Starrett 57501 A2 Tool Steel Flat Stock 3/32x1-1/4x18 in

Product Description

The STARRETT 57501 is an A2 air-hardening tool steel flat stock bar intended for toolmaking, die work, punches, gauges, and precision machining applications. Manufactured to AISI A2 material specification, this flat stock measures 3/32 inches thick, 1-1/4 inches wide, and 18 inches long, weighing 0.6 pounds. A2 tool steel offers good dimensional stability during heat treatment and resists distortion during air hardening, making it a reliable choice for tool and die makers who need consistent material performance before and after hardening operations.

This flat stock is suited for job shop, toolroom, and maintenance machining environments where A2 tool steel is specified. Typical applications include fabricating custom punches, dies, forming tools, fixtures, and gauging components. The 18-inch length provides enough stock for most small-to-medium tooling blanks, and the as-ground flat profile allows machinists to work directly from stock with minimal prep. It is sold individually and intended for professional tool and die makers, machinists, and precision metalworkers.

Key Features

• AISI A2 air-hardening tool steel — stable dimensional performance during heat treatment
• Tight thickness tolerance of plus or minus 0.001 inches for precision tooling applications
• Width tolerance of plus 0.000 to 0.005 inches for consistent stock sizing
• Length tolerance of plus 0.250 inches
• Square tolerance of plus or minus 0.001 inches
• Ready-to-machine flat stock profile — minimal prep required before layout or machining

Compatibility

Designed as a general-purpose A2 tool steel flat stock for toolroom and die shop use where AISI A2 air-hardening material is specified.

Installation Notes

Machining and heat treatment of A2 tool steel should be performed by qualified tool and die makers or machinists familiar with high-carbon alloy steels. Follow the material manufacturer's recommended hardening and tempering cycles for AISI A2 steel. Use appropriate personal protective equipment when cutting, grinding, or heat treating. Consult applicable shop safety standards before processing tool steel stock.