Starrett 54482 O1 Tool Steel Flat Stock 3/4x3x36 in

Product Description

The STARRETT 54482 is an O1 oil-hardening tool steel flat stock bar measuring 0.75 inches thick, 3 inches wide, and 36 inches long. Manufactured to AISI Type O1 material specification, this flat stock is produced from tool steel known for its excellent machinability in the annealed state and its ability to achieve high hardness after oil-quench heat treatment. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for toolroom applications where dimensional precision matters before and after heat treat. Machinists, tool and die makers, and metalworking tradespeople use this bar stock to fabricate punches, dies, gauges, and cutting tools.

O1 tool steel flat stock in this size range is commonly used in job shops, toolrooms, and manufacturing facilities for producing precision tooling components. The 0.75-inch thickness and 3-inch width provide enough cross-section for medium-duty tooling blanks that require grinding to final dimension. At 36 inches in length, the bar can be cut to yield multiple tool blanks from a single piece. This stock is supplied in the annealed condition, ready for machining prior to hardening.

Key Features

• AISI Type O1 oil-hardening tool steel — machines cleanly in annealed condition and responds well to oil-quench hardening
• Thickness tolerance of plus or minus 0.001 inches for precise dimensional control
• Width tolerance of 0.000 to minus 0.005 inches — stock runs at or slightly under nominal width
• Length tolerance of plus 0.015 inches, minus 0 — full-length bars with no undercut
• Squareness held to 0.003 inches per inch on all edges
• Supplied in annealed condition, ready for machining and subsequent heat treatment

Compatibility

Designed as a standard O1 oil-hardening tool steel flat stock blank suitable for toolroom fabrication of punches, dies, gauges, and similar precision components requiring oil-quench heat treatment.

Installation Notes

Cutting, grinding, and drilling of O1 tool steel flat stock should be performed by qualified machinists using appropriate metalworking equipment. Secure the workpiece firmly before any cutting operation. Heat treatment including hardening and tempering should follow established metallurgical procedures for AISI O1 tool steel and should be performed by qualified personnel familiar with oil-quench processes. Allow the bar to reach ambient temperature before taking final dimensional measurements.