Starrett 54487 O1 Tool Steel Flat Stock 0.75x6x36 in

Product Description

The STARRETT 54487 is an O1 oil-hardening tool steel flat stock bar dimensioned at 0.75 inches thick, 6 inches wide, and 36 inches long. Manufactured to AISI Type O1 specifications, this flat stock is intended for toolmakers, machinists, and die makers who require a close-tolerance, hardenable steel blank ready for layout, machining, and heat treating. The thickness tolerance is held to plus or minus 0.001 inches, and edge squareness is maintained at 0.003 inches per inch, supporting precise tooling work with minimal stock removal before finishing. At 45.9 pounds, this is a full-size production blank suited for shop floor use.

O1 tool steel flat stock of this size is commonly used in the fabrication of punches, dies, jigs, fixtures, gauges, and cutting tools. The 6-inch width and 36-inch length provide ample material for multiple tool blanks or a single large die component. This grade is favored in job shops and production toolrooms where oil-quench heat treating is standard practice. Machinists working in metal fabrication, mold making, and precision tooling will find this bar suitable for demanding applications that require predictable hardening response and good dimensional stability through heat treat.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable, controlled heat treatment response
• Thickness tolerance of plus or minus 0.001 inches for close-tolerance tooling applications
• Length tolerance of plus 0.015 inches, zero minus for consistent blank sizing
• Width tolerance of 0.000 to minus 0.005 inches
• Edge squareness held to 0.003 inches per inch on all edges
• Full 36-inch length provides maximum flexibility for cutting multiple blanks

Compatibility

Designed as a standard O1 oil-hardening tool steel flat stock blank for use in toolrooms, die shops, and precision machining operations requiring AISI Type O1 material.

Installation Notes

This material is supplied in the annealed condition and is intended for machining prior to heat treatment. Cutting should be performed with appropriate metalworking equipment; use cutting fluids suitable for tool steel. Heat treating to final hardness should be performed by a qualified heat treat technician following established procedures for O1 oil-hardening tool steel. Always follow applicable shop safety practices when handling large steel stock of this weight.