Starrett 54468 O1 Tool Steel Flat Stock 5/8x3x36 in

Product Description

The STARRETT 54468 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die work, punch fabrication, and precision machining applications. It measures 0.625 inches thick, 3 inches wide, and 36 inches long, with a weight of 19.13 pounds. Manufactured to AISI Type O1 specification, this flat stock is ground to close tolerances, making it suitable for applications where dimensional accuracy is critical before and after heat treatment. Licensed machinists, tool and die makers, and metalworking shops are the primary users. The ground finish and tight tolerance profile reduce pre-machining time when fabricating tooling blanks.

This flat stock is appropriate for general toolmaking environments in both job shop and production toolroom settings. It is used to produce punches, dies, gauges, jigs, fixtures, and other precision tooling components. O1 tool steel is a versatile oil-hardening grade that machines well in the annealed condition and responds predictably to heat treatment. It is suited for low-to-moderate production tooling where impact toughness requirements are not extreme. The 36-inch length allows multiple blanks to be cut from a single bar depending on the finished part dimensions.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable heat treat response
• Ground flat stock with thickness tolerance of plus or minus 0.001 inches
• Length tolerance of plus 0.015 inches, width tolerance of minus 0 to minus 0.005 inches
• Squareness: edge all 0.003 inches per inch
• Ready-to-machine annealed condition reduces prep time in toolroom applications
• Single-piece packaging with no minimum order above one unit

Compatibility

Designed as a standard O1 oil-hardening tool steel flat stock suitable for toolroom, die-making, and precision machining applications requiring AISI Type O1 material specification.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists or tool and die makers using appropriate metalworking equipment. Follow applicable shop safety standards for cutting fluid use, grinding wheel selection, and heat treatment procedures. Heat treatment of O1 tool steel requires proper quenching in oil and tempering in accordance with the material specification — consult your heat treat procedure documentation before processing. Always wear appropriate PPE when cutting or grinding steel bar stock.