Starrett 54036 O1 Tool Steel Flat Stock 5/32x3x18 in

Product Description

The STARRETT 54036 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die work, jig fabrication, and precision machining applications. Manufactured from AISI Type O1 tool steel, this flat stock measures 5/32 inches thick, 3 inches wide, and 18 inches long. It holds a thickness tolerance of +/- 0.001 inches and a width tolerance of 0.000 to 0.005 inches, making it suitable for applications where dimensional accuracy before hardening is critical. Machinists and tool-and-die makers select O1 stock for its consistent pre-heat properties and predictable response to oil-quench hardening. The piece weighs approximately 2.39 pounds.

O1 oil-hardening flat stock is commonly used in tool and die shops, machine shops, and maintenance departments. Typical applications include punch blanks, die components, cutting tools, gauges, and fixtures where the stock will be machined to shape and then hardened. This bar is supplied in the annealed condition, ready for machining prior to heat treatment. Its 18-inch length accommodates most bench-scale tooling projects without requiring further cutting in many cases.

Key Features

• AISI Type O1 oil-hardening tool steel construction for consistent hardenability
• Thickness tolerance of +/- 0.001 inches for precise pre-machining fitment
• Width tolerance of 0.000 to 0.005 inches
• Length tolerance of +0.250 inches, 0.000 inches
• Edge squareness held to 0.003 inches per inch across all edges
• Supplied in annealed condition, ready for machining and subsequent oil-quench hardening

Compatibility

Designed as a general-purpose O1 oil-hardening tool steel flat bar suitable for toolmaking, die making, and precision fixture fabrication in machine shop and maintenance environments.

Installation Notes

Machining and heat treatment of tool steel stock should be performed by qualified machinists or toolmakers familiar with AISI O1 properties and oil-quench hardening procedures. Ensure all machining operations are completed before hardening, as post-hardening modification requires grinding. Follow applicable shop safety protocols when handling and heat-treating tool steel, including proper ventilation and use of appropriate quenching media.