Starrett 57567 A2 Tool Steel Flat Stock 5/32x4x18 in

Product Description

The STARRETT 57567 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. Made from AISI Type A2 tool steel, this flat stock measures 5/32 inches thick, 4 inches wide, and 18 inches long. It is supplied in an annealed, pre-hardened-ready condition that allows the material to be machined, ground, and then air-hardened to final hardness without oil quenching. Thickness, width, and square tolerances all run +0.010 to +0.015 inches, and length tolerance is +0.25 inches. Machinists and toolmakers working in job shops, tool-and-die operations, and precision fabrication facilities are the primary users of this stock.

A2 air-hardening flat stock is suited for applications requiring good dimensional stability during heat treatment, moderate toughness, and wear resistance. Typical uses include punches, dies, gauges, form tools, and wear plates in light to medium production environments. At 5/32 inches thick and 4 inches wide, this bar is a practical starting blank for thin die sections and small flat tooling components where controlled tolerances are necessary before grinding to final dimension.

Key Features

• AISI Type A2 tool steel — air-hardening grade with good dimensional stability during heat treat
• Flat stock dimensions: 5/32 inches thick, 4 inches wide, 18 inches long
• Thickness tolerance: +0.010 to +0.015 inches for consistent stock removal allowance
• Width tolerance: +0.010 to +0.015 inches
• Square tolerance: +0.010 to +0.015 inches
• Length tolerance: +0.25 inches

Compatibility

Designed as a standard-tolerance A2 tool steel flat bar for use in toolmaking, die making, and general precision machining applications where air-hardening tool steel stock is specified.

Installation Notes

Machining and grinding of A2 tool steel flat stock should be performed by qualified toolmakers or machinists using appropriate cutting fluids and abrasive wheels rated for tool steel. Heat treatment, including austenitizing and air-hardening, should be performed by a qualified heat treater following published A2 time and temperature parameters. Always allow stock to reach ambient temperature before precision grinding to final dimension. Follow applicable shop safety procedures when handling tool steel bar stock.