Starrett 53984 O1 Tool Steel Flat Stock 3/32x2-1/2x18 in

Product Description

The STARRETT 53984 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, punch and fixture fabrication, and precision machining applications. The bar measures 3/32 inch thick, 2-1/2 inches wide, and 18 inches long, with a thickness tolerance of plus or minus 0.001 inches for consistent stock removal and layout work. Manufactured to AISI Type O1 specification, this tool steel is well suited for applications requiring good machinability in the annealed state followed by oil-quench hardening to achieve high hardness and wear resistance. Licensed machinists, toolmakers, and die makers are the primary users of this material.

O1 tool steel flat stock in this size range is commonly used in job shops, tool and die facilities, and maintenance departments for fabricating custom tooling, cutting tools, gauges, jigs, and fixtures. The 18-inch length provides adequate stock for most bench-scale toolmaking tasks without excessive material waste. This bar ships in the annealed condition and requires heat treatment by qualified personnel before use in hardened tooling applications. It is suitable for both light machining operations and hand fitting prior to hardening.

Key Features

• AISI Type O1 oil-hardening tool steel in annealed flat bar form
• Thickness tolerance of plus or minus 0.001 inches for precise stock sizing
• Width tolerance of 0.0000 to minus 0.005 inches
• Length tolerance of plus 0.250 inches, minus 0
• Edge squareness of 0.003 inches per inch on all edges
• Ready for machining in annealed condition prior to oil-quench hardening

Compatibility

Designed as a general-purpose O1 oil-hardening tool steel flat bar suitable for toolmaking, die making, and fixture applications requiring AISI Type O1 material specification.

Installation Notes

Cutting and machining of tool steel flat stock should be performed by qualified machinists or toolmakers using appropriate metalworking equipment. Heat treatment to harden O1 tool steel requires controlled furnace conditions and proper quenching procedure in oil — this work should be performed by personnel trained in tool steel heat treatment. Wear appropriate PPE when cutting or grinding tool steel bar stock. All heat treating operations should comply with applicable shop safety standards.