Starrett 54337 O1 Tool Steel Flat Stock 5/32x8x36 in

Product Description

The STARRETT 54337 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, jig fabrication, and precision machining applications. Manufactured to AISI Type O1 specification, this flat stock measures 5/32 inch thick, 8 inches wide, and 36 inches long, and weighs 12.75 pounds. Thickness tolerance is held to +/- 0.001 inches, making it suitable for applications where close dimensional control is required before heat treatment. Machinists and tool and die makers rely on O1 stock for its consistent pre-hardened flatness and predictable response to oil-quench hardening.

This flat stock is used in machine shops, tool rooms, and maintenance departments for fabricating punches, dies, cutting tools, gauges, and general-purpose tooling. Its 8-inch width and 36-inch length provide a substantial working blank suitable for larger die plates, wear plates, or precision fixtures. The stock is supplied in the annealed condition, ready for machining prior to heat treatment. Width tolerance is held from 0.000 to 0.005 inches under nominal. Length tolerance is +0.015 inches. Squareness is maintained to 0.003 inches per inch on all edges.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable hardening response
• Thickness: 5/32 inch with +/- 0.001 inch tolerance
• Width: 8 inches, tolerance 0.000 to -0.005 inches
• Length: 36 inches, tolerance +0.015 inches
• Squareness held to 0.003 inches per inch on all edges
• Supplied annealed for full machinability prior to heat treat

Compatibility

Designed as a standard AISI O1 oil-hardening flat stock blank suitable for general toolmaking, die fabrication, and precision fixture applications requiring close-tolerance pre-hardened tool steel.

Installation Notes

O1 tool steel flat stock is worked by machinists and tool and die makers using conventional milling, grinding, and drilling equipment. Parts should be machined to near-final dimensions before oil-quench hardening, then finish-ground after heat treatment to meet final tolerances. Follow established heat treatment procedures for AISI O1 tool steel, including proper preheat and quench practices, to minimize warpage and cracking. Allow stock to reach uniform temperature before quenching.