Drill Rod Tool Steels 66798 O1 Tool Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 66798 is an O1 oil-hardening tool steel flat stock bar measuring 3/32 inches thick, 1 inch wide, and 36 inches long. Conforming to AISI Type O1 material specification, this flat stock is produced from tool steel known for its dimensional stability and good wear resistance after oil hardening. Thickness tolerance is held to plus or minus 0.001 inches, width tolerance is plus 0.005 inches and minus 0.000 inches, and length tolerance is plus 0.5 inches. Machinists, toolmakers, and die makers use this material to fabricate punches, dies, gauges, and similar precision tooling components that require post-machining heat treatment.

This flat stock is suited for tool and die shops, maintenance machining operations, and prototype fabrication where tight dimensional tolerances and predictable oil-hardening response are required. It ships in an annealed condition, making it machinable with conventional tooling before hardening. The 36-inch length allows for single-piece blanks or multiple shorter parts cut from one bar. It is a standard choice for low-to-medium production tooling applications in metalworking environments.

Key Features

• AISI Type O1 oil-hardening tool steel construction for predictable heat treatment response
• Thickness held to plus or minus 0.001 inches for precision fitment
• Width tolerance of plus 0.005 inches and minus 0.000 inches
• Squareness: edge 0.003 inches per inch of thickness, end 0.004 inches per inch of thickness
• Ships in annealed condition for machinability prior to hardening
• Single 36-inch bar per package for flexible cutting to length

Compatibility

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

Installation Notes

Machining and heat treatment of tool steel flat stock should be performed by qualified machinists or toolmakers familiar with O1 oil-hardening procedures. Appropriate personal protective equipment and machine guarding are required during cutting and grinding operations. Oil hardening and tempering should follow established metallurgical guidelines for AISI O1 tool steel. Always allow material to reach ambient temperature before taking final dimensional measurements.