Starrett 57507 A2 Tool Steel Flat Stock 1/8x5/8x18 in

Product Description

The STARRETT 57507 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who require a precision-ground, ready-to-use blank for fabricating punches, dies, gauges, and similar tooling components. Measuring 0.125 inches thick, 0.625 inches wide, and 18 inches long, this flat stock ships to close tolerances: plus or minus 0.001 inches on thickness and square, plus 0.000 to 0.005 inches on width, and plus 0.250 inches on length. AISI A2 tool steel offers good wear resistance and dimensional stability through the air-hardening process, making it a reliable choice for medium-run tooling applications.

A2 flat stock in this size range is commonly used in tool and die shops, maintenance and repair operations, and precision machine shops. It is suited for applications where a tighter dimensional tolerance and consistent cross-section are needed before hardening and grinding. The 18-inch length allows a machinist or toolmaker to cut multiple blanks from a single piece, reducing material waste on short tooling components. This stock is typically processed by grinding, EDM, or conventional machining prior to heat treatment.

Key Features

• AISI A2 air-hardening tool steel for good toughness and wear resistance
• Thickness tolerance of plus or minus 0.001 inches for consistent stock removal
• Width tolerance of plus 0.000 to 0.005 inches
• Square tolerance of plus or minus 0.001 inches
• Length tolerance of plus 0.250 inches
• Precision flat stock format ready for toolmaking blanks, dies, and gauges

Compatibility

Designed as a standard AISI A2 air-hardening tool steel flat stock for general toolmaking, die making, and precision machining applications requiring close-tolerance rectangular bar stock.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists or toolmakers using appropriate personal protective equipment. Secure the workpiece firmly before any material removal operation. Heat treatment of A2 tool steel should follow the material manufacturer's recommended hardening and tempering procedures; improper heat treatment can result in distortion or cracking. Always allow the material to reach ambient temperature before taking final measurements.