Starrett 57497 A2 Tool Steel Flat Stock 1/16x4x18 in

Product Description

The STARRETT 57497 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. Ground to close tolerances, this flat stock measures 1/16 inch thick, 4 inches wide, and 18 inches long, with a thickness tolerance of plus or minus 0.001 inches and a square tolerance of plus or minus 0.001 inches. At 1.25 pounds, it is suited for shop fabrication of punches, dies, gauges, and similar hardened components. AISI A2 tool steel offers good dimensional stability during air-hardening heat treatment, making it a reliable choice for precision toolroom work.

This flat stock is intended for trade use in tool and die shops, maintenance machining environments, and industrial fabrication settings. It arrives in an annealed condition ready for machining, then can be air hardened to service hardness by a qualified heat treater. The 18-inch length and 4-inch width provide sufficient stock for a range of small to medium toolroom components. Typical users include tool and die makers, machinists, and maintenance technicians who require tight-tolerance steel bar stock for custom tooling builds.

Key Features

• AISI A2 air-hardening tool steel for good dimensional stability during heat treatment
• Thickness tolerance of plus or minus 0.001 inches for precision fitment
• Width tolerance of plus 0.000 to minus 0.005 inches
• Length tolerance of plus 0.250 inches
• Square tolerance of plus or minus 0.001 inches
• Ships at 1.25 pounds, suitable for bench and manual machining setups

Compatibility

Designed as a standard-format A2 tool steel flat stock bar for general toolroom and die-making applications requiring air-hardening steel in this size range.

Installation Notes

Machining and heat treatment of tool steel should be performed by qualified machinists or tool and die makers following applicable shop safety procedures. Material should be machined in the annealed condition before hardening. Air-hardening heat treatment requires a controlled atmosphere or appropriate protective measures to prevent decarburization and should be performed according to the steel supplier's published heat treat guidelines. Always wear appropriate PPE when cutting, grinding, or handling steel stock.