Starrett 57310 A2 Tool Steel Flat Stock 3/32x1/2x36 in

Product Description

The STARRETT 57310 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, fixture building, and precision machining applications. Manufactured to AISI A2 specification, this flat stock measures 0.09375 inches thick, 0.5 inches wide, and 36 inches long, with a weight of 0.55 pounds. A2 tool steel offers excellent dimensional stability during heat treatment and good wear resistance after hardening, making it a reliable choice for punches, dies, gauges, and custom tooling components. Tight tolerances are held throughout: thickness tolerance is plus or minus 0.001 inches, width tolerance is plus 0.000 to 0.005 inches, and length tolerance is plus 0.25 inches.

This flat stock is suited for machine shops, tool and die shops, and maintenance departments that require precision-ground raw stock ready for layout, machining, and subsequent air-hardening heat treatment. The 36-inch length provides a practical working blank for most bench and mill operations. It is commonly used by tool and die makers, machinists, and maintenance technicians fabricating or replacing worn tooling components in both production and job-shop environments.

Key Features

• AISI A2 air-hardening tool steel for stable, low-distortion heat treatment
• Thickness: 0.09375 inches with plus or minus 0.001 inch tolerance
• Width: 0.5 inches with plus 0.000 to 0.005 inch tolerance
• Length: 36 inches with plus 0.25 inch tolerance
• Squareness: edge squareness held to 0.003 inches per inch on all edges
• Ready for layout, machining, and air-hardening without pre-treatment

Compatibility

Designed as a general-purpose A2 tool steel flat stock blank suitable for toolmaking, die making, fixture fabrication, and precision machining applications requiring air-hardening material.

Installation Notes

Machining and heat treatment of tool steel should be performed by qualified machinists or tool and die makers familiar with A2 material requirements. Follow appropriate shop safety practices when cutting, grinding, or milling tool steel, including use of proper personal protective equipment. Heat treatment should be performed according to AISI A2 specifications by a qualified heat treater. Always allow the stock to reach ambient temperature before taking final measurements.