Starrett 54269 O1 Tool Steel Flat Stock 1/16x6x36 in

Product Description

The STARRETT 54269 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die work, jig fabrication, and precision machining applications. Manufactured to AISI Type O1 material specification, this flat stock measures 1/16 inch thick, 6 inches wide, and 36 inches long. It holds a thickness tolerance of plus or minus 0.001 inches and a length tolerance of plus 0.015 inches, making it suitable for applications requiring tight dimensional control before heat treat. Machinists, tool and die makers, and industrial fabricators stock this material for blanks, wear plates, and custom tooling components.

This flat stock is used in job shops, maintenance departments, and toolrooms where O1 tool steel is the specified material. O1 is a widely used oil-hardening grade that machines well in the annealed state and responds predictably to heat treatment, making it a standard choice for punches, dies, gauges, and similar tooling. The 6-inch width and 36-inch length provide ample stock for cutting multiple blanks from a single bar. This item ships as a single piece with a minimum order quantity of one.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable heat treat response
• Thickness tolerance of plus or minus 0.001 inches for precise pre-machined fits
• Width tolerance of minus 0.000 to minus 0.005 inches
• Length tolerance of plus 0.015 inches
• Edge squareness held to 0.003 inches per inch on all edges
• Single-piece packaging with no minimum order beyond one unit

Compatibility

Designed as a standard AISI O1 oil-hardening tool steel flat bar suitable for general toolmaking, die making, and precision fabrication applications where O1 material specification is required.

Installation Notes

Cutting and machining of tool steel flat stock should be performed with appropriate metalworking equipment by qualified machinists or toolmakers. Always follow safe handling practices when working with tool steel bar stock, including the use of proper personal protective equipment. Heat treatment of O1 steel requires controlled atmosphere or salt bath equipment and should be performed by personnel familiar with oil-quenching procedures. Sharp edges may be present on cut stock — deburr before handling or fitting.