Drill Rod Tool Steels 58101 O1 Tool Steel Flat Stock

Product Description

The DRILL ROD TOOL STEELS 58101 is an O1 oil-hardening tool steel flat stock bar measuring 0.25 inches thick, 14 inches wide, and 36 inches long. O1 is a general-purpose tool steel known for its good machinability in the annealed state and its ability to achieve high hardness through oil quenching. This flat stock is held to tight dimensional tolerances, including a thickness tolerance of plus or minus 0.001 inches and a width tolerance of plus 0.005 inches to zero. Machinists, toolmakers, and die makers use this material to fabricate cutting tools, dies, punches, gauges, and fixtures where close tolerances and reliable oil-hardening response are required.

This flat stock is suited for job shop and production toolroom applications in both small-shop and industrial settings. The 36-inch length provides enough stock to cut multiple blanks from a single piece. The 14-inch width accommodates wide die sections, stripper plates, and large fixture components. At 0.25 inches thick, this bar is well suited for thin die plates, shim-style fixtures, and flat tooling blanks. The material specification is AISI Type O1, confirming oil-hardening grade compliance for applications that demand consistent heat-treat response.

Key Features

• AISI Type O1 oil-hardening tool steel for consistent quench hardening response
• Tight thickness tolerance of plus or minus 0.001 inches for close-tolerance tooling blanks
• Width tolerance of plus 0.005 inches to zero for predictable stock removal planning
• Length tolerance of plus 0.5 inches to zero - provides usable overstock for facing operations
• Squareness held to 0.003 inches on edges and 0.004 inches per inch of thickness on ends
• 36-inch length and 14-inch width support large die sections and multiple-blank cutoff layouts

Compatibility

Designed as a general-purpose O1 oil-hardening tool steel flat stock for toolroom fabrication of dies, punches, gauges, stripper plates, and similar components requiring oil-quench heat treatment.

Installation Notes

Cutting and machining of tool steel flat stock should be performed by qualified machinists or toolmakers using appropriate speeds and feeds for annealed tool steel. All heat-treating operations, including oil quenching and tempering, should be carried out by personnel familiar with AISI O1 procedures and with proper personal protective equipment. Secure the workpiece firmly before cutting or grinding to prevent movement. Allow material to reach room temperature before taking final tolerance measurements.