Starrett 54781 A2 Tool Steel Flat Stock 7/8 X 7/8 X 18 in

Product Description

The STARRETT 54781 is an A2 air-hardening tool steel flat stock bar measuring 7/8 inches thick by 7/8 inches wide by 18 inches long. AISI A2 is a versatile cold-work tool steel known for its excellent dimensional stability during heat treatment and good wear resistance after hardening. This flat stock is ground to close tolerances, making it suitable for fabricating punches, dies, gauges, and other precision tooling components. Machinists, tool-and-die makers, and industrial maintenance technicians work with this material when a balance of toughness, wear resistance, and minimal distortion on air hardening is required.

A2 tool steel flat stock in this size range is commonly used in job shops, toolrooms, and maintenance departments for producing or repairing die components, cutting tools, and fixture elements. The 18-inch length provides enough stock for multiple short tooling blanks or a single longer component. Its square cross-section profile simplifies layout and setup on surface grinders, mills, and lathes. This stock is supplied in the annealed condition, ready for machining before heat treatment.

Key Features

• AISI A2 air-hardening tool steel for minimal distortion during heat treat
• Ground flat stock held to tight thickness tolerance of plus or minus 0.001 inches
• Width tolerance of plus 0.000 to 0.005 inches for consistent fit in tooling applications
• Square tolerance of plus or minus 0.001 inches supports precise layout and grinding
• Length tolerance of plus 0.250 inches ensures full usable length
• 18-inch bar length suitable for multiple tooling blanks from a single piece

Compatibility

Designed as a standard AISI A2 air-hardening tool steel flat stock for general toolroom, die-making, and precision machining applications where close dimensional tolerances are required.

Installation Notes

This material is supplied annealed and should be machined to final form before heat treatment. Heat treating A2 tool steel requires controlled atmosphere or vacuum furnace equipment and should be performed by qualified heat treat personnel following recognized metallurgical procedures. Use appropriate personal protective equipment when cutting, grinding, or machining tool steel stock. Secure workpieces properly in vises or fixtures to prevent movement during machining operations.