Starrett 54524 O1 Tool Steel Flat Stock 1-1/4x4x36 in

Product Description

The STARRETT 54524 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, jig fabrication, and precision machining applications. Manufactured from AISI Type O1 tool steel, this flat stock measures 1-1/4 inches thick, 4 inches wide, and 36 inches long and weighs 51 pounds. O1 is a general-purpose oil-hardening tool steel known for its good machinability in the annealed state and its ability to hold a sharp edge after heat treatment. Machinists, tool and die makers, and industrial fabricators work with this material to produce punches, dies, gauges, and custom tooling components requiring tight dimensional control.

This flat stock is suited for shop floor and toolroom environments where close-tolerance raw material stock is required before hardening and finishing. The 36-inch length provides sufficient stock for multiple tooling blanks. The 1-1/4-inch thickness and 4-inch width accommodate a wide range of die and punch profiles. It is appropriate for both light production toolrooms and prototype or job-shop environments. Machinists typically rough-machine this stock in its annealed state before oil quenching to achieve the desired hardness.

Key Features

• AISI Type O1 oil-hardening tool steel for reliable heat-treat response
• Thickness tolerance of plus or minus 0.001 inches for consistent stock removal calculations
• Width tolerance of 0.000 to minus 0.005 inches for predictable fit in fixtures
• Length tolerance of plus 0.015 inches, minus 0 inches
• Edge squareness of 0.003 inches per inch on all edges
• Single-piece packaging with no minimum order quantity above one piece

Compatibility

Designed as a standard raw material flat stock for toolmaking, die making, and precision machining applications requiring AISI Type O1 oil-hardening tool steel in a 1-1/4 by 4 by 36 inch form factor.

Installation Notes

This is raw annealed tool steel stock intended for machining prior to heat treatment. Handle with appropriate lifting equipment given the 51-pound weight. Machine in the annealed state using conventional milling, drilling, or grinding equipment before oil quenching. Consult the material data sheet and applicable shop safety procedures for heat-treating O1 tool steel, including proper quench oil temperature and post-quench tempering requirements.