Drill Rod Tool Steels 66748 O1 Flat Stock 3/16x1x18 in

Product Description

The DRILL ROD TOOL STEELS 66748 is an O1 oil-hardening flat stock bar used in toolmaking, die work, and precision machining applications. Manufactured to AISI Type O1 specifications, this flat stock measures 3/16 inches thick, 1 inch wide, and 18 inches long, with tight dimensional tolerances: plus or minus 0.001 inches on thickness, plus 0.005 inches on width, and plus 0.25 inches on length. Squareness tolerance is held to plus or minus 0.003 inches. This material is supplied in the annealed condition and is intended for fabrication prior to oil-quench heat treatment. Machinists, tool and die makers, and metal fabricators work with this stock.

O1 tool steel flat stock is used across a wide range of precision fabrication environments, including job shops, maintenance departments, and production toolrooms. Typical applications include blanks for punches, dies, gauges, cutting tools, and fixtures where dimensional accuracy before heat treat is critical. The 18-inch length suits short-run custom tooling without excessive material waste. This bar is suited for both manual machining and CNC work where the operator will profile, drill, and finish to final dimensions before hardening.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable heat treat response
• Thickness tolerance held to plus or minus 0.001 inches for precision blank work
• Width tolerance of plus 0.005 inches, zero minus, for consistent fitment
• Length tolerance of plus 0.25 inches accommodates finish-cut allowance
• Squareness tolerance of plus or minus 0.003 inches on edges
• Weighs approximately 0.97 pounds per piece - easy single-operator handling

Compatibility

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

Installation Notes

Tool and die makers and machinists should machine this stock to final form before performing oil-quench hardening and tempering. Follow established metallurgical procedures and applicable shop safety standards when heat treating tool steel. Use appropriate PPE when cutting or grinding, as tool steel chips and grinding sparks present injury hazards. Always verify final dimensional requirements against print tolerances before committing stock to heat treatment.