Drill Rod Tool Steels 57756 O1 Tool Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 57756 is an O1 oil-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who need a precision-ground, annealed flat blank ready for layout, machining, and heat treatment. Measuring 5/16 inches thick, 3 inches wide, and 18 inches long, this bar conforms to AISI Type O1 material specification. Thickness tolerance is held to plus or minus 0.001 inches, giving close dimensional control out of the box. At 4.83 pounds, it is a single-piece blank sized for fabricating punches, dies, gauges, jigs, and similar tooling components.

O1 tool steel flat stock is suited for shop-floor tooling applications in both job shops and production environments. The oil-hardening characteristic of AISI O1 means the bar can be hardened with less distortion than water-hardening grades, making it a common choice for flat tooling, precision templates, and cutting blades. This bar ships in annealed condition, ready to machine before hardening. Metalworking professionals working in fabrication, mold-making, or tool-and-die trades are the primary users.

Key Features

• AISI Type O1 oil-hardening tool steel - reduced distortion during heat treatment compared to water-hardening grades
• Thickness tolerance of plus or minus 0.001 inches for precise fit in tool and die applications
• Width tolerance of plus 0.005 inches, minus 0.000 inches
• Length tolerance of plus 0.25 inches
• Squareness: edge 0.003 inches per inch of thickness, end 0.004 inches per inch of thickness
• Ships annealed and ready to machine

Compatibility

Designed as a standard AISI Type O1 oil-hardening tool steel flat stock blank suitable for general tool-and-die, gauge, punch, and fixture fabrication applications.

Installation Notes

Machining and heat treatment of O1 tool steel should be performed by a qualified machinist or toolmaker familiar with tool steel handling procedures. Always machine this bar in the annealed condition before hardening; attempting to machine fully hardened O1 stock significantly increases tool wear and risk of cracking. Follow the material supplier or ASM heat treatment guidelines for austenitizing temperature, quench medium, and tempering cycle - do not rely on this listing for specific heat treatment values. Use appropriate eye protection, secure workholding, and proper cutting fluids when machining.