Starrett 54001 O1 Tool Steel Flat Stock 1/8x3/4x18 in

Product Description

The STARRETT 54001 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 material specification, this flat stock measures 1/8 inch thick, 3/4 inch wide, and 18 inches long. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for applications that demand close dimensional control. At 0.48 pounds, the bar is ready for bench work, grinding, or heat treating in a shop environment. Machinists, tool-and-die makers, and mold makers are the primary users of this stock.

O1 tool steel flat stock is a standard material for fabricating cutting tools, punches, dies, gauges, and fixtures in both job shop and production toolroom environments. The oil-hardening characteristic of AISI O1 makes it well suited for applications where dimensional stability during heat treat is important. This bar is supplied in an annealed condition, allowing it to be machined and then hardened to final hardness by the end user through conventional oil-quench heat treatment. It is appropriate for low-to-medium production tooling where toughness and wear resistance are required.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable heat treat response
• Thickness held to plus or minus 0.001 inches for close-tolerance toolroom use
• Width tolerance of 0.0000 to 0.0050 inches (minus side only)
• Length tolerance of plus 0.250 inches, minus 0 inches
• Edge squareness held to 0.003 inches per inch across all edges
• Supplied annealed and ready for machining prior to hardening

Compatibility

Designed as a standard AISI O1 oil-hardening tool steel flat bar suitable for toolroom, die-making, and precision fixture fabrication applications requiring close dimensional tolerances.

Installation Notes

O1 tool steel flat stock is machined and shaped by toolmakers prior to heat treatment. All grinding, drilling, and milling operations should be completed in the annealed state before oil-quench hardening. Wear appropriate PPE when performing heat treating operations. Follow applicable shop safety procedures and equipment manufacturer guidelines for furnace and quench tank operation.