Starrett 54310 O1 Tool Steel Flat Stock 1/8x4.5x36 in

Product Description

The STARRETT 54310 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die-making, jig fabrication, and precision machining applications. Manufactured to AISI Type O1 specifications, this flat stock measures 0.125 inches thick, 4.5 inches wide, and 36 inches long, with a weight of 5.74 pounds. O1 tool steel offers excellent machinability in the annealed state and responds well to oil-quench hardening, making it a standard choice for punches, dies, gauges, and cutting tools. Thickness tolerance is held to plus or minus 0.001 inches, ensuring consistent stock removal and predictable heat-treat results for precision toolroom work.

This flat stock is suited for toolroom, maintenance, and production environments where O1 tool steel is specified. Typical applications include fabricating blanking dies, forming tools, precision fixtures, and wear plates in both jobshop and industrial settings. The 36-inch length provides a full bar suitable for cutting multiple blanks or machining a single long component. Machinists, tool-and-die makers, and metalworking professionals working to close tolerances will find this bar ready to machine in its annealed delivery condition.

Key Features

• AISI Type O1 oil-hardening tool steel for reliable heat-treat response
• Thickness held to plus or minus 0.001 inches for precision stock
• Length tolerance of plus 0.015 inches ensures full usable length
• Width tolerance of 0.000 to minus 0.005 inches for consistent fit
• Edge squareness held to 0.003 inches per inch across all edges
• Annealed condition allows straightforward machining before hardening

Compatibility

Designed as a standard AISI O1 oil-hardening tool steel flat bar suitable for general toolroom and die-making applications requiring this material specification.

Installation Notes

Cutting and machining should be performed in the annealed condition using appropriate metalworking equipment. Oil-quench hardening and tempering must be carried out by qualified personnel following established heat-treat procedures for AISI O1 tool steel. Handle flat stock carefully to avoid surface damage that could affect dimensional accuracy after hardening. Consult applicable shop safety standards when operating saws, mills, or grinders on tool steel stock.