Starrett 54462 O1 Tool Steel Flat Stock 5/8x3/4x36in

Product Description

The STARRETT 54462 is an O1 oil-hardening tool steel flat stock bar used in tool and die making, jig construction, punch fabrication, and precision machining applications. Manufactured to AISI Type O1 specifications, this flat stock measures 5/8 inches thick, 3/4 inches wide, and 36 inches long with a finished weight of 4.78 pounds. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for applications where tight dimensional control is required before or after heat treatment. Licensed machinists, toolmakers, and metalworking shops are the primary users of this material.

O1 tool steel flat stock in this size range is commonly stocked in tool rooms and machine shops for fabricating custom cutting tools, form punches, fixtures, and gauges. The 36-inch bar length allows for multiple part blanks to be cut from a single piece, reducing material waste. This stock is supplied in the annealed condition and is intended for machining to near-final dimensions prior to oil quench hardening and tempering. Edge squareness and tight thickness tolerances reduce the amount of stock removal required during setup.

Key Features

• AISI Type O1 oil-hardening tool steel construction for predictable heat-treat response
• Thickness tolerance of plus or minus 0.001 inches for precision pre-heat-treat fitment
• Width tolerance of 0.000 to minus 0.005 inches for controlled interference fits
• Length tolerance of plus 0.015 inches, minus 0 inches for consistent blank cutting
• Edge squareness held to 0.003 inches per inch on all edges
• Supplied in annealed condition, ready for machining and subsequent hardening

Compatibility

Designed as a standard O1 oil-hardening flat stock bar suitable for general tool room, die shop, and precision metalworking applications requiring AISI Type O1 tool steel in this size.

Installation Notes

Cutting and machining of O1 tool steel flat stock should be performed by qualified machinists or toolmakers using appropriate carbide or high-speed tooling. All heat treatment operations, including oil quench hardening and tempering, must be carried out per established metallurgical procedures and applicable shop safety standards. Secure workpieces firmly during sawing or milling operations to prevent movement. Allow material to reach ambient temperature before taking final dimensional measurements after any thermal operation.