Drill Rod Tool Steels 57729 O1 Tool Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 57729 is an O1 oil-hardening tool steel flat bar cut to 5/32 inches thick, 3/4 inches wide, and 18 inches long. O1 is a general-purpose tool steel known for excellent machinability in the annealed state and good edge retention after hardening. This flat stock is supplied in the annealed condition, ready for machining, grinding, and fitting before oil-quench hardening. It is used by tool and die makers, machinists, and skilled fabricators who need precise, close-tolerance steel bar stock for cutting tools, punches, dies, gauges, and fixtures. Thickness tolerance is held to plus or minus 0.001 inches, supporting precise fitment in demanding tooling applications.

This flat stock suits job shops, toolrooms, and maintenance departments requiring small quantities of accurately sized O1 tool steel. The 18-inch length accommodates a wide range of tooling blanks and custom part layouts. Its close dimensional tolerances make it appropriate for applications where stock removal during finishing is minimal and final dimensions must be held tightly. Licensed machinists and tool and die professionals are the typical end users for this material.

Key Features

• AISI Type O1 oil-hardening tool steel, suitable for machining before hardening
• Thickness held to plus or minus 0.001 inches for close-tolerance tooling work
• Width tolerance of plus 0.005 inches, minus 0.000 inches
• Length tolerance of plus 0.25 inches
• Squareness: edge 0.003 inches, end 0.004 inches per inch of thickness
• Single-piece minimum order quantity, sold individually

Compatibility

Designed as a standard AISI Type O1 oil-hardening tool steel flat bar suitable for use in tooling, die-making, punch fabrication, and gauge applications where oil-quench hardening stock is specified.

Installation Notes

Machining and grinding of O1 tool steel flat stock should be performed in the annealed condition using appropriate cutting fluids and tooling rated for tool steel. Hardening requires oil quenching by a qualified machinist or heat treater following the material manufacturer's recommended thermal cycle. Use proper personal protective equipment when cutting or grinding steel stock. Handle edges carefully, as ground flat stock can carry sharp burrs.