Drill Rod Tool Steels 66743 O1 Tool Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 66743 is an O1 oil-hardening tool steel flat stock bar cut to 0.125 inches thick, 6 inches wide, and 18 inches long. Manufactured to AISI Type O1 specifications, this flat stock is used in toolmaking, die work, punch fabrication, and precision machining applications where tight dimensional tolerances are required. It ships at a weight of 3.87 pounds and holds a thickness tolerance of plus or minus 0.001 inches, making it suitable for applications that demand close control over stock dimensions. Machinists, tool and die makers, and metalworking shops are the primary users of this material.

O1 tool steel flat stock in this size is commonly used in the fabrication of punches, dies, fixtures, gauges, and cutting tools. The 6-inch width and 18-inch length provide usable material for a range of small to mid-size tooling projects. This stock is supplied in the annealed condition and requires heat treatment and oil quenching to achieve working hardness. It is suited to job shop environments, prototype toolrooms, and production toolmaking operations.

Key Features

• AISI Type O1 oil-hardening tool steel - annealed condition, ready for machining prior to heat treat
• Thickness tolerance of plus or minus 0.001 inches for precise fit in close-tolerance tooling applications
• Width tolerance of plus 0.005 inches, minus 0.000 inches
• Length tolerance of plus 0.25 inches
• Squareness: edge 0.003 inches, end 0.004 inches per inch of thickness
• Single-piece minimum order quantity - no bulk purchase required

Compatibility

Designed as a standard AISI Type O1 oil-hardening tool steel flat bar suitable for general toolmaking, die making, and precision machining applications where O1 grade material is specified.

Installation Notes

Cutting and machining of tool steel flat stock should be performed with appropriate metalworking equipment by qualified machinists or tool and die makers. Personal protective equipment including eye and hand protection is required during all cutting, grinding, and machining operations. Heat treatment and oil quenching must be performed according to established metallurgical procedures for AISI O1 tool steel to achieve target hardness. Allow material to reach ambient temperature before taking final measurements, as thermal expansion affects dimensional accuracy.