Starrett 54505 O1 Tool Steel Flat Stock 1x3x36 in

Product Description

The STARRETT 54505 is an O1 oil-hardening tool steel flat stock bar measuring 1 inch thick, 3 inches wide, and 36 inches long. O1 tool steel is a general-purpose cold-work steel that responds well to oil quenching, making it a standard choice for dies, punches, gauges, and precision tooling components. This flat stock is supplied in the annealed condition, ready for machining and subsequent heat treatment. Thickness tolerance is held to plus or minus 0.001 inches, and squareness is controlled to 0.003 inches per inch on all edges, reflecting the tight dimensional standards required by toolmakers and precision machinists.

This flat stock is used in tool-and-die shops, machine shops, and maintenance departments for fabricating cutting tools, jigs, fixtures, and wear components. The 36-inch length provides ample stock for multiple part blanks from a single bar. It is suited to both production tooling applications and one-off precision parts where consistent hardening response is required. Machinists, tool and die makers, and industrial maintenance technicians are the typical end users for this material.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable, controllable heat treatment response
• Thickness tolerance of plus or minus 0.001 inches for high-precision blank stock
• Length tolerance of plus 0.015 inches, zero minus, providing full usable length
• Width tolerance of 0.000 to minus 0.005 inches for consistent fit in close-tolerance applications
• Squareness held to 0.003 inches per inch on all edges
• 36-inch bar length yields multiple blanks per piece, reducing material waste

Compatibility

Designed as a standard O1 oil-hardening tool steel flat bar suitable for general toolmaking, die work, and precision machining applications requiring AISI Type O1 material specification.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed with appropriate coolant to maintain dimensional accuracy and avoid surface hardening from heat buildup. Heat treatment of O1 steel requires controlled furnace conditions and oil quench media; follow the material manufacturer guidelines and applicable shop safety practices. Personal protective equipment including eye protection and heat-resistant gloves is required during all cutting and heat-treat operations. Consult applicable OSHA and shop safety codes before processing.