Drill Rod Tool Steels 66831 O1 Tool Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 66831 is an O1 oil-hardening tool steel flat stock bar measuring 0.25 inches thick, 3 inches wide, and 36 inches long. Conforming to AISI Type O1 material specification, this flat stock is machined to tight dimensional tolerances, with thickness held to +/- 0.001 inches and width tolerance of +0.005 / -0.000 inches. Weighing 7.74 pounds per piece, it is used by machinists, toolmakers, and metalworking shops that require a reliable, heat-treatable steel bar for fabricating dies, punches, gauges, and cutting tools. The oil-hardening grade provides good dimensional stability during heat treatment compared to water-hardening alternatives.

O1 tool steel flat stock is a standard material in job shops, tool-and-die operations, and maintenance machining environments. The 0.25 by 3 by 36 inch bar size suits a wide range of blanking dies, form tools, wear plates, and custom tooling applications. It is supplied in the annealed condition, ready for rough machining prior to hardening. Professionals working in precision toolmaking, mold making, and general metalworking commonly stock this size for recurring fabrication needs.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable heat treatment response
• Thickness tolerance of +/- 0.001 inches for close-tolerance tooling applications
• Width tolerance of +0.005 / -0.000 inches
• Length tolerance of +0.5 inches
• Squareness: edge 0.003 inches, end 0.004 inches per inch of thickness
• Supplied in annealed condition, ready for machining and subsequent hardening

Compatibility

Designed as a standard O1 oil-hardening tool steel flat bar suitable for die making, punch fabrication, gauge stock, and general precision tooling applications where AISI Type O1 material specification is required.

Installation Notes

Cutting, drilling, and grinding should be performed with appropriate metalworking equipment rated for tool steel. Heat treatment including hardening and tempering should be carried out by a qualified heat treater following recognized procedures for AISI O1 tool steel. Proper eye protection, machine guarding, and chip management practices apply throughout machining operations. Always verify final dimensions after any heat treatment cycle, as minor distortion may occur.