Drill Rod Tool Steels 66825 O1 Tool Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 66825 is an O1 oil-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who require precise, dimensionally consistent raw material. Conforming to AISI Type O1 specification, this flat stock measures 0.25 inches thick, 1 inch wide, and 36 inches long, with a weight of 2.58 pounds per piece. O1 tool steel is known for its excellent machinability in the annealed condition and its ability to achieve high hardness after oil quenching, making it a reliable choice for punches, dies, gauges, and cutting tools.

This flat stock is suited for machine shops, tool and die operations, and general metalworking applications where tight dimensional tolerances are required before heat treatment. The annealed bar machines cleanly and holds edges well after hardening. It is appropriate for both prototype and production tooling work in industrial and commercial shop environments. Fabricators working with molds, jigs, fixtures, or precision cutting edges will find this stock a practical starting material.

Key Features

• AISI Type O1 oil-hardening tool steel for high post-quench hardness
• 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
• Squareness tolerance: edge 0.003 inches, end 0.004 inches per inch of thickness
• Supplied in annealed condition, ready for machining prior to heat treatment

Compatibility

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

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists using appropriate cutting fluids and tooling rated for tool steel. Always follow shop safety practices when sawing or milling hardened or pre-hardened steel bar stock. Heat treatment, including oil quenching and tempering, should be performed by personnel familiar with proper hardening procedures for O1 tool steel to avoid cracking or distortion. Wear appropriate PPE, including eye protection, when cutting or grinding.