Starrett 54347 O1 Tool Steel Flat Stock 3/16x3-1/2x36 in

Product Description

The STARRETT 54347 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die making, and precision machining applications. Manufactured to AISI Type O1 specifications, this flat stock measures 3/16 inches thick, 3-1/2 inches wide, and 36 inches long, with a weight of 6.69 pounds. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for applications where dimensional accuracy is critical before and after heat treatment. Machinists, tool and die makers, and metalworking professionals select O1 flat stock for its consistent pre-hardened geometry and predictable response to oil-quench hardening.

O1 tool steel flat stock is a standard material in job shops, toolrooms, and industrial maintenance facilities. It is used to fabricate punches, dies, gauges, blades, and custom tooling. This 36-inch length allows for sectioning into multiple workpiece blanks. The 3/16-inch thickness is well suited to thin die plates, cutting blades, and precision fixtures where stock removal during grinding must be controlled tightly.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable heat-treat response
• Thickness: 3/16 inches with plus or minus 0.001-inch tolerance
• Width: 3-1/2 inches with tolerance of minus 0.000 to minus 0.005 inches
• Length: 36 inches with plus 0.015-inch length tolerance
• Edge squareness held to 0.003 inches per inch on all edges
• Weighs 6.69 pounds per bar

Compatibility

Designed as a standard O1 oil-hardening tool steel flat bar for general toolroom and die-making use. Compatible with conventional oil-quench hardening processes per AISI Type O1 material specifications.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists or tool and die makers using appropriate metalworking equipment. Ensure all cutting and grinding tools are rated for tool steel hardness. Heat treatment, including oil quenching, should follow established shop procedures and applicable safety protocols for handling heated metal and quench oils. Always wear appropriate PPE when cutting or heat-treating tool steel stock.