Drill Rod Tool Steels 57840 O1 Tool Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 57840 is an O1 oil-hardening tool steel flat stock bar measuring 1 inch thick, 4 inches wide, and 18 inches long. O1 is an oil-quench tool steel conforming to AISI Type O1 specifications, known for its dimensional stability and machinability in the annealed state. This flat stock is precision-ground to tight tolerances, including a thickness tolerance of plus or minus 0.001 inches and a width tolerance of plus 0.005 to minus 0.000 inches. It is used by tool and die makers, machinists, and metalworking professionals who require a reliable, weldable tool steel blank ready for hardening and finishing.

O1 oil-hardening flat stock is a standard choice in tool rooms, job shops, and custom fabrication environments. It is used to produce punches, dies, gauges, jigs, fixtures, and cutting tools where moderate toughness and good wear resistance after heat treatment are required. The 1-inch thickness and 4-inch width make this bar suitable for medium-to-heavy tooling blanks. Licensed machinists and tool and die makers typically source this material for both production tooling and prototype work where precise final dimensions are critical after grinding and heat treatment.

Key Features

• AISI Type O1 oil-hardening tool steel for controlled heat treatment response
• Thickness tolerance of plus or minus 0.001 inches for precision machining fits
• Width tolerance of plus 0.005 to minus 0.000 inches
• Length tolerance of plus 0.25 inches
• Square tolerance of plus or minus 0.003 inches across flat faces
• Weighs 20.62 pounds per piece - suitable for medium tooling blanks

Compatibility

Designed as a general-purpose O1 oil-hardening tool steel flat bar for use in tool and die, machining, and metalworking applications requiring AISI Type O1 material specification.

Installation Notes

This material is supplied in the annealed state and requires oil quenching and tempering by a qualified heat treater or machinist before service in hardened tooling applications. All cutting, grinding, and drilling operations should be completed prior to heat treatment. Use appropriate personal protective equipment when machining tool steel, and follow shop ventilation requirements when grinding. Consult AISI O1 heat treatment guidelines for hardening and tempering temperature ranges.