Drill Rod Tool Steels 58037 O1 Tool Steel Flat Stock 2x4x36

Product Description

The DRILL ROD TOOL STEELS 58037 is an O1 oil-hardening tool steel flat bar cut to 2 inches thick, 4 inches wide, and 36 inches long. O1 is a general-purpose tool steel valued for its excellent machinability in the annealed state and consistent dimensional stability through the oil-hardening process. At 82.49 pounds per piece, this is a full-section flat stock suited for toolmakers, machinists, and die shops fabricating punches, dies, gauges, and precision tooling where tight dimensional tolerances are required before and after heat treatment.

This flat stock is well suited for job shops, tool and die operations, and maintenance machining environments that require a reliable O1 stock in large cross-sections. The 2 x 4 inch cross-section supports heavy-duty tooling applications such as die blocks, forming tools, and fixture components. The 36-inch length allows multiple blanks to be cut from a single bar, reducing material waste in higher-volume tooling projects. A licensed machinist or toolmaker typically sources and machines this stock prior to heat treatment by a qualified heat treater.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable, controlled hardening response
• Large 2 x 4 inch cross-section supports heavy die block and tooling blank applications
• Tight thickness tolerance of plus or minus 0.001 inches for precision fitment
• Width tolerance of plus 0.005 to minus 0.000 inches ensures stock is never undersized
• Length tolerance of plus 0.5 inches provides extra material for facing and squaring
• Squareness held to 0.003 inches on edges and 0.004 inches per inch of thickness on ends

Compatibility

Designed as a general-purpose O1 oil-hardening flat stock for use in tool and die fabrication, gauging, punches, and precision tooling applications requiring AISI Type O1 material specification.

Installation Notes

Machining of O1 tool steel flat stock is typically performed by qualified machinists or toolmakers using conventional milling, grinding, and turning equipment. Material should be rough-machined to near-final dimensions before hardening, then finish-ground after heat treatment to achieve final tolerances. Oil hardening should be performed by a certified heat treater following AISI O1 heat treatment guidelines. Always allow stock to reach a stable temperature before machining to avoid dimensional inconsistency.