Drill Rod Tool Steels 57930 O1 Tool Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 57930 is an O1 oil-hardening tool steel flat bar supplied in an annealed, ready-to-machine condition. It measures 3/8 inch thick, 1-3/4 inches wide, and 36 inches long, with a weight of 6.77 pounds per piece. O1 tool steel is known for its fine grain structure, good dimensional stability during heat treatment, and excellent machinability in the annealed state. Thickness tolerance is held to plus or minus 0.001 inches, width tolerance is plus 0.005 inches, and length tolerance is plus 0.5 inches. This stock is used by tool and die makers, machinists, and metalworking professionals who require a consistent, oil-hardening grade for precision tooling applications.

O1 flat stock at this cross-section is commonly specified for punches, dies, gages, lathe centers, chuck jaws, and similar tooling where moderate toughness and good wear resistance after hardening are required. It is well suited for low-to-medium production tooling in job shops, tool rooms, and maintenance machine shops. The 36-inch bar length allows multiple blanks to be cut from a single piece, reducing material waste in typical tooling setups.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable heat treat response
• Supplied annealed for ease of machining prior to hardening
• Tight thickness tolerance of plus or minus 0.001 inches supports precision layout work
• Squareness held to 0.003 inches on edges and 0.004 inches per inch of thickness on ends
• Single-piece minimum order quantity simplifies low-volume tooling projects

Compatibility

Designed as a standard AISI O1 oil-hardening tool steel flat bar suitable for general tooling, die making, and precision machining applications requiring an oil-quench grade material.

Installation Notes

Cutting and grinding of tool steel flat stock should be performed by a qualified machinist using appropriate metalworking equipment and personal protective equipment including eye and face protection. Heat treatment of O1 tool steel requires controlled furnace equipment and oil quench media; this process should be performed by personnel familiar with tool steel hardening procedures. Always allow the bar to return to room temperature before performing precision layout or final grinding operations.