Starrett 54557 A2 Tool Steel Flat Stock 5/32x1x36 in

Product Description

The STARRETT 54557 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. It measures 5/32 inch thick, 1 inch wide, and 36 inches long, with a weight of 1.83 pounds. Manufactured from AISI A2 tool steel, it offers good dimensional stability during heat treatment and is well suited for applications requiring tight tolerances. Thickness and squareness tolerances are held to plus or minus 0.001 inch, making this bar appropriate for precision tool and die fabrication. Licensed machinists, tool and die makers, and metalworking shops are the primary installers and users of this material.

This flat stock is used in the fabrication of punches, dies, gauges, and cutting tools across light manufacturing and precision machining environments. A2 air-hardening tool steel is a common choice for toolroom applications where dimensional consistency after hardening is critical. The 36-inch length provides sufficient stock for most toolroom cutting operations without excessive waste. Width tolerance is held to plus 0.000 to 0.005 inch, and length tolerance is plus 0.25 inch.

Key Features

• AISI A2 air-hardening tool steel for dimensional stability during hardening
• Thickness tolerance of plus or minus 0.001 inch for precision fitment
• Width tolerance of plus 0.000 to 0.005 inch
• Squareness held to 0.003 inch per inch on all edges
• Length tolerance of plus 0.25 inch on 36-inch bar
• Ready-to-use flat stock format reduces pre-machining setup time

Compatibility

Designed as a standard AISI A2 air-hardening tool steel flat bar suitable for general toolroom and die-making fabrication applications where A2 material specification is required.

Installation Notes

Cutting and machining of A2 tool steel flat stock should be performed by qualified machinists or tool and die makers using appropriate metalworking equipment. Follow established heat-treatment procedures for A2 air-hardening steel when hardening is required; improper heat treatment can result in distortion or cracking. Wear appropriate personal protective equipment when cutting or grinding. Consult the material data sheet for specific heat-treat parameters before processing.