Drill Rod Tool Steels 839691 O1 Flat Stock Tool Steel

Product Description

The DRILL ROD TOOL STEELS 839691 is an O1 oil-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who require a reliable, machinable blank before heat treatment. Measuring 0.25 inches thick, 0.375 inches wide, and 36 inches long, this flat stock meets AISI Type O1 specifications and holds a thickness tolerance of plus or minus 0.001 inches. O1 tool steel is widely used for its excellent machinability in the annealed state and its ability to achieve high hardness after oil quenching, making it a standard choice for punches, dies, gauges, and cutting tools.

This flat stock is suited for job shops, tool and die operations, and maintenance departments that fabricate or repair tooling components. The 36-inch length provides enough stock for multiple short blanks or a single long workpiece. Its tight dimensional tolerances make it appropriate for applications where near-net stock sizing reduces setup time on surface grinders or milling machines. Licensed machinists and tool and die makers are the primary installers and fabricators for this material.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable heat treat response
• Thickness tolerance of plus or minus 0.001 inches for consistent stock removal planning
• Width tolerance of plus 0.005 inches, minus 0.000 inches
• Length tolerance of plus 0.5 inches, minus 0.000 inches
• Squareness: edge 0.003 inches, end 0.004 inches per inch of thickness
• 36-inch length suitable for single or multiple-piece blanks

Compatibility

Designed as a general-purpose O1 oil-hardening flat stock blank for use in tool and die fabrication, punch and die sets, gauges, and similar tooling applications requiring AISI Type O1 material.

Installation Notes

Machining and fabrication of tool steel flat stock should be performed by qualified machinists using appropriate cutting fluids and speeds for tool steel in the annealed condition. O1 tool steel requires oil quenching during heat treatment; follow established heat treating procedures and use proper personal protective equipment when handling heated material. Always secure workpieces firmly before cutting or grinding. Consult material safety data sheets for handling and disposal guidance.