Starrett 53934 O1 Tool Steel Flat Stock 1/32x3/4x18 in

Product Description

The STARRETT 53934 is an O1 oil-hardening tool steel flat stock bar intended for use in toolmaking, die making, jig fabrication, and precision machining applications. Manufactured to AISI Type O1 specification, this flat stock measures 1/32 inch thick, 3/4 inch wide, and 18 inches long, with a thickness tolerance of plus or minus 0.001 inches. O1 tool steel is a general-purpose oil-hardening grade known for good dimensional stability during heat treatment and moderate wear resistance. Machinists, tool and die makers, and precision fabricators use this material as raw stock for cutting tools, punches, gauges, and fixtures.

This flat stock suits applications in machine shops, tool rooms, and fabrication shops where tight dimensional tolerances and consistent material properties are required in the annealed condition. The 18-inch length provides enough stock for multiple short-run parts or a single longer component. The 1/32-inch thickness makes it well suited for thin shims, blades, or liner stock requiring precision ground dimensions prior to heat treatment. Width tolerance is held to 0.000 to negative 0.005 inches, and length tolerance is a positive 0.250 inches, accommodating standard saw-cut finishing.

Key Features

• AISI Type O1 oil-hardening tool steel for stable, predictable hardening response
• Thickness tolerance of plus or minus 0.001 inches for tight fit-up applications
• Width tolerance of 0.000 to negative 0.005 inches
• Length tolerance of positive 0.250 inches suitable for standard cut-to-length stock
• Edge squareness held to 0.003 inches per inch across all edges
• Supplied in annealed condition, ready for machining before oil-quench hardening

Compatibility

Designed as a general-purpose O1 tool steel flat bar for use in tool rooms, die shops, and precision fabrication environments requiring AISI Type O1 oil-hardening material in flat stock form.

Installation Notes

Machining and finishing of O1 tool steel flat stock should be performed by qualified machinists or tool and die makers using appropriate cutting tools and coolant. Heat treatment, including hardening and tempering, requires controlled oven equipment and oil-quench facilities and should follow standard AISI O1 heat treat procedures. Always wear appropriate personal protective equipment when cutting, grinding, or heat treating tool steel. Follow applicable shop safety codes and procedures when handling hardened or sharp-edged stock.