Starrett 53967 O1 Tool Steel Flat Stock 1/16x8x18 in

Product Description

The STARRETT 53967 is an O1 oil-hardening tool steel flat stock bar used in precision toolmaking, die making, and machining applications. Manufactured to AISI Type O1 specification, this flat stock measures 1/16 inch thick, 8 inches wide, and 18 inches long. It holds a thickness tolerance of plus or minus 0.001 inches and a squareness tolerance of plus or minus 0.001 inches, making it well suited for applications where dimensional consistency is critical. The part weighs 2.55 pounds. Machinists, tool and die makers, and metalworking professionals work with this material to fabricate punches, dies, gauges, and precision fixtures.

O1 tool steel flat stock is used across job shops, toolrooms, and manufacturing facilities where a tough, wear-resistant steel is required in a pre-sized flat bar form. The 8-inch width and 18-inch length provide a workable blank for a wide range of tooling cuts. The oil-hardening characteristic of O1 allows the material to be heat treated with minimal distortion compared to water-hardening grades, which is a practical advantage when working to tight finished tolerances. This stock is appropriate for both light and heavy material removal operations prior to heat treatment.

Key Features

• AISI Type O1 oil-hardening tool steel for wear resistance and good machinability before hardening
• Thickness tolerance of plus or minus 0.001 inches for consistent stock removal planning
• Width tolerance of 0.0000 to minus 0.005 inches
• Length tolerance of plus 0.250 inches
• Squareness tolerance of plus or minus 0.001 inches with edge squareness of 0.003 inches per inch
• Pre-sized flat bar format reduces raw material prep time in the toolroom

Compatibility

Designed as a standard O1 oil-hardening tool steel flat stock suitable for toolmaking, die making, gauge fabrication, and general precision machining applications requiring AISI Type O1 material specification.

Installation Notes

This material is supplied in the annealed condition and is intended to be machined to final shape before heat treatment. Use appropriate cutting fluids and carbide or high-speed steel tooling for best results. Heat treatment, including oil quenching, should be performed by a qualified heat treat professional or in accordance with AISI O1 tool steel specifications. Always use proper personal protective equipment when cutting, grinding, or heat treating tool steel stock.