Starrett 54561 A2 Tool Steel Flat Stock 5/32x2-1/2x36 in

Product Description

The STARRETT 54561 is an A2 air-hardening tool steel flat stock bar used in tool and die making, jig and fixture fabrication, and precision machining applications. This bar measures 5/32 inch thick, 2-1/2 inches wide, and 36 inches long, with a weight of 4.58 pounds. Tolerances are held to plus or minus 0.001 inch on thickness and squareness, plus 0.000 to 0.005 inch on width, and plus 0.25 inch on length. A2 tool steel offers excellent dimensional stability during air-hardening heat treatment, making it a reliable choice when tight post-heat geometry is required. Machinists, toolmakers, and die makers work with this material regularly in both production and maintenance-shop settings.

This flat stock is suited for fabricating cutting tools, punches, dies, gauges, and wear-resistant components in tool rooms and manufacturing facilities. Its ground and precision-toleranced surfaces reduce the amount of stock removal required before heat treatment, saving setup time. The 36-inch bar length accommodates a wide range of blank sizes commonly cut in tool and die operations. Edge squareness is held to 0.003 inch per inch across all edges, supporting consistent layout and machining from the stock condition.

Key Features

• A2 air-hardening tool steel for excellent dimensional stability through heat treat
• Thickness tolerance of plus or minus 0.001 inch for precision blank preparation
• Width tolerance of plus 0.000 to 0.005 inch for consistent stock allowance
• Edge squareness held to 0.003 inch per inch on all edges
• 36-inch length accommodates multiple blank cuts from a single bar
• Ships as a single bar with no minimum order beyond one piece

Compatibility

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

Installation Notes

Cutting and machining of tool steel flat stock should be performed by qualified toolmakers or machinists using appropriate metalworking equipment. Follow all applicable shop safety practices when sawing, milling, or grinding this material. Heat treatment, including hardening and tempering of A2 tool steel, should be carried out in a controlled atmosphere furnace or salt bath by personnel familiar with tool steel heat treatment procedures. Allow the workpiece to reach ambient temperature before performing finish grinding or precision measurement.