Starrett 54002 O1 Tool Steel Flat Stock 1/8 X 1 X 18 in

Product Description

The STARRETT 54002 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die work, jig construction, and precision machining applications. Manufactured to AISI Type O1 specification, this flat stock measures 1/8 inch thick, 1 inch wide, and 18 inches long. It holds a thickness tolerance of plus or minus 0.001 inches and a width tolerance of 0.000 to 0.005 inches, making it suitable for applications where dimensional consistency is required before heat treatment. Machinists and tool-and-die tradespeople work with this stock in its annealed state, then harden and oil-quench it to achieve the desired hardness for cutting tools, punches, and gauges.

O1 tool steel flat stock in this size range is commonly used in small shops, toolrooms, and production environments for fabricating custom tooling, fixtures, and wear components. The 18-inch length provides practical stock for cutting multiple blanks or machining a single elongated tool component. The 1/8-inch thickness suits thin-section punches, blades, and flat gauges. Edge squareness is held to 0.003 inches per inch across all edges, supporting accurate layout and machining setups without additional dressing on well-maintained cuts.

Key Features

• AISI Type O1 oil-hardening tool steel for consistent heat treat response
• Thickness of 1/8 inch with plus or minus 0.001 inch tolerance
• Width of 1 inch with 0.000 to 0.005 inch tolerance
• Length of 18 inches with a plus 0.250 inch length tolerance
• Edge squareness held to 0.003 inches per inch on all edges
• Supplied in annealed condition, ready for machining prior to hardening

Compatibility

Designed as a standard O1 tool steel flat stock bar suitable for general toolroom and die shop use where AISI Type O1 oil-hardening material is specified.

Installation Notes

Machining and heat treatment of tool steel should be performed by qualified machinists or tool-and-die tradespeople familiar with O1 steel properties. Always machine this stock in its annealed condition before hardening. Follow established shop safety procedures when oil quenching, including the use of appropriate quench tanks and fire safety measures. Consult applicable OSHA and shop safety standards when performing heat treatment operations.