Drill Rod Tool Steels 57933 O1 Tool Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 57933 is an O1 oil-hardening tool steel flat bar ground to close dimensional tolerances for reliable use in toolmaking, die work, and precision machining applications. Measuring 3/8 inches thick, 3-1/2 inches wide, and 36 inches long, this flat stock is manufactured to AISI Type O1 specifications and weighs 13.54 pounds per piece. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for applications where dimensional consistency is critical before and after heat treatment. Machinists, toolmakers, and die makers typically work with this material in tool and die shops and industrial maintenance environments.

O1 oil-hardening tool steel flat stock is widely used for punches, dies, gauges, jigs, fixtures, and cutting tools where moderate toughness and good wear resistance are needed. This bar length of 36 inches provides a full working blank that can be cut to size for multiple tool blanks. The oil-hardening designation means the material is hardened by quenching in oil rather than water, reducing the risk of distortion during heat treatment. This material is handled by machinists and tool-and-die makers and is a standard stocked form for both production shops and jobbing operations.

Key Features

• AISI Type O1 oil-hardening tool steel - reduces distortion risk during quench compared to water-hardening grades
• Tight thickness tolerance of plus or minus 0.001 inches for dimensional consistency
• Width tolerance of plus 0.005 inches, minus 0.000 inches
• Length tolerance of plus 0.5 inches
• Squareness held to 0.003 inches on edges and 0.004 inches per inch of thickness on ends
• Full 36-inch bar length provides multiple usable blanks per piece

Compatibility

Designed as a standard AISI O1 oil-hardening tool steel flat bar suitable for toolmaking, die making, gauge manufacture, and general precision machining applications requiring a ground flat stock in this size range.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists using appropriate tooling rated for hardened or semi-hard steel. Heat treatment - including austenitizing, oil quenching, and tempering - should follow AISI O1 recommendations and be performed by personnel familiar with tool steel processing. Always allow the material to return to room temperature before final dimensioning or inspection. Use proper personal protective equipment when cutting or grinding tool steel.