Drill Rod Tool Steels 839501 O1 Tool Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 839501 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die work, punches, gauges, and precision machining applications. Manufactured to AISI Type O1 specification, this flat stock measures 0.0625 inches thick, 0.625 inches wide, and 18 inches long, with a weight of 0.2 pounds. O1 tool steel is known for its fine grain structure and good machinability in the annealed state, making it a standard choice for fabricators and toolmakers who need consistent material that responds predictably to oil-hardening heat treatment.

This flat stock is suited for machine shops, tool and die operations, and general metalworking environments. It is typically cut, machined, and heat-treated on-site to produce custom tooling components such as blanks, blades, gauges, and forming dies. The 18-inch length provides a practical starting size for a wide range of toolmaking cuts. Licensed machinists and tool and die makers are the primary trade professionals working with this material.

Key Features

• AISI Type O1 oil-hardening tool steel material specification
• Thickness of 0.0625 inches with a tolerance of plus or minus 0.001 inches
• Width of 0.625 inches with a tolerance of plus 0.005 inches, minus 0.000 inches
• Length of 18 inches with a tolerance of plus 0.25 inches
• Squareness: edge 0.003 inches, end 0.004 inches per inch of thickness
• Sold individually - minimum order quantity of 1 piece

Compatibility

Designed as a standard AISI O1 oil-hardening tool steel flat stock suitable for general toolmaking, die making, and precision machining applications where O1 specification material is required.

Installation Notes

Machining and heat treatment of O1 tool steel should be performed by qualified machinists or tool and die makers familiar with oil-quench hardening procedures. Always wear appropriate personal protective equipment when cutting, grinding, or heat-treating tool steel. Follow applicable shop safety codes and equipment manufacturer guidelines when operating cutting or heat-treatment equipment. Material arrives in annealed condition and requires heat treatment to reach working hardness.