Drill Rod Tool Steels 66762 O1 Tool Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 66762 is an O1 oil-hardening tool steel flat bar cut to 0.25 inches thick, 4 inches wide, and 18 inches long. O1 is an AISI-standard oil-hardening tool steel known for good dimensional stability during heat treatment and solid wear resistance after hardening. This flat stock is supplied in the annealed (soft) condition, ready for machining, grinding, or profiling before heat treatment. Machinists, toolmakers, and die shops use this material to fabricate punches, dies, gauges, knives, and other precision tooling where tight tolerances and predictable hardening response are required. At 5.16 pounds per piece, this is a single-piece stock length suitable for one-off tooling or short-run production work.

This flat stock is suited for job shops, tool-and-die operations, and maintenance machining environments that require a reliable general-purpose oil-hardening steel. Typical applications include blanking dies, forming tools, cutting blades, and wear components. The 18-inch length provides enough material for most single-tool applications while keeping handling straightforward on a mill or surface grinder. Tolerances are held to industry-standard levels for O1 flat stock, making this suitable for near-net machining before final grinding to finished dimension.

Key Features

• AISI Type O1 oil-hardening tool steel - predictable hardening response in oil quench
• Thickness tolerance of plus or minus 0.001 inches for consistent stock removal during grinding
• Width tolerance of plus 0.005 inches, minus 0.000 inches
• Length tolerance of plus 0.25 inches, minus 0.000 inches
• Squareness: edge 0.003 inches per inch of thickness, end 0.004 inches per inch of thickness
• Supplied annealed for full machinability prior to heat treatment

Compatibility

Designed as a standard O1 oil-hardening tool steel flat bar suitable for general toolmaking, die making, and precision machining applications requiring AISI Type O1 material specification.

Installation Notes

O1 tool steel flat stock is machined and ground by qualified toolmakers or machinists using conventional milling, turning, and surface grinding equipment. Heat treatment - including austenitizing temperature, oil quench, and draw temperature - should be performed by a qualified heat treater following AISI O1 guidelines; do not attempt heat treatment without proper equipment and controls. Allow material to reach ambient temperature before precision grinding to final dimension. Follow applicable shop safety practices for handling sharp-edged stock and machining tool steel.