Drill Rod Tool Steels 66777 O1 Tool Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 66777 is an O1 oil-hardening tool steel flat stock bar cut to 0.5 inches thick, 1 inch wide, and 18 inches long. Manufactured to AISI Type O1 specification, this flat stock is sized and toleranced for precision toolmaking, die work, punches, and general tool room applications. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for applications where dimensional accuracy before hardening is critical. At 2.58 pounds, it is a manageable single-piece stock that machinists, tool and die makers, and industrial maintenance trades use to fabricate or replace tooling components.

O1 tool steel flat stock is used in job shops, tool rooms, and maintenance departments for fabricating punches, dies, gauges, bushings, and custom cutting tools. The oil-hardening characteristic of AISI O1 means it reaches full hardness with minimal distortion during the quench cycle, making it a preferred material when close-tolerance finished dimensions are required after heat treatment. This piece is suited for low-to-medium production tooling in both light industrial and heavy manufacturing environments.

Key Features

• AISI Type O1 oil-hardening tool steel for minimal distortion during heat treatment
• Tight thickness tolerance of plus or minus 0.001 inches for precision stock preparation
• Width tolerance of plus 0.005 inches, minus 0.000 inches
• Length tolerance of plus 0.25 inches
• Squareness held to 0.003 inches on edges and 0.004 inches per inch of thickness on ends
• Single-piece quantity available with no minimum order beyond one unit

Compatibility

Designed as a standard AISI Type O1 oil-hardening tool steel flat bar suitable for general tool room stock applications requiring precision-toleranced pre-hardened flat material.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed with tooling rated for hardened or semi-hardened steel. Heat treatment and oil quenching should be carried out by qualified personnel following established metallurgical procedures for AISI O1 tool steel. Always allow the workpiece to reach ambient temperature before taking final measurements to verify dimensional compliance with tolerance requirements.