments that need accurately sized raw material ready for layout and machining. The bar arrives in the annealed condition, allowing standard machining before air-hardening heat treatment. Thickness and width tolerances are held tight from the mill, reducing setup stock removal and saving machine time on precision work.

Key Features

• AISI A2 air-hardening tool steel for excellent dimensional stability during hardening
• Thickness tolerance of plus or minus 0.001 inches for consistent stock removal
• Width tolerance of plus 0.000 to plus 0.005 inches
• Length tolerance of plus 0.25 inches
• Squareness held to 0.003 inches per inch on all edges
• Square tolerance of plus or minus 0.001 inches

Compatibility

Designed as a standard A2 tool steel flat bar for general toolroom, die-making, and precision machining applications requiring air-hardening material in this size.

Installation Notes

Cutting, grinding, and machining should be performed by qualified machinists or tool-and-die makers using appropriate cutting fluids and personal protective equipment. Heat treatment to full hardness requires controlled air-hardening furnace equipment and should follow the material manufacturer guidelines for A2 tool steel. Handle bar stock carefully to avoid nicks or burrs on the precision-ground surfaces, as surface damage can affect tolerance performance in the finished tool.