Starrett 54007 O1 Tool Steel Flat Stock 1/8x2-1/2x18 in

Product Description

The STARRETT 54007 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, and precision machining applications. Manufactured to AISI Type O1 specifications, it measures 1/8 inch thick, 2-1/2 inches wide, and 18 inches long. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for applications where dimensional accuracy is critical before and after heat treatment. Machinists, tool and die makers, and industrial maintenance technicians rely on O1 flat stock for fabricating punches, dies, gauges, and cutting tools that require a hard, wear-resistant finished surface.

O1 tool steel flat stock is used across job shops, toolrooms, and maintenance departments in both light and heavy industrial settings. It is well suited for producing custom tooling, fixtures, and wear components. This bar stock ships in a single-piece quantity and is sized for direct use or further cutting to length on a band saw or cold saw. Because O1 steel machines readily in the annealed condition and responds predictably to oil-quench hardening, it is a standard choice when machinists need a balance of machinability and final hardness.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable heat-treat response
• Thickness tolerance of plus or minus 0.001 inches for close-tolerance work
• Width tolerance of 0.000 to minus 0.005 inches
• Length tolerance of plus 0.250 inches, minus 0 inches
• Edge squareness held to 0.003 inches per inch on all edges
• Weighs 1.6 pounds — sized for direct bench or toolroom use

Compatibility

Designed as a standard-profile O1 oil-hardening tool steel flat bar suitable for toolroom, die, and fixture fabrication applications requiring AISI Type O1 material specification.

Installation Notes

Cutting and machining should be performed in the annealed condition using appropriate metalworking equipment such as a band saw, milling machine, or surface grinder. Heat treatment to final hardness requires oil quenching per standard O1 tool steel procedures and should be performed by qualified personnel following applicable shop safety practices. Always wear appropriate personal protective equipment when cutting, grinding, or heat treating tool steel. Finished dimensions should be verified with calibrated gauging after any grinding or heat-treat operations.