Drill Rod Tool Steels 66764 O1 Tool Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 66764 is an O1 oil-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who need a reliable, pre-cut blank ready for heat treatment and finishing. Conforming to AISI Type O1 material specification, this flat stock measures 0.3125 inches thick, 0.5 inches wide, and 18 inches long, with a weight of 0.81 pounds. O1 tool steel is widely used where good wear resistance, dimensional stability during hardening, and ease of machining are required. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for precision tooling blanks, punches, and fixtures.

This flat stock is appropriate for job shop and production toolroom environments. Typical applications include die components, hand tools, gauges, cutting blades, and other tooling where oil-quench hardening is the preferred heat-treat method. The 18-inch length provides a practical starting blank for most small-to-medium tooling projects. One piece is included per package, so quantities can be ordered to match exact project requirements without excess material.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable heat treatment response
• Thickness: 0.3125 inches with a tolerance of plus or minus 0.001 inches
• Width: 0.5 inches with a tolerance of plus 0.005 inches, minus 0.000 inches
• Length: 18 inches with a tolerance of plus 0.25 inches
• Squareness held to 0.003 inches on edges and 0.004 inches per inch of thickness on ends
• Ready-to-machine condition suitable for punches, dies, gauges, and cutting tools

Compatibility

Designed as a general-purpose O1 oil-hardening tool steel flat blank suitable for use in toolroom, die-making, and precision machining applications where AISI Type O1 material specification is required.

Installation Notes

Machining and heat treatment of tool steel flat stock should be performed by a qualified machinist or toolmaker familiar with O1 oil-hardening procedures. Always follow established shop safety practices when cutting, grinding, or heat treating tool steel. Use appropriate personal protective equipment when handling during or after heat treatment. Consult the material specification and applicable shop standards before hardening or tempering.