Starrett 57238 O1 Tool Steel Flat Stock 1/8x14x36 in

Product Description

The STARRETT 57238 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, and precision machining applications. Manufactured to AISI Type O1 specification, this flat stock measures 0.125 inches thick, 14 inches wide, and 36 inches long and weighs 17.86 pounds. Thickness tolerance is held to +/- 0.001 inches, with a length tolerance of +0.015 inches and a width tolerance of 0.000 to 0.015 inches. Edge squareness is controlled to 0.003 inches per inch. This material is supplied in the annealed condition and is intended for machining to final shape before oil-quench hardening by qualified tool and die makers or machinists.

O1 tool steel flat stock in this size range is commonly used in the fabrication of cutting tools, punches, dies, gauges, and fixture components in industrial and job-shop environments. The 14-inch width and 36-inch length make this bar suitable for larger blanks where wide-format tooling stock is required. Machinists and tool and die professionals select O1 for its predictable oil-hardening response, good machinability in the annealed state, and dimensional stability after heat treatment. This stock is appropriate for both prototype and production tooling applications.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable heat treatment response
• Thickness held to +/- 0.001 inches for precise stock removal planning
• Edge squareness controlled to 0.003 inches per inch on all edges
• Wide 14-inch by 36-inch format suitable for large-blank tooling applications
• Supplied annealed for ease of machining prior to hardening
• Length tolerance of +0.015 inches and width tolerance of 0.000 to 0.015 inches

Compatibility

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

Installation Notes

Machining and hardening of O1 tool steel should be performed by qualified machinists or tool and die makers with appropriate equipment. All grinding, milling, and drilling should be completed in the annealed state prior to heat treatment. Oil quenching and tempering operations must follow established metallurgical procedures for AISI O1 and should comply with applicable shop safety standards. Wear appropriate PPE when handling and machining tool steel stock.