Drill Rod Tool Steels 863685 O1 Tool Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 863685 is an O1 oil-hardening tool steel flat bar cut to close-tolerance dimensions for toolmaking, die work, and precision machining applications. Conforming to AISI Type O1 material specification, this flat stock measures 0.219 inches thick, 2.5 inches wide, and 18 inches long, with a weight of 2.82 pounds per piece. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for applications where dimensional consistency before heat treatment is critical. Machinists, toolmakers, and die makers rely on O1 stock for its predictable oil-quench hardening response and good wear resistance after hardening.

O1 tool steel flat stock is used in the fabrication of punches, dies, gauges, jigs, fixtures, and cutting tools across job shops, tool and die shops, and maintenance machining environments. The 18-inch length suits both short production runs and one-off tooling projects. Width tolerance is plus 0.005 inches to minus 0.000 inches, and length tolerance is plus 0.250 inches, giving machinists stock that can be finish-ground to final dimension without risk of being undersize.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable heat treat response
• Thickness held to plus or minus 0.001 inches for close-tolerance toolmaking
• Width tolerance of plus 0.005 to minus 0.000 inches - never undersize on width
• Squareness: edge 0.003 inches, end 0.004 inches per inch of thickness
• Ready-to-machine flat bar form - no additional milling required to begin layout
• Single-piece minimum order quantity for low-volume and prototype applications

Compatibility

Designed as a standard AISI Type O1 oil-hardening tool steel flat bar suitable for general toolmaking, die-making, and fixture fabrication wherever O1 grade material at these dimensions is specified.

Installation Notes

O1 tool steel flat stock is machined and ground by toolmakers using standard HSS or carbide tooling before heat treatment. Hardening involves heating to the appropriate austenitizing temperature followed by an oil quench - consult the material datasheet for the correct thermal cycle. Grinding after heat treatment should be performed with adequate coolant to prevent surface tempering. Always allow stock to reach room temperature before precision layout or grinding operations.