Starrett 57343 A2 Tool Steel Flat Stock 3/8x3/8x36 in

Product Description

The STARRETT 57343 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. Measuring 0.375 inches thick by 0.375 inches wide by 36 inches long, this flat stock is produced from AISI Type A2 tool steel and held to tight dimensional tolerances throughout. Thickness and squareness tolerances are both held to plus or minus 0.001 inches, making this bar suitable for applications where fitment and dimensional consistency are critical. Width tolerance is plus 0.000 to 0.005 inches, and length tolerance is plus 0.25 inches. The bar weighs 1.64 pounds and ships as a single-piece unit.

A2 tool steel flat stock is used by tool and die makers, machinists, and maintenance professionals who need stock material for punches, dies, blades, gauges, and similar precision-ground or hand-fitted components. Air-hardening A2 tool steel offers good dimensional stability during heat treatment compared to oil-hardening grades, which makes it a preferred choice when distortion control after hardening is a priority. This bar is supplied in the annealed condition and is ready for machining, grinding, and subsequent heat treatment by a qualified tool room or heat treating operation.

Key Features

• AISI Type A2 air-hardening tool steel for good stability during heat treatment
• Thickness tolerance of plus or minus 0.001 inches for precise fitment
• Width tolerance of plus 0.000 to 0.005 inches
• Squareness tolerance of plus or minus 0.001 inches; edge squareness 0.003 inches per inch
• Length tolerance of plus 0.25 inches on 36-inch nominal length
• Single-piece packaging at 1.64 pounds net weight

Compatibility

Designed as a standard A2 air-hardening tool steel flat stock bar suitable for general tool room, die making, and precision machining stock applications where AISI A2 material specification is required.

Installation Notes

Machining and grinding of A2 tool steel flat stock should be performed by qualified tool room personnel using appropriate cutting fluids and tooling rated for tool steel. Heat treatment, including hardening and tempering, must follow established procedures for AISI A2 air-hardening steel and should be performed by a qualified heat treater to achieve target hardness without distortion. Always allow the bar to reach ambient temperature before taking final measurements. Follow applicable shop safety practices for handling and storing tool steel bar stock.